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rf/if vector multiplier adl5390 rev. 0 in fo rmation furn is h e d by an al o g dev i ces is believed to be a ccu rate and r e liable. how e ver, no r e spons i bili ty is assumed by analog devices fo r its use, nor f o r an y i n fri n geme nt s of p a t e nt s or ot her ri g h t s o f th ird parties th at may result fro m its use . specifications subject to chan g e witho u t n o tice. no licen s e is g r an te d by implicati o n or ot he rwi s e un der a n y p a t e nt or p a t e nt r i ghts of anal og de vices. trad emarks an d registered tra d ema r ks are the prop erty o f their respective ow ners. one technolog y way, p.o . box 9106, norwood, ma 02062-9106, u.s.a. t e l: 781. 329. 4 700 www.analog.com fax: 781. 326. 87 03 ? 2004 analog de vices, i n c. al l r i ght s r e ser v ed . features matched pair of multipl y ing vgas broad frequen c y range 20 m hz to 2.4 gh z co ntinuo us ma gnitude c o ntro l fro m +5 db to ?30 db output third-o r der intercept 24 dbm output 1 db co mpression poi n t 11 dbm output noise fl oor ?148 dbm/hz adjustable mo dulatio n band width up to 23 0 mhz fast output power disable single-supply voltage 4.75 v to 5.25 v applic ati o ns pa linear izatio n and predisto r tion amplitud e and phase modula tion variable m a tched atten u ator and/or phase shifter cellu lar base st ations radio links fixed wirele ss access b r o a dband/catv rf/if analog multiplexer func tio n a l block di agram vps2 obbm qbbp inpi inmi dsop ibbm ibbp rfop rfom 04954-001 vprf cmop inmq inpq cmrf fi g u r e 1 . gener a l description the ad l5390 vec t o r m u l t i p lier co n s is ts o f a ma t c h e d p a ir o f b r o a db a n d v a r i abl e g a i n am pl i f i e rs w h o s e out p ut s are su m m e d . t h e sep a ra t e ga in co n t r o ls f o r eac h a m p l if ier a r e lin e a r -in- ma g n i t u d e . i f t h e tw o i n p u t rf sig n als a r e in qu adra t u r e , t h e ve c t or m u lt ipl i e r c a n b e c o n f i g u r e d a s a ve c t or mo d u l a tor or a s a va r i a b le a t t e n u a t o r /pha s e shif t e r b y usin g t h e ga in co n t r o l p i ns as c a r t esian va r i a b les . i n this cas e , t h e o u t p u t am p l i t ude can b e co n t r o l l ed f r o m a maxim u m o f +5 db t o les s tha n C30 db , and th e p h as e can b e s h if t e d con t in uo us l y o v er th e en tir e 360 r a n g e . s i n c e th e s i gn a l pa t h s a r e l i n e a r , th e o r i g i n a l m o d u l a ti o n o n t h e i n p u t s is p r es er v e d . i f t h e tw o sig n als a r e i n de p e n d e n t , t h e n t h e v e c t o r m u l t i p li er ca n f u n c t i on as a 2:1 m u l t i p lexer o r c a n prov i d e f a d i ng f r om one ch an n e l to a n ot he r . the ad l5390 op era t es o v er a wide f r eq uen c y ra n g e o f 20 mh z t o 2400 mh z. f o r a maxim u m ga in s e t t in g on o n e c h a n n e l a t 380 m h z, t h e ad l53 90 de l i v e rs an op1 d b o f 1 1 dbm, a n o i p 3 o f 24 db m, an d a n o u t p u t n o is e f l o o r o f ?148 db m/h z . th e ga in a nd phas e ma t c hin g b e tw e e n t h e tw o v g a s is b e t t er t h a n 0 . 5 d b and 1 , r e s p e c t i ve ly , o ver m o st o f t h e op e r a t ing ran g e. the ga in co n t r o l in p u ts a r e dc-c o u p l ed wi t h a + / ?500 mv dif - f e r e n t ial f u l l -s c a le ra n g e cen t ered abo u t a 500 mv co mm on m o de . the max i m u m m o d u l a tio n ban d wid t h is 230 mh z, w h ich can b e r e d u ce d b y ad d i ng ex ter n a l ca p a c i to rs to lim i t t h e noi s e b a nd w i d t h on t h e c o n t ro l l i ne s . b o t h t h e rf in pu ts an d o u t p uts ca n b e us e d dif f er en t i al l y o r sin g le-e nde d a nd m u st b e ac-cou ple d . t h e im p e dan c e o f e a ch v g a rf in p u t is 250 ? t o g r o u nd , an d t h e dif f er en t i al o u t p u t im p e dan c e is no minal l y 50 ? o v er t h e op era t i n g f r e q uen c y ra n g e . th e dsop p i n al lo ws t h e o u t p u t s t a g e t o b e dis a b l e d q u i c kl y t o p r o t ect s u bseq uen t s t a g e s f r o m o v e r dri v e . th e ad l5390 o p era t es o f f s u p p l y v o l t a g es f r o m 4.75 v t o 5.25 v while co ns uming 135 ma. the ad l5390 is fa b r ic a t e d o n analog de vices p r o p r i eta r y , hig h p e r f o r ma nce 25 gh z so i co m p le m e n t a r y b i p o la r i c p r o c es s. i t is a v ai la b l e in a 24-le ad , pb -f r e e cs p p a cka g e and o p era t es o v er a ?40 c t o +85 c t e m p era t ur e r a n g e . e v al ua t i o n b o ard s are a v a i l a bl e.
adl5390 rev. 0 | page 2 of 24 table of contents specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 5 esd caution .................................................................................. 5 pin configuration and function descriptions ............................. 6 typical performance characteristics ............................................. 7 general structure ........................................................................... 11 theory of operation .................................................................. 11 noise and distortion .................................................................. 11 applications ..................................................................................... 12 using the adl5390 .................................................................... 12 rf input and matching .............................................................. 12 rf output and matching .......................................................... 13 driving the i-q baseband gain controls ............................... 13 interfacing to high speed dacs .............................................. 14 generalized modulator ............................................................. 15 ve c tor mo du l ator ....................................................................... 15 vector modulator examplecdma2000 ............................. 15 quadrature modulator .............................................................. 17 rf multiplexer ............................................................................ 18 evaluation board ............................................................................ 19 outline dimensions ....................................................................... 23 ordering guide .......................................................................... 23 revision history 10/04revision 0: initial version
adl5390 rev. 0 | page 3 of 24 specifications v s = 5 v, t a = 25c, z o = 50 ? , f rf = 380 mhz, single-ended source drive to inpi a nd inpq, and inmi and inmq are ac-coupled to common, unless otherwise noted. 66.5 ? termination resistors before ac-coupling capacitors on inpi and inpq. the specifications refer to one active channel with the other channel input terminated in 50 ? . the common-mode level for the gain control inputs is 0.5 v. a maximum gain setpoint of 1.0 refers to a differential gain control voltage of 0.5 v. table 1. parameter conditions min typ max unit overall function frequency range 20 2400 mhz gain control range relative to maximum gain 35 db gain control interface (i and q) qbbp, qbbm , ibbm, ibbp (pins 4, 5, 14, 15) gain scaling 3.5 1/v modulation bandwidth 500 mv p-p, sinusoidal baseband input single- ended 230 mhz second harmonic distortion 500 mv p-p, 1 mhz, sinusoidal baseband input differential 45 dbc third harmonic distortion 500 mv p-p, 1 mhz, sinusoidal baseband input differential 55 dbc step response for gain from ?15 db to +5 db 45 ns for gain from +5 db to ?15 db 47 ns f rf = 70 mhz maximum gain maximum gain setpoint 4.6 db gain conformance over gain set point of 0.2 to 1.0 0.25 db output noise floor maximum gain setpoi nt, no rf input ?149 dbm/hz rf p in = ?5 dbm, frequency offset = 20 mhz ?146 dbm/hz output ip3 f rf1 = 70 mhz, f rf2 = 72.5 mhz, maximum gain setpoint 23 dbm output 1 db compression point max imum gain setpoint 10.7 dbm input 1 db compression point gain setpoint = 0.1 6.7 dbm gain flatness over any 60 mhz bandwidth 0.25 db gain matching at maximum gain setpoint 0.5 db phase matching at maximum gain setpoint 0.25 degrees input impedance inpi, inmi, inmq, inmp (pins 20, 21, 22, 23) 250||1 ohms ||pf output return loss rfop, rfom (pins 9, 10) measured through balun 9.7 db f rf = 140 mhz maximum gain maximum gain setpoint 4.5 db gain conformance over gain set point of 0.2 to 1.0 0.25 db output noise floor maximum gain setpoi nt, no rf input ?144 dbm/hz rf p in = ?5 dbm, frequency offset = 20 mhz ?145 dbm/hz output ip3 f rf1 = 140 mhz, f rf2 = 142.5 mhz, maximum gain setpoint 24.4 dbm output 1 db compression point ma ximum gain setpoint 11 dbm input 1 db compression point gain setpoint = 0.1 7.1 dbm gain flatness over any 60 mhz bandwidth 0.25 db gain matching at maximum gain setpoint 0.5 db phase matching at maximum gain setpoint 0.25 degrees input impedance inpi, inmi, inmq, inmp (pins 20, 21, 22, 23) 250||1 ohms ||pf output return loss rfop, rfom (pins 9, 10) measured through balun 9.6 db f rf = 380 mhz maximum gain maximum gain setpoint 4.1 db gain conformance over gain set point of 0.2 to 1.0 0.25 db
adl5390 rev. 0 | page 4 of 24 parameter conditions min typ max unit output noise floor maximum gain setpoi nt, no rf input ?147.5 dbm/hz rf p in = ?5 dbm, frequency offset = 20 mhz ?146 dbm/hz output ip3 f rf1 = 380 mhz, f rf2 = 382.5 mhz, maximum gain setpoint 24.2 dbm output 1 db compression point max imum gain setpoint 11.3 dbm input 1 db compression point gain setpoint = 0.1 8.3 dbm gain flatness over any 60 mhz bandwidth 0.25 db gain matching at maximum gain setpoint 0.5 db phase matching at maximum gain setpoint 0.5 degrees input impedance inpi, inmi, inmq, inmp (pins 20, 21, 22, 23) 200||1 ohms ||pf output return loss rfop, rfom (pins 9, 10) measured through balun 8.5 db f rf = 900 mhz maximum gain maximum gain setpoint 4.5 db gain conformance over gain set point of 0.2 to 1.0 0.4 db output noise floor maximum gain setpoi nt, no rf input ?149.5 dbm/hz rf p in = ?5 dbm, frequency offset = 20 mhz ?148 dbm/hz output ip3 f rf1 = 900 mhz, f rf2 = 902.5 mhz, maximum gain setpoint 23.3 dbm output 1 db compression point max imum gain setpoint 11.5 dbm input 1 db compression point gain setpoint = 0.1 8.5 dbm gain flatness over any 60 mhz bandwidth 0.25 db gain matching at maximum gain setpoint 0.6 db phase matching at maximum gain setpoint 1 degrees input impedance inpi, inmi, inmq, inmp (pins 20, 21, 22, 23) 180||0.6 ohms ||pf output return loss rfop, rfom (pins 9, 10) measured through balun 6.8 db f rf = 2400 mhz maximum gain maximum gain setpoint 7.0 db gain conformance over gain set point of 0.2 to 1.0 0.5 db output noise floor maximum gain setpoi nt, no rf input ?147 dbm/hz rf p in = ?5 dbm, frequency offset = 20 mhz ?144 dbm/hz output ip3 f rf1 = 2400 mhz, f rf2 = 2402.5 mhz, maximum gain setpoint 18.7 dbm output 1 db compression point max imum gain setpoint 9.6 dbm input 1 db compression point gain setpoint = 0.1 4.3 dbm gain flatness over any 60 mhz bandwidth 0.25 db gain matching at maximum gain setpoint 0.8 db phase matching at maximum gain setpoint 2.5 degrees input impedance inpi, inmi, inmq, inmp (pins 20, 21, 22, 23) 140||0.5 ohms ||pf output return loss rfop, rfom (pins 9, 10) measured through balun 13.5 db power supply vprf, vps2 (pin 1, 18, 6); rfop, rfom (pins 9, 10) positive supply voltage 4.75 5 5.25 v total supply current includes load current 135 ma output disable dsop (pin 13) disable threshold 2.5 v maximum attenuation dsop = 5 v 40 db enable response time delay following high-to-low transition until device meets full specifications 15 ns disable response time delay following low-to-high transition until device produces full attenuation 10 ns
adl5390 rev. 0 | page 5 of 2 4 absolute maximum ratings table 2. p a r a m e t e r s r a t i n g supply voltage vprf, vps 2 5.5 v dsop 5.5 v ibbp, ibbm, qbb p , qbbm 2.5 v rfop, rfom 5.5 v rf input power at maximum gain 10 dbm for 50 ? (inpi or inpq, si ngle-ended drive) equivalent volta g e 2.0 v p-p internal power dissipation 825 mw ja (with pad so l d ered to board) 59c/ w maximum junction temperature 125c operating temperature range ?40c to +85c storage temperature range ?65c to +150c s t r e s s es a b o v e t h os e list e d u nde r a b s o l u te m a xim u m r a t i n g s ma y ca us e p e r m a n e n t dama ge to t h e de vi ce. t h is is a st r e ss r a t i ng on ly f u n c t i on a l op e r at i o n of t h e d e v i c e a t t h e s e or an y o t h e r con d i t ions a b o v e t h o s e i ndic a te d i n t h e op er a t io na l s e c - t i o n o f t h is sp e c if ica t ion is n o t i m plie d . e x p o sur e t o a b s o l u t e max i m u m r a t i ng co ndi t i on s fo r ex tende d p e r i o d s ma y a f fe c t de vice rel i a b i l i t y . esd caution esd (electrostatic discharge) sensitive device. ele c trosta tic charg e s as high as 4000 v readily accumulate on the human body and test eq uipment and can discharge with out detection. although this product features proprietary esd protection circu i try, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. theref ore, prop er esd precautions a r e recommended to avoid perform a nce degradation or l o ss of functiona l ity.
adl5390 rev. 0 | page 6 of 2 4 pin conf iguration and fu nction descriptions 24 1 2 3 4 5 6 18 17 16 15 14 13 23 22 21 20 19 7 8 9 1 01 11 2 top view (not to scale) adl5390 vprf qflp qflm qbbp qbbm vps2 vprf iflp iflm ibbp ibbm dsop 04954-002 cmrf inpq inmq inmi inpi cmrf cmop cmop rfop rfom cmop cmop f i g u re 2. lfcs p pin conf ig ur at i o n ta ble 3. pi n f u nct i on d e s c ri pt i o ns pin o. neonic description 2, 3 qflp, qflm q base b and inp ut filter pins. connect option a l c a pacito r to red u ce q base band gain control c h a nnel l o w- pass c o rner frequency. 4, 5 qbbp, qb bm q channe l differential ba seba n d gain control inputs. t y pical c o mmon-m o de bias le vel of 0.5 v. 6, 1, 18 vps2, vp rf positive supply voltage. v p of 4. 75 v to 5.25 v. 7, 8, 11, 12, 19, 24 cmop, cmrf device common. connect via lowest possible impedance to external circuit common. 9, 10 rfop, rfom differential rf outputs. m u st be ac -coupled. differential impedance 50 ? nomin al. 13 dsop output disable. pull high to disable outp ut stage. connect to co mmon for norm al oper a tion. 14, 15 ibbm, ibbp i channel differ e ntial ba seba nd gain co ntrol in puts. t y pical co mmon-mod e bi as leve l of 0.5 v. 16, 17 iflm, iflp i baseba n d input filter pins. con n ec t optiona l ca pacitor to reduce i baseba nd gain control ch ann e l low - pass c o rner frequency. 20, 21 inpi, inmi i channel differ e ntial rf inputs. must be ac-coupled. 250 ? impedance to com m on on ea ch pi n. these inputs can be dr iven singl e -end ed without any performance degradation. 22, 23 inmq, inpq q channe l differential rf inputs. must be ac-coupled. 250 ? impedance to com m on on ea ch pi n. these inputs can be dr iven singl e -end ed without any performance degradation. exposed paddl e gnd the exposed pa ddle on the underside of the pa ckage sh ould be sold ered to a lo w thermal and e l ectrical impedance gro u nd plane.
adl5390 rev. 0 | page 7 of 2 4 typical perf orm ance cha r acte ristics 10 5 0 ?5 ?10 ?15 ?20 ?25 ?30 0.25 0 0.50 0.75 1.00 gain (db) gain setpoint 04954-003 f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz f i g u re 3. g a in m a g n it ude v s . g a in s e t p oint , r f f r equenc y = 7 0 m h z, 14 0 m h z, 38 0 m h z, 90 0 m h z, 2 4 0 0 m h z (chan n el i or c h a nnel q) 10 5 0 ?5 ?1 0 ?1 5 ?2 0 ?2 5 ?3 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 gain ( d b) gain setpoint temp = ? 40c temp = +25 c temp = +85 c 04954-004 f i g u re 4. g a in m a g n it ude v s . g a in s e t p oint , t e mp = + 8 5 c, +2 5c , ? 4 0 c, rf f r equ e nc y = 380 mh z ( c h a nne l i or channe l q) 0 0.25 0.50 0.75 1.0 4 3 2 1 0 ?1 ?2 ?3 ?4 gain e rror (db) gain setpoint f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz 04954-005 +3 = dash line ?3 = solid line f i gure 5. g a in c o nf or manc e er ror vs. g a in s e tpoint, rf f r equ e nc y = 70 mh z , 14 0 m h z, 38 0 m h z, 90 0 m h z, 2 4 0 0 m h z 5 4 3 2 1 0 ?1 ?2 ?3 ?4 ?5 0 300 600 900 1200 1500 1800 2100 2400 channe l gai n match (db) frequency (mhz) +3 ?3 04954-006 f i gure 6. ch ann e l g a in matchi ng (i to q) v s . rf f r equ e nc y , ga i n se t p o i n t = 1 . 0 0 300 600 900 1200 1500 1800 2100 2400 9 8 7 6 5 4 3 2 1 0 gain ( d b) frequency (mhz) temp = +85 c temp = +25c temp = ? 40c 04954-007 f i gure 7. ch ann e l g a in vs . rf f r equ e nc y , t e mp = +85c, +25c, ?40c, ga i n se t p o i n t = 1 . 0 0 0.25 0.50 0.75 1.0 5 0 ?5 ?10 ?15 ?20 ph a se er r o r ( d egrees) gain setpoint 04954-008 f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz +3 = dash line ?3 = solid line f i gure 8. s i ngle - c h a nne l p h ase d e v i at io n vs. g a in s e tpoint, normaliz ed to g a in s e tpoi nt = 1. 0 , rf f r equenc y = 70 mh z, 1 4 0 mh z , 3 8 0 mh z, 90 0 m h z, 24 0 0 m h z
adl5390 rev. 0 | page 8 of 2 4 25 20 15 10 5 0 ?5 ?10 ?15 ?20 0 0.2 0.4 0.6 0.8 1.0 ph a se d i ffer r e n c e ( d egrees) gain setpoint 04954-009 f rf = 7 0mhz f rf =1 4 0 m h z f rf =3 8 0 m h z f rf = 9 0 0 mhz f rf = 2 400 m h z +3 = dash line ?3 = solid line f i gure 9. ch ann e l-to - c hann el phase match i ng vs. g a in s e tp oint, rf f r e q ue nc y = 70 mhz , 1 4 0 m h z , 38 0 mhz , 90 0 mhz, 240 0 m h z 10 8 6 4 2 0 ?2 ?4 ?6 ?8 ?1 0 ph a se d i ffer e n c e ( d egrees) 0 600 1200 1800 2400 frequency (mhz) temp = ? 4 0 c temp = +25 c temp = +85 c 04954-010 +3 = dash line ?3 = solid line f i gure 10. channe l-to - c hann el phase match i ng vs. rf f r e q uenc y , t e mp = +8 5c, +2 5c , ? 4 0 c, g a in s e t p o i nt = 1.0 ? 142 ? 143 ? 144 ? 145 ? 146 ? 147 ? 148 ? 149 ? 150 ? 151 ? 152 nois e (dbm/hz) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 gain setpoint 04954-011 f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz f i gure 11. o u tput nois e f l oo r v s . g a i n s e tpoint, no r f carr ie r , rf f r e q ue nc y = 70 mhz , 1 4 0 m h z , 38 0 mhz , 90 0 mhz, 240 0 m h z no carrier p in =? 1 5 d b m p in =? 1 0 d b m p in = ?5db m ? 142 ? 143 ? 144 ? 145 ? 146 ? 147 ? 148 ? 149 ? 150 ? 151 ? 152 nois e (dbm/hz) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 gain setpoint 04954-012 f i gure 12. o u tput nois e f l oo r v s . g a i n s e tpoint, no ca rr ie r , w i th ca rr ie r (20 m h z o ffset), rf p in = ? 5 , ?1 0, ?1 5, no carr ie r , r f f r eq uenc y = 3 8 0 mh z 04954-013 ?142 ?143 ?144 ?145 ?146 ?147 ?148 ?149 ?150 ?151 ?152 nois e (dbm/hz) 0 400 800 1200 1600 2000 2400 gain setpoint = 1.0 frequency (mhz) f i g u re 13. o u t p ut nois e f l oo r v s . r f f r equ e nc y , g a in s e t p oint = 1.0 , no r f carr ie r ?2 0 ?1 5 ?1 0 ?5 0 5 10 0 4 00 8 0 0 1 20 0 1 60 0 2 00 0 2 4 0 0 frequency ( m hz) gain ( d b) 04954-014 gain setpoint = 1.0 gain setpoint = 0.5 gain setpoint = 0.1 f i g u re 14. g a in v s . r f f r equ e nc y , g a in s e t p oint = 1.0, 0. 5, 0.1
adl5390 rev. 0 | page 9 of 2 4 0 ?1 0 ?2 0 ?3 0 ?4 0 ?5 0 ?6 0 ?7 0 ?8 0 ?9 0 ?100 0 100 200 300 400 500 600 700 800 900 1000 rf outp ut s i de band p o w e r (dbm) fundamental 2nd harmonic 3rd harmonic diff. baseband input level (mv p-p) 04954-015 f i g u re 15. bas e b a n d ha r m on ic d i s t o r t i on, (chan n e l i and chann e l q), rf p in = ? 5 db m, (b alun and cab l e l o sses not in clud ed) 0 400 800 1200 1600 2000 2400 12 11 10 9 8 7 6 frequency (mhz) op 1 d b (dbm) temp = ? 40 c temp = +25 c temp = +85 c 04954-016 f i gure 16. o u tput 1 db co mp r e ssi on p o int v s . rf f r eque n c y , t e mp = +8 5c , + 2 5 c, ? 4 0 c, g a i n s e tpoint = 1.0 0 400 800 1200 1600 2000 2400 30 28 26 24 22 20 18 16 14 12 10 temp = ? 40c temp = +25 c temp = +85 c frequency (mhz) oip3 ( d b m ) 04954-017 f i g u re 17. o u t p ut ip3 v s . r f f r equ e nc y , t e mp = + 8 5 c, +2 5c, ?4 0c , ga i n se t p o i n t = 1 . 0 0 5 0 100 150 200 250 300 350 400 0 ?5 ?10 ?15 ?20 ?25 ?30 ?35 1v p-p baseband input 500mv p-p baseband input 250mv p-p baseband input bb frequency (mhz) s i de band p o w e r (dbm) 04954-018 f i gure 18. iq m o du lation band width v s . baseband magn itude 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 15 10 5 0 ?5 ?10 ?15 ?20 ?25 gain setpoint op 1 d b (dbm) 04954-019 f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz f i gure 19. o u tput 1 db co mp r e ssi on v s . g a in s e tpo i nt, rf f r equ e nc y = 70 m h z, 1 4 0 m h z, 38 0 m h z, 90 0 m h z, 24 0 0 m h z 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 15 10 5 0 ?5 ?1 0 ?1 5 20 25 30 oip3 ( d bm) gain setpoint 04954-020 f rf = 70mhz f rf = 140mhz f rf = 380mhz f rf = 900mhz f rf = 2400mhz f i g u re 20. o u t p ut ip3 v s . g a in s e t p oin t , r f f r equ e nc y = 7 0 m h z, 14 0 m h z, 38 0 m h z, 90 0 m h z, 24 0 0 m h z
adl5390 rev. 0 | page 10 of 24 20 220 420 620 820 1020 1220 1420 1620 1820 2020 2220 300 250 200 150 100 50 f rf (mhz) inp u t s hunt re s i s t ance ( ? ) 04954-021 1.25 1.00 0.75 0.50 0.25 0 inp u t s hunt cap acitance (pf) shunt resistance ( ? ) shunt capacitance (pf) f i gure 2 1 . s11 o f rf input (sh u nt r / c r e pr es enta tio n ) |gridz| s 11termang i 0 1 04954- 022 0 180 30 330 60 adl5390 sdd22 90 270 arg( gridz ), rads(s 11 termang i ) 300 120 240 150 210 impedance circle sdd22 nom wfr dut 1 s22 nom wfr 10mhz 3ghz 2.7ghz 10mhz f i g u re 22. s2 2 of r f o u t p ut (d if f e r e ntial and sing le -end e d thr o u g h b a lun) 139 138 137 136 135 134 133 132 ?40 ? 25 ?10 5 20 35 50 65 80 s u p p l y curre nt (ma) temperature ( c) 04954-023 vp = 5.25 vp = 4.75 vp = 5 f i gure 23. sup p l y current v s . t e mper at ur e 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 ?5 ?10 ?15 ?20 ?25 ?30 ?35 ?40 ?45 ?50 ?55 ?60 ?65 ?70 ?75 dsop voltage (v) rf outp ut p o we r (dbm) 04954-024 f i gure 24. p o wer s h utd o wn attenu at ion, rf = 380 mh z tek run envelope 12 aug 04 16:48:01 ch1 500mv ? ch3 2.0v ? d s m 10.0ns 5.0gs/s et 200ps/pt a ch3 760mv 1 04954-025 f i gure 25. p o wer s h utd o wn response t i me , rf = 380 mh z
adl5390 rev. 0 | page 11 of 24 gene ral structure theory of operat ion the sim p lif i e d b l o c k dia g ra m g i v e n in f i gur e 2 6 s h o w s a ma tch e d p a ir o f va r i a b l e ga in cha nnels w h o s e o u t p uts a r e sum m e d and p r es en te d to t h e f i na l o u tp u t . t h e rf /if sig n a l s p r o p a g a t e f r o m t h e lef t t o t h e r i g h t, w h i l e t h e b a s e b a nd ga i n co n t r o ls a r e place d ab o v e and b e lo w . th e p r o p r i et a r y lin e a r - re sp on d i ng v a r i abl e atte n u a t or s of f e r e x c e l l e n t l i n e ar it y , l o w n o is e, an d g r e a ter imm u ni ty f r o m misma t ch es t h a n o t h e r co mm onl y us ed m e t h o d s. since t h e tw o i ndep e nden t rf /i f in p u ts can b e co m b i n e d i n a r b i tra r y p r o p o r ti o n s , th e o v e r all fun c ti o n ca n be t e rm ed v e c tor m u l t i p li ca t i on as exp r e s s e d b y v ou t = v irf ( v ibb / v o ) + v qr f ( v qb b / v o ) w h er e: v irf and v qr f a r e t h e rf/if i n pu t v e c t o r s. v ibb and v qb b a r e t h e b a s e b a nd i n p u t s c a l a r s. v o is t h e b u i l t-i n n o r m a l i z a t ion fac t o r , w h ich is desig n e d t o b e 0.285 v (1/3.5 v). the o v eral l v o l t a g e ga i n , i n li n e a r t e r m s, o f t h e i a nd q cha n n e l s i s prop or t i on a l to it s c o n t ro l vo lt age a n d s c a l e d b y t h e nor m a l i - za t i on fac t o r , i . e., a f u l l -s c a le ga in o f 1.75 (5 db) fo r v i (q)b b of 500 mv . a f u l l -s cale v o l t a g e ga in o f 1.75 def i n e s a ga in s e t p o i n t o f 1.0. d u e to i t s vers a t i l e f u n c t i o n a l fo r m a nd wi de sig n a l d y namic ra n g e , t h e ad l 5390 ca n f o r m t h e co r e o f a va r i ety o f us ef u l f u n c t i o n s such as q u a d ra t u r e m o d u l a t o rs, ga i n an d phas e a d - j u ste r s , and m u lt i p l e xe rs . a t ma x i m u m g a in on one chan nel, t h e o u t p ut 1 db com p r e ssio n p o in t a nd n o is e f l o o r r e fer e n c e d to 50 ? a r e 11 db m an d ?148 db m/h z , r e sp ec ti ve l y . th e b r o a d f r e q u e nc y re sp ons e of t h e r f / i f an d g a i n c o n t r o l p o r t s a l l o w s th e ad l5390 t o be us e d in a va r i ety o f a p p l ica t io n s a t dif f er en t f r e q uen c ies. the b a ndwi d t h fo r t h e rf/if sig n a l p a t h ext e n d s f r o m a p p r o x ima t e l y 20 m h z t o beyon d 2.4 g h z, while t h e ga in con t r o ls sig n als al l o w fo r mo d u l a t i on r a t e s g r e a ter t h an 200 m h z. m a tch i n g b e tw e e n t h e tw o ga i n cha nnels is en su r e d b y ca r e f u l la yo u t and desig n . si n c e t h e y a r e m o n o li t h ic and a r r a n g e d symmet r ic al l y o n t h e die , t h er mal a nd p r o c es s g r adie n t s a r e mini mi ze d . t y pica l ga i n an d ph as e misma t ch a t max i m u m ga i n a r e <0.5 db and <0.5. 04954-026 linear attenuator linear attenuator i-v v qbb q channel baseband input v irf , i cha nnel single-ended or differential v ibb output disable single-ended or differential 50 ? output v qrf , q channel single-ended or differential i channel baseband input v-i v-i f i g u re 26. si mpl i f i e d a r ch itec t u r e of t h e a d l5 39 0 noise a n d dist orti o n the sig n al p a th f o r a p a r t ic u l a r c h a nne l o f t h e ad l5390 co n - sis t s basical l y o f a p r e a m p lif i er fol l o w e d b y a var i a b le a t t e n u a t or a nd t h en an o u t p u t dr i v er . e a ch s u bb lo c k con t r i b u t e s s o me le vel o f n o is e and disto r t i o n to t h e d e sir e d sig n a l . a s t h e chan n e l gai n is va r i e d , t h e s e r e l a t i v e con t r i b u t i o n s cha n ge . th e o veral l ef fe c t i s a d e p e nd e n c e of output noi s e f l o o r and output d i stor t i on l e vel s on t h e g a i n s e t p oi n t . f o r th e a d l 5 390, th e d i st o r ti o n i s al wa ys d e t e rm i n ed b y t h e p r e a m p lif i er . a t t h e hig h est ga i n s e t p oin t , t h e s i g n al c a p a ci ty , as des c r i b e d b y t h e 1 db co m p r e ss io n p o i n t (p1 d b ) a n d t h e t h ir d- o r der in t e r c e p t (o ip3), a r e a t t h e hig h es t l e ve ls. a s t h e gain is r e d u ce d , t h e p1 db an d oip3 a r e r e d u ce d in ex ac t p r o p o r t i o n . a t t h e hig h er gain s e t p o i n t s, t h e o u t p u t n o i s e is do mina t e d b y t h e p r e a m p lif i er as w e l l . a t lo w e r ga in s, t h e co n t r i b u t i o n f r o m t h e p r e a m p lif i er is co r r es p o n d ing l y r e d u ce d and e v en t u al l y a n o is e f l o o r , s e t b y t h e o u t p u t dr i v er , is r e ach e d . a s f i gur e 27 i l lu st r a te s , t h e ove r a l l dy n a m i c r a nge d e f i ne d a s a r a t i o of o i p 3 t o o u t p u t n o is e f l o o r r e ma in s co n s t a n t fo r t h e hig h er ga in s e t p o i nt s . a t s o me g a i n l e vel, t h e noi s e f l o o r l e vel s of f and t h e dy n a m i c r a ng e d e g r a d e s c o m m e n s u r a t e w i t h t h e g a i n r e d u c t i o n . 175 170 165 160 155 150 145 140 dy namic range (db hz) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 gain setpoint 04954-027 dynamic range = oip3 ? (output noise floor (no carrier)) f i gure 27. d y n a mic rang e v a riation w i th g a in s e tpoint
adl5390 rev. 0 | page 12 of 24 appli c ations using the adl5390 the adl539 0 is des i g n e d t o o p er a t e in a 50 ? im pe da n c e syst em . f i gur e 29 i l l u s t ra t e s an exa m ple w h er e t h e rf/i f in p u ts a r e dr i v en in a sin g l e -e n d e d fashio n, w h i l e t h e dif f er en t i al rf o u t - put i s c o n v e r te d to a s i ng l e - e nd e d output w i t h a r f b a lu n. t h e b a s e b a nd g a i n c o n t rol s fo r t h e i an d q ch an nel s are t y pi c a l l y dr i v en f r o m dif f er en t i al d a c ou t p uts. th e p o w e r s u p p lies, vp rf an d vps 2 , s h o u l d b e b y p a s s e d a p p r o p r i a t e l y w i t h 0.1 f a nd 100 pf ca p a ci t o rs. l o w ind u c t a n c e g r o u ndin g o f t h e cm op a nd cmrf co m m o n pin s is e s s e n t ia l t o p r e v e n t unin t e n t io na l p e ak in g o f t h e g a in. th e exp o s e d p a ddle on t h e un derside o f t h e p a c k a g e s h o u ld be s o lde r e d t o a lo w th ermal a n d e l e c tr ical i m p e d a n c e g r o u nd plan e. rf in put a n d ma tch i ng the rf/if in p u ts p r es en t 250 ? r e sist i v e t e r m ina t ion s t o g r ou nd. i n ge ne r a l, t h e i n put s i g n a l s shou l d b e a c - c oupl e d t h r o ug h dc -b lo ck in g c a p a ci to rs. the i n p u ts ma y b e dr i v en dif - fer e n t ia l l y o r sin g le-e nde d , in w h ich cas e t h e un us e d in pu ts ar e c o nne c te d to c o mmon v i a t h e d c - b l o ck i n g c a p a c i tors . t h e ad l5390 s p e r f o r ma n c e is n o t deg r ade d b y dr ivin g t h es e in p u ts s i ng l e - e n d e d. t h e i n put i m p e d a nc e c a n b e re du c e d b y pl a c i n g ext e r n a l sh un t ter m ina t io n r e sist o r s t o co mm on o n t h e s o ur ce side o f t h e dc -b l o ckin g ca p a c i t o rs s o t h a t t h e q u ies c en t dc- b ias le v e l o f t h e ad l5390 in p u ts is n o t a f fec t e d , as s h o w n in f i gur e 29. ca p a ci ti ve r e ac tan c e a t t h e rf in p u ts can b e co m p en s a t e d f o r w i th se ri e s in d u cta n c e . i n f a ct , th e cu s t o m e r ev al u a ti o n b o a r d has hi g h i m p e dan c e li n e t r aces b e tw e e n t h e s h un t t e rm i - n a t i o n p a d s a n d t h e d e v i c e i n pu t pi ns , w h i c h prov i d e s s e r i e s i n - d u c t a n c e a nd i m pro v e s t h e re tu r n l o ss a t 1 . 9 g h z to b e tte r t h an ?15 db w i t h t h e sh u n t ter m ina t i o n r e m o ve d , as sho w n i n f i gur e 28. s11 match without 66.5 ? termination s11 match with termination 0 ?5 ?10 ?15 ?20 ?25 ?30 ?35 db 20.0 305.6 591.2 876.8 1162.4 1448.0 1733.6 2019.2 2400.0 115.2 210.4 400.8 496.0 686.4 781.6 972.0 1067.2 1257.6 1352.8 1543.2 1638.4 1828.8 1924.0 2114.4 2209.6 2304.8 frequency (mhz) 04954-028 f i gure 2 8 . adl53 90 c u st om er e v a l ua tio n bo ar d rf input return l o ss . 04954-029 c12 (see text) c11 (see text) c8 100pf vp c7 0.1 f vp c4 0.1 f b a sw1 r8 10k ? vp ibbm ibbp qbbp qbbm l2 0 ? c5 10nf rfin_q r22 66.5 ? l1 0 ? c2 10nf rfin_i r2 66.5 ? c1 10nf c6 10nf l4 120nh l3 120nh c14 0.1 f c10 100pf c9 0.1 f vp c17 10nf c18 10nf rfop 15 3 4 t1 etc1-1-13 (m/a-com) ibbp ibbm vps2 dsop qbbp qbbm vprf cmrf inmi ipmq cmop cmop rfom rfop q f l p qflm cmop cmop cmrf vprf iflp iflm adl5390 inpi inpq c3 100pf f i gure 29. bas i c connec t ions
adl5390 rev. 0 | page 13 of 24 rf output and matching the rf/if o u t p u t s o f the ad l5 390, rfo p a nd rfo m , a r e o p en col l e c t o rs o f a t r a n sim p e d an ce am plif ier t h a t n e e d t o b e p u l l e d u p t o t h e p o si t i v e s u p p l y , p r efera b l y wi t h rf ch ok es, as sh o w n in f i gur e 30. t h e n o m i na l o u t p u t im p e dan c e lo ok in g i n t o e a ch indivi d u a l o u t p u t p i n is 25 ? . c o n s e q uen t ly , t h e dif f er en t i a l o u t p ut i m p e dance is 50 ? . 04954-030 50 ? differential 10pf 1:1 rf output rfom rfop r t r t 120nh 10pf v p g m i sig 0.1 f f i g u re 30. r f o u t p ut inter f ace to t h e a d l 5 3 9 0 sh o w i n g coupl i ng capa cit o rs, p u ll-u p r f ch okes, and b a lun since t h e o u t p ut dc le ve ls a r e a t t h e p o si t i v e s u ppl y , ac-co u pling ca p a ci t o rs a r e us ual l y n eede d b e tw een t h e adl5390 o u t p u t s a nd t h e n e xt stag e in t h e syst em. a 1 : 1 rf b r o a d b and ou t p u t b a l u n, such as t h e et c1-1-13 ( m /a - c o m) , con ver t s t h e dif f er e n t i a l o u t p ut o f t h e a d l53 90 i n t o a s i n g le- e n d ed si g n al . n o t e tha t the l o s s a n d bala n c e o f th e bal u n d i re c t ly i m p a c t t h e app a re n t output p o we r , no i s e f l o o r , a n d g a i n / phas e err o rs o f th e ad l5390. i n cr i t ical a p plica t i o n s , na rr o w -b a n d b a l u ns wi t h l o w lo ss and su p e r i or b a l a nc e are re c o mme n de d. i f t h e o u t p u t is t a k e n in a sin g le-e n d e d fashio n dir e c t l y in t o a 50 ? lo ad thr o ug h a co u p lin g c a p a ci t o r , th er e wil l b e a n im p e dan c e misma t ch. this ca n be r e s o l v ed wi th a 1:2 bal u n t o co n v er t t h e sin g le-e nde d 25 ? o u t p u t im p e dan c e to 50 ? . i f lo ss o f sig n a l swi n g is n o t cr i t ica l , a 25 ? b a ck t e r m i n a t ion i n s e r i es wi t h t h e o u t p u t p i n can als o be us e d . the un us e d o u t p u t p i n m u s t s t il l b e p u l l ed u p t o t h e p o si ti v e s u p p l y . the us er ma y l o ad i t thr o ug h a co u p lin g c a p a ci t o r wi th a d u mm y lo ad t o p r es er v e balan c e . th e misma t ch e d ga i n o f t h e ad l53 90 w h en t h e o u t p u t is sin g l e - ende d v a r i es s l i g h t l y w i th d u m m y l o a d va l u e , a s s h o w n i n f i gu r e 31. 10 ?10 ?4 ?2 0 2 4 6 8 10 100 1000 10000 04954-043 frequency (mhz) gain ( d b) r l2 = open r l2 = 50 ? r l2 = short r l = 50 ? f i g u re 31. g a in of t h e a d l5 3 90 u s i n g a s i ngle -ended o u t p ut with d i fferent du mm y l o a d s , r l2 on the un used o u t p ut, g a in s e tp oint = 1. 0 the rf o u t p u t s i g n a l can b e dis a b l e d b y r a isin g t h e dsop p i n t o t h e p o si t i v e su p p l y . th e o u t p u t dis a b l e f u n c t i o n p r o v i d es >40 db a t ten u a t io n o f t h e i n p u t sig n a l , e v e n a t f u l l ga in. t h e in t e r f ace t o ds o p is hig h im p e dan c e an d t h e ou t p ut dis a b l e a nd o u t p u t enab le r e s p o n s e tim e s a r e <100 n s . i f the o u t p u t d i s a bl e f u nc t i on i s not ne e d e d , t h e d s op s h ou l d b e t i e d to g r ou nd. drivi n g th e i-q baseband g a in c o ntr o ls the i an d q ga in co n t r o l in p u ts t o th e ad l539 0 s e t t h e ga in f o r e a ch cha n ne l . th es e in p u ts a r e dif f er en t i al an d s h o u l d n o r m al l y ha ve a c o m m on - m o d e l e vel of 0 . 5 v . h o w e ve r , w h e n di f f e r e n - tial l y dr i v en, t h e co mm o n m o de ca n va r y f r o m 250 mv t o 750 mv w h ile stil l al lo win g f u l l ga in co n t r o l . e a c h in p u t p a ir has a n o minal i n p u t s w in g o f 0.5 v dif f er en t i al a r o u nd t h e co mm on- m o d e le vel. t h e max i m u m gain is achie v e d if t h e dif f er en tial v o l t a g e is eq ual t o + 500 mv o r ?500 mv . s o wi th a co mm on-m o d e lev e l o f 500 mv , ib b p and ib b m wil l each swin g betw een 250 mv an d 75 0 mv . the i and q g a i n con t r o l i n pu t s can al s o b e dr i ven w i t h a si ng l e - en d e d sig n a l . in t h i s c a s e , on e s i d e of e a ch i n put shou l d b e t i e d t o a lo w n o is e 0. 5 v v o l t a g e s o urce (a 0.1 f dec o u p lin g c a p a ci - to r lo ca te d clo s e to t h e p i n is r e co mm e nde d), w h i l e t h e o t h e r i n pu t s w i n g s f r o m 0 v to 1 v . l o w sp e e d, s i ng l e - e nde d dr i ve can e a s i l y be a c h i ev ed u s i n g 1 2 - b i t v o l t a g e o u t p u t d a c s s u c h a s ad830 3 ( s er ia l s p i ? in ter f ac e) or ad85 82 ( p a r al lel in ter f ac e) d a cs . a refer e nce v o l t a g e sh o u l d als o b e s u p p l i e d . d i f f er e n t i al dr i ve ge ner a l l y of fers sup e r i o r e ven-o rder d i s t or t i on a n d l o w e r noi s e t h an s i ng l e - e nd e d d r iv e. th e ba n d wid t h o f t h e baseba n d co n t r o ls e x cee d s 200 mh z ev en a t ful l -s c a l e baseba n d d r i v e . t h i s allo ws f o r v e r y fa s t g a in m o d u - l a ti o n o f t h e rf in p u t sig n al . i n cas e s w h er e lo wer m o d u l a t i o n b a ndwi d t h s a r e accep t ab le o r de sir e d , ex ter n a l f i l t er ca p a c i to rs ca n be co nn e c t e d acr o s s p i n s if lp t o iflm a n d p i n s q f lp t o qflm t o r e d u ce t h e in g r es s o f b a s e b a n d n o is e a nd s p ur io us sig n al in t o t h e c o n t r o l p a th.
adl5390 rev. 0 | page 14 of 24 the 3 db b a ndwi d t h is s e t b y ch o o sin g c fl t acco r d in g t o t h e fol l o w ing e q u a t i o n : pf 0.5 nf 10 khz 45 db 3 + external c f t h i s eq ua ti o n ha s b een v e r i f i e d f o r val u e s o f c fl t f r o m 10 pf t o 0.1 f ( b andwid th s e t t in g s o f a p p r o x ima t e l y 4.5 kh z t o 4 3 m h z) . interfacing to h i gh s p eed dacs the ad977x famil y o f d u al d a cs is w e l l s u i t e d t o dr i v in g t h e i a nd q ga in con t r o ls o f th e ad l5390 wi th fas t m o d u l a tin g sig - nals. w h i l e t h es e in pu ts can i n g e n e ral b e dr i v e n b y an y d a c, t h e dif f er en t i al o u t p uts an d b i as le v e l o f t h e a d i txd a c? fam- i l y a l lo ws fo r a dir e c t co n n e c t i o n b etwe e n d a c a nd m o d u l a to r . the ad977x famil y o f d u al d a cs has dif f er en t i al c u r r en t o u t - p u ts. the f u l l -s c a le c u r r en t is us er p r og ra mma b l e a nd is us ual l y s et t o 20 ma, tha t is each o u t p u t swin gs f r o m 0 ma t o 20 ma. the basic in t e r f ace b e tw een t h e ad9777 d a c o u t p u t s an d t h e ad l5390 i a nd q ga in co n t r o l in p u ts is sh o w n in f i gur e 32. resis t o r s r1 and r2 (r1 = r2) s et t h e dc b i as l e v e l acco r d i n g to th e f o llo w i n g e q ua ti o n : bi a s l e v e l = a v er a g e o u tp u t c u r r en t r1 f o r ex am pl e , if t h e f u l l - s c al e c u r r en t f r om e a ch out p u t is 20 ma , e a ch o u t p u t w i l l ha v e an a v er a g e c u r r en t o f 10 ma. th er efo r e , to s et t h e b i as le vel to t h e r e co m m e nde d 0.5 v , r1 a nd r2 s h o u l d be s e t t o 50 ? eac h . r1 and r2 sh o u ld alwa ys be eq ual . i f r3 is o m i t t e d , this wil l r e s u l t in a n a v a i lab l e s w in g f r o m the d a c of 2 v p- p dif f er e n t i a l , w h i c h is t w i c e t h e max i m u m v o l t ag e ra n g e r e q u ir e d b y t h e ad l539 0. d a c r e s o l u t i o n can b e maxi - mi ze d b y ad di ng r3, w h ich s c a l es do wn t h is vol t a g e acco rdin g t o th e f o llo w i n g eq ua t i o n : = swing scale full () () ? ? ? ? ? ? ? ? + ? + r3 r2 r2 r3 r2 r1 i max 1 || 2 optional low-pass filter 04954-032 r1 r2 r3 i outb2 i outa2 qbbm qbbp i outb1 i outa1 ibbm ibbp ad9777 adl5390 optional low-pass filter r1 r2 r3 f i g u re 32. bas i c a d 97 77- to -a dl 53 90 i n ter f ac e r3 ( ? ) 04954-033 130 50 55 60 65 70 75 80 85 90 100 105 115 120 110 125 95 di ffe re nti a l p e ak-p e ak s w i n g (r3 ) (v p-p) 1.15 1.08 1.10 1.13 1.00 1.02 1.05 0.95 0.97 0.88 0.90 0.92 0.77 0.80 0.82 0.85 0.70 0.75 0.72 f i gure 3 3 . p e a k -p ea k d a c o u tput s w ing vs . s w i n g s c al ing resist o r r 3 (r1 = r2 = 50 ) f i gur e 33 s h o w s t h e r e la t i o n s h i p b etw e e n t h e val u e o f r 3 a n d th e peak ba se b a n d v o l t a g e w i th r 1 a n d r 2 eq ual t o 50 ?. a s s h o w n in f i gur e 33, a val u e o f 100 ? f o r r3 w i l l p r o v ide a p e ak-p eak swin g o f 1 v p- p di f f e r en tial in t o th e ad l5 390 s i a n d q in p u ts . w h en usi n g a d a c, lo w-p a s s i m a g e r e je c t f i l t e r s a r e typ i cal l y us e d t o e l imina te t h e n y q u i s t i m a g es p r o d uce d b y t h e d a c. the y a l s o p r o v i d e t h e a dde d b e n e f i t o f elim ina t in g b r o a d b and n o is e t h a t mig h t fe e d in t o t h e m o d u l a t o r f r o m t h e d a c.
adl5390 rev. 0 | page 15 of 24 generalized mo dula tor the ad l5390 c a n b e co nf igur e d as a tradi t io na l i q q u adra t u r e m o d u l a t o r o r as a lin e a r v e c t o r m o d u l a t o r b y a p p l yin g sig n als t h a t a r e i n quadra t u r e t o t h e rf/if in p u t cha n ne ls. si n c e t h e qu a d r a tu re ge n e r a t i on i s p e r f or me d e x te r n a l ly , it s a c c u r a c y an d b a ndwi d t h a r e det e r m i n e d b y t h e us er . the us e r -def i n e d b a n d - wi d t h is a t t r ac t i v e fo r m u l t io c t a v e o r lo w e r if a p plica t io n s wher e o n -chi p , hig h acc u rac y q u adr a t u r e g e n e r a tio n is tradi - t i on a l ly d i f f i c u lt or i m pr a c t i c a l. t h e g a i n c o n t ro l pi ns ( i bbp/m a nd q bbp/m ) bec o m e t h e in -p hase (i) a n d q u ad r a t u r e (q) base- ba n d in p u ts f o r th e q u ad ra t u r e m o d u la t o r an d th e gain/p h a se co n t r o l fo r t h e v e c t o r m o d u l a t o r . the wide m o d u la t i on b a n d - wid t hs o f the ga in con t r o l in t e r f ace al lo w f o r hig h f i deli ty bas e - ba n d sign als t o be g e n e ra t e d f o r th e q u ad ra t u r e m o d u la t o r an d fo r hig h sp e e d ga in and phas e a d j u st m e n t s to b e gen e r a te d fo r th e v e ct o r m o d u la t o r . rf/if sig n als can b e in tr o d uc e to th e adl5390 in q u adra t u r e by u s i n g a t w o - w a y 9 0 o p o w e r spli t ter s u ch as t h e mini -cir c u i t s q c n-12. e a ch o u t p u t o f a n ide a l 90 o po w e r s p li t t e r is 3 d b smal ler t h a n t h e in pu t and has a 90 o phas e dif f er en ce f r o m t h e ot he r output . in re a l it y , t h e 9 0 o p o w e r s p li t ter w i l l ha v e i t s o w n in s e r t io n loss, w h ich can b e d i f f er en t fo r e a ch o u t p ut, c a usin g a mag n i t u d e i m b a l a nc e. f u r t he r m ore, qu a d r a t u re out p ut w i l l not be m a i n ta in e d o v e r a la r g e f r eq ue n c y ra n g e , in tr od ucin g a p h a s e im ba la n c e . th e t y pe o f 90 o po wer s p li t t e r th a t sh o u ld be use d fo r a p a r t ic u l a r a p plic a t ion wi l l b e det e r m i n e d b y t h e f r e q uen c y , ba n d w id th, a n d a c cura c y n eed e d . i n so m e a p p l ica t i o n s m i n o r ma g n i t ude a n d phas e im b a la n c es ca n b e ad j u s t e d f o r in t h e i/q ga in con t r o l in p u ts. vector m o dulator 04954-034 |a| a +0.5 ?0.5 +0.5 ? 0.5 v i v q min gain < ? 30db max gain = 5db f i gure 34. v e c t or g a in r e presentat i on the ad l5390 c a n b e us ed as a v e c t o r m o d u l a to r b y dr i v in g t h e r f i an d q i n put s s i ng l e - e nd e d t h rou g h a 9 0 o p o w e r s p li t ter . b y c o n t ro l l i n g t h e rel a t i ve a m ou n t s of i and q c o m p o n e n t s t h a t a r e s u mm e d , co n t i n uo us ma g n i t u d e an d phas e con t r o l o f t h e ga i n is p o s s i b l e. c o nsider t h e v e c t o r ga in r e p r es e n t a t i o n o f t h e ad l5390 exp r es s e d in p o la r f o r m in f i gur e 34. the a t t e n u a t ion fac t o r s fo r t h e r f i a n d q sig n al co m p on en ts a r e r e p r es en t e d on t h e x- axis an d y - axis, r e sp e c t i vely , b y t h e b a s e b a nd ga in con t r o l in p u ts v ibb and v qbb . th e r e s u l t a n t o f t h ei r v e c t o r s u m r e p r esen t s t h e v e c t o r ga in, w h ich can als o b e exp r es s e d as a ma g n i t ude and phas e . b y a p plyi n g dif f er en t com b ina t io n s o f b a s e b a nd i n p u t s , a n y v e ct o r g a i n w i t h i n th e un i t ci r c le c a n b e p r o g r a m m ed . th e ma g n i t u d e and phas e (w i t h r e s p e c t t o 90 o ) acc u rac y o f th e 90 o p o w e r s p li t ter w i l l dir e c t ly a f fe c t t h is r e p r es en t a t i o n an d co u l d b e s e en as an o f fs et a nd sk e w o f t h e c i r c le . a c h a n g e in sig n o f v ibb or v qb b ca n be v i ew ed a s a c h a n g e i n sig n o f the ga in o r as a 180 p h as e c h a n g e . th e o u t e r m ost cir c le r e p r es en ts t h e maxim u m ga in ma g n i t ude . th e cir c le o r ig in i m p l i e s , in t h e o r y , a ga in o f 0. i n p r ac t i ce, cir c u i t misma t ch es a nd una v oi da b l e sig n a l fe e d t h r o u g h li mi t t h e mini m u m ga i n to a p p r o x ima t e l y ?30 db . the phas e a n g l e b etwe e n t h e r e s u l t an t ga in v e c t o r and t h e p o si t i v e x- a x is is def i n e d as t h e pha s e shif t. n o t e t h a t t h er e is a n o mina l, sys t ema t ic ins e r t i o n phas e t h r o u g h th e ad l5390 t o which t h e p h as e s h if t is added . i n t h e f o l l o w in g dis c ussio n s, t h e syst ema t ic in s e r t io n phas e is no r m a l ize d t o 0. the co r r esp o nd en c e b e t w e e n t h e desir e d ga i n and phas e and t h e c a r t esi a n in p u ts v ibb an d v qbb is g i v e n b y sim p le tr ig o n o - m e tri c i d en ti t i es ( ) () [ ] 2 2 / / o qbb o ibb v v v v gain + = ( ) / = w h er e: v o is th e bas e band s c aling co n s t a n t (285 mv). v ibb and v qb b a r e t h e dif f er en t i a l i a nd q b a s e b a nd v o l t a g es cen t er e d a r o u nd 500 mv , r e s p e c ti v e l y ( v ibb = v ibbp ? v ibbm ; v qb b = v q bbp ? v q bbm ). n o t e th a t wh e n e v a l u a ti n g th e a r ct a n g e n t fun c t i o n , th e p r o p e r phas e q u adran t m u s t b e s e le c t e d . f o r exa m ple , if t h e p r i n ci p a l v a lu e of t h e arc t ange n t ( k now n a s arc t ange n t ( x ) ) i s u s e d , qu a d - r a n t s 2 an d 3 wo u l d b e in ter p r e te d mi st a k e n ly as q u a d r a n t s 4 and 1 , resp e c t i vely . i n ge ner a l, b o t h v ibb an d v qbb a r e n eed e d in co n c er t t o m o d u la te t h e ga i n and t h e phas e . pur e a m pli t ude m o d u l a t i on is r e p r es en te d b y radial m o v e men t o f th e ga in v e c t o r ti p a t a f i xed a n g l e , w h ile p u r e p h as e m o d u l a - ti o n i s r e p r e s en t e d b y r o ta ti o n o f th e t i p a r o u n d th e ci r c le a t a f i xed radi us. u n lik e tradi t io nal i - q m o d u la t o rs, th e ad l5390 is desig n ed t o ha ve a lin e a r rf sig n al p a th f r o m in p u t t o o u t p u t . t r ad i t io na l i - q m o d u l a t o rs p r o v id e a l i mi t e d lo ca r r i er p a t h t h r o u g h w h ich a n y a m pl i t ude i n fo r m a t io n is r e m o v e d . vector modulator examplecdma2000 the ad l5390 c a n b e us ed as a v e c t o r m o d u l a to r b y dr i v in g t h e rf i a nd q in pu ts ( i npi and i n pq) sin g le -e nde d t h r o u g h a 9 0 o p o w e r s p li t ter a nd co n t r o l l in g t h e ma g n i t u d e and phas e usin g t h e gain con t r o l in p u ts. t o de mo n s t r a t e op era t i o n as a v e c t o r m o d u l a t o r , a n 8 80 mh z sin g le-ca r r i er cd ma2 000 t e s t m o de l sig n al (f o r wa r d p i l o t, s y n c , p a gin g, a n d six t r a f f i c as p e r
adl5390 rev. 0 | page 16 of 24 3 g p p 2 c.s0010 -b , t a b l e 6.5.2.1 ) was a p p l ie d t o th e ad l5390. a ca v i ty-t u n e d f i l t er was us e d to r e d u ce n o i s e f r o m t h e sig n al s o ur ce bein g a p p l ied t o t h e de vice . th e 4.6 m h z p a s s ban d o f th i s f i l t e r i s a p p a r e n t in t h e s u bseq ue n t s p ec tral p l o t s . f i g u r e 3 5 s h o w s th e o u t p u t s i gnal s p ectr um f o r a p r ogra m m e d ga in an d pha s e o f 5 db a nd 45 o . p ou t is e q ua l to 0 dbm and v ibb = v qbb = 0.353 v (cen t e r e d a r o u n d 500 mv), i . e ., v ibbp ? v ibbm = v qb bp ? v qbbm = 0.353 v . a d jacen t c h anne l p o wer is m e as ur ed in 30 kh z r e s o l u tio n ba ndwid th a t 75 0 kh z an d 1.98 mh z ca r r ier o f fs et. n o is e f l o o r is m e asur e d a t 4 m h z c a r r i e r of f s e t i n a 1 m h z re s o lut i on b a nd w i dt h . 1 cu2 cu2 cu1 c0 c0 cl1 cl1 cl2 cl2 cu1 04954-035 a center 880mhz 500khz/ span 5mhz ref lvl 5dbm 0.7db offset 1avg marker 1 [t1] ?14.38dbm 880.00755511mhz rbw 30khz vwb 300khz swt 2s rf att 20db mixer ? 10dbm unit db 1 [t1] ?14.38dbm 880.00755511mhz ch pwr 0 ?7 0 ?8 0 ?9 0 ? 100 ?6 0 ?5 0 ?4 0 ?3 0 ?2 0 ?1 0 1 [t1] ? 14.38dbm 880.00755511mhz ch pwr 0.13dbm acp up ? 62.00db acp low ? 61.98db alt1 up ? 87.02db alt1 low ? 87.04db 1rm ext f i gur e 35. o u tput sp ectrum , sing le- c ar rier cdma 20 00 t e s t m o del a t ?5 dbm, v i = v q = 0 . 35 3 v , a c p mea s ur e d a t 750 kh z and 1.98 m h z c a r r i e r o ffse t , input sig n al Cf ilt ered u s ing a cav i t y - t uned f ilt er ( p as s ba nd = 4.6 m h z) h o ldin g t h e i and q ga in con t rol v o l t a g es s t eady a t 0.353 v , in p u t p o wer was sw ep t. f i gur e 36 s h o w s t h e r e s u l t in g o u t p ut p o w e r , n o is e f l o o r , a n d ad jac e n t cha nne l p o w e r ra t i o . the n o i s e f l o o r is p r es en te d as n o is e i n a 1 mh z b a ndwi d t h as def i n e d b y t h e 3 g pp2 sp e c if ica t ion. ?30 ? 100 ?90 ?80 ?70 ?60 ?50 ?40 ?30 ?100 ?90 ?80 ?70 ?60 ?50 ?40 ?30 ? 25 ? 2 0 ? 15 ? 1 0 ? 5 0 5 04954-044 output power (dbm) acp (dbc ) nois e (dbm @ 4 m hz ca rrie r offs e t ) acp: 750khz offset, 30khz rbw acp: 1.98mhz offset, 30khz rbw noise: 4mhz offset, 1mhz rbw f i g u re 36. no is e an d a c p v s . o u t p ut p o we r , s i ng l e - c a r r i e r cdm a 2 0 0 0 t e s t mo del , v i = v q = 0. 3 53, a c p m e asu r ed i n 3 0 kh z rbw at 7 5 0 kh z and 1. 9 8 m h z ca rr ier o f f s et , nois e m e as ur ed at 4 m h z ca rri er o ffset a c p is st i l l i n c o m p lian c e wi t h t h e st anda r d ( < ?45 db c @ 750 kh z an d adl5390 rev. 0 | page 17 of 24 quadrature modulator the adl539 0 c a n be us e d as a q u adr a t u re mo d u l a t o r b y dr iving t h e rf i a nd q i n p u ts ( i npi and inpq) si n g le- e nde d t h r o u g h a 90 o phas e s p li t t e r t o s e r v e as t h e l o in pu t. i/q m o d u l a t i on is a p p l ie d t o t h e b a s e b a nd i and q ga in con t r o l in p u t s (i bb p / i bbm and qb bp /q bb m). a s i m p lif i e d s c he ma t i c is sho w n in f i gure 38. 04954- 038 90 phase splitter sum port term port port 1 port 2 qcn-12 qbbp qbbm i bbp i bbm rfom rfop inpi q data i data inpq 15 34 rofp lo in adl5390 10nf 10nf 10nf 10nf 66.5 ? 66.5 ? 50 ? etc1-1-13 (m/a-com) f i g u re 38. q u ad r a t u r e m o du lat o r a p p lic at i o n si ng l e s i d e b a nd p e r f or manc e o f a qu a d r a ture mo d u l a tor i s d e t e r m i n e d b y t h e ma g n i t ude and phas e b a lan c e (co m p a r e d t o a 90 o o f fs et ) a t th e s u mma t i o n p o in t o f t h e i a n d q sig n als . b e c a u s e th e adl5390 has ma t c h e d a m p l if iers a nd mixers in t h e i and q channel, m o st o f t h e sin g le si deb a nd p e r f o r ma n c e w i l l b e de te r m ine d b y t h e e x ter na l 9 0 o p h a s e s p l i t t e r . good s i n g l e sideb a nd p e r f o r ma n c e can b e achi e v e d b y ch o o sin g a wel l - b a l a n c e d 9 0 o phas e s p li t t er . h o w e v e r , phas e a nd ma g n i t ude dif f er e n ce s i n t h e 9 0 o phas e s p l i t ter can b e co r r e c te d b y ad j u s t ing t h e ma g n i t ude and phas e o f t h e i a nd q da t a . f i gur e 39 s h o w s th e pe rf o r m a n c e o f th e a d l 5 390 u s ed i n c o n j un ct i o n w i th m i n i - circ u i ts q c n - 1 2 9 0 o p o w e r s p li t t er . f i gur e 40 sh o w s t h e sing le sideb a n d im p r o v em en t as t h e i a n d q da t a is ad j u s t e d in ma g n i t ude a nd phas e to achie v e b e tter sing le sideb a n d p e r f o r ma n c e. f o r maxim u m d y na mic ran g e , th e ad l5390 sh o u ld be dr i v en as clos e t o t h e ou t p ut 1 db com p r e s s io n p o i n t as p o s s i b le. th e o u t p u t p o w e r o f th e ad l5390 in cr eas e s l i n e a r ly wi t h t h e rf (l o ) i n p u t po w e r a n d ba se ba n d ga i n co n t r o l in p u t v o l t a g e un til th e ad l5390 r e ac h e s com p r e s s io n. a t t h e 1 db co m p r e s s io n p o in t, t h e lo wer sideb a n d st a r ts t o in cr e a s e . f i g u r e 41 dem o n - s t ra t e s t h e ou t p u t s p ec tr um o f a 3-ca r r i er cd ma2000 sig n al a p p l i e d t o t h e i/q ba se ba n d ga in co n t r o l in p u t s . a s t h e r f (l o ) p o we r i s i n c r e a s e d, t h e re l a t i ve a m ou n t of noi s e i s re d u c e d u n t i l th e ad l5390 go es in t o co m p r e s s io n. a t this p o in t, t h e r e la t i v e n o is e i n cr e a s e s, as sho w n in f i g u r e 42. an alog de vices h a s sev e ral q u ad ra t u r e /v ec t o r m o d u la t o r s tha t h a v e highl y acc u ra t e in tegra t e d 90 o p h as e s p li t tersad8340, ad8341, ad83 45, ad8346, ad8349tha t c o v e r a va r i ety o f f r e q u e nc y b a nd s . 04954-039 - 9 0 -80 1 2 3 4 a center 900mhz 700khz/ span 7mhz ref 7dbm att 35db * rbw 3khz vwb 10khz swt 780ms 1 ap clrwr 0 ?70 ?60 ?50 ?40 ?30 ?20 ?10 desired sideband ? 16.20dbm 900.998397436mhz undesired sideband ? 23.27db ? 1.996794872mhz third baseband harmonic ? 37.38db ? 4.004807692mhz lo feedthrough ? 41.27db ? 998.397435897khz f i gu re 3 9 . ss b q u a d r a t u re m o d u l a to r r e s u lt u s in g e x t e rn a l 9 0 p h as e sp l i t t e r , rf p in = ?1 5 db m, vi b b = vqbb = 0 . 5 v ( w it h r e f e r e n c e to a com m o n-m o d e v o lt ag e of 0. 5 v ) 04954-046 a center 900mhz 700khz/ span 7mhz ref 7dbm att 35db * rbw 3khz vwb 10khz swt 780ms 1 ap clrwr 0 ?70 ?80 ?90 ?60 ?50 ?40 ?30 ?20 ?10 1 2 3 4 desired sideband ? 16.78dbm 900.998397436mhz undesired sideband ? 51.81db ? 1.996794872mhz third baseband harmonic ? 38.45db ? 4.004807692mhz lo feedthrough ? 41.49db ? 998.397435897khz f i gure 40. ssb m o d u lator a p pl ic ati o ns with g a i n a n d p h a s e e rrors cor r ec ted , rf p i n = ? 1 5 db m, vibb = vqb b = 0. 5 v ( w ith refe r e nc e to a c o mmon-mod e v o lt ag e of 0. 5 v ) , i/ q p h as e o f f s et by 3 o , a n d m a g n it ude o f f s et by 0.5 v
adl5390 rev. 0 | page 18 of 24 04954-037 a ?30 ?40 ?50 ?60 ?70 ?80 ?90 ?100 ?110 ?120 ref ?26.6dbm * att 5db * rbw 10khz * vbw 300khz * swt 4s center 880mhz 1.29mhz/ span 12.9mhz nor 1 rm avg * pos ?26.623dbm standard: cdma is95c class 0 fwd tx channels ch1 (ref) ch2 ch3 total ?22.93dbm ?22.83dbm ?22.95dbm ?18.13dbm adjacent channel lower ?59.25db upper ?59.43db alternate channel lower ?62.79db upper ?63.11db 2nd al ternate channel lower ?60.71db upper ?60.32db rf multipl e xer the ad l5390 ma y als o b e us e d as a n rf m u l t i p lexer . i n this a p plic a t ion, t w o rf sig n a l s a r e a p plie d to t h e i n pi a nd in pq in p u ts, an d t h e b a s e b a n d v o l t a g es co n t r o l w h ich o f t h e tw o rf sig n als a p p e a r s a t t h e o u t p u t . f i gur e 43 il l u s t ra tes t h is a p p l ica - ti o n a n d s h o w s th a t w i th v ibb = 0.5 a nd v qbb = 0. 0 ( w it h re f e r- en c e t o a co mmo n - m o d e v o l t a g e o f 0.5 v). th e inp i sig n al is p r es en t e d t o t h e o u t p ut. th e n , w h en v ibb tra n s i ti o n s t o v ibb = 0.0 a nd v qbb re m a i n s e q u a l to z e ro , t h e r e i s no r f output . la s t l y , a s v qbb t r a n si t i o n s t o 0.5 v , t h e inpq sig n al a p p e a r s a t th e o u t p u t . w i t h v ibb = 0.0 a n d v qbb = 0.0, th e is ola t ion t o t h e o u t p u t is typ i cal l y >40 db a t 380 mh z. 04954-047 rf output v ibb v qbb tek stopped 200 acqs 24 aug 04 11:08:40 ch1 200mv ? ch2 500mv ? d s ch3 500mv ? d s m 40.0ns 1.25gs/s 800ps/pt a ch2 780mv 1 2 ch2 ch3 ch1 3 f i gure 4 1 . adl53 90 a s a q u a d r a tur e m o dula to r wi th the use o f an ex t e rnal 90 p h ase sp litt e r , rf/l o p o wer = ?1 dbm and g a in c o n t r o l inputs d r iv en d i ffer e ntially with 0.353 v p- p , 3- carr ie r cdm a 20 0 0 i/q d a t a ?78 ?77 ?76 ?75 ?74 ?73 ?72 ?71 ?70 ?69 ?25 ?20 ?15 ?10 ?5 0 output power (d bm) nois e (d bc) (1 mhz r b w ) noise (dbc) - 8mhz offset - 1mhz rbw 04954-031 f i g u re 43. a d l5 39 0 in r f m u lt ip lex e r a p pli c at ion f i gure 42. no is e v s . o u tput p o w e r
adl5390 rev. 0 | page 19 of 24 evaluation board the e v al ua tion bo a r d cir c ui t s c h e ma tic f o r th e ad l5390 is sh ow n i n fi g u re 4 4 . the e v a l ua t i on b o a r d is co nf ig ur e d to b e dr i v e n f r o m a sin g le-ende d 50 ? s o ur ce . al t h o u g h t h e in p u t o f th e adl5390 is dif f er en t i a l , i t ma y b e dr i v e n sin g le-e nde d w i t h n o lo ss o f pe rf o r m a n c e . the lo w - p a s s cor n er f r e q uen c y o f t h e b a s e b a n d i a nd q cha n - nels ca n b e r e d u ce d b y in st a l li ng ca p a ci to rs in t h e c11 and c12 p o si t i o n s. the l o w-p a s s co r n er f r e q uen c y fo r ei t h er cha n ne l is a pprox i m a t e d by pf 0.5 nf 10 khz 45 db 3 + external c f o n th i s ev al ua tio n boa r d , t h e i a n d q ba se ba n d ci r c ui t s a r e iden t i c a l t o e a ch o t h e r , s o t h e fol l o w in g des c r i p t io n a p plies t o ea c h . t h e co nn ecti o n s a n d ci r c ui t co n f i g ura t i o n f o r th e i/ q ba se ba n d i n p u ts a r e d e scri be d in t a b l e 4. the bas e band in p u t o f t h e adl5390 r e q u ir es a dif f er en t i al v o l t - a g e dr i v e . the e v al u a t i on b o a r d is s et u p t o al lo w s u ch a dr i v e b y co nn e c t i n g t h e dif f er en t i al vol t a g e s o ur ce t o qb b p an d qb bm. th e comm on- m o d e vol t a g e sh o u l d b e ma i n t a i n e d a t a p p r o x ima t e l y 0.5 v . f o r t h is co nf igura t io n, j u m p ers w1 t o w4 shou l d b e re move d. t h e ba se ba n d in p u t o f t h e ev a l ua ti o n boa r d ma y also be d r i v en wi t h a sin g l e -e nde d v o l t a g e. i n t h is cas e , a b i as l e v e l is p r o v i d e d t o t h e u n us e d i n p u t f r o m p o t e n t iom eter r10 b y in s t al l i n g e i t h er w1 o r w2. s e t t ing s w 1 in p o si tion b dis a bles t h e ad l 539 0 o u t p u t am p l if ier . w i th sw 1 se t t o p o s i ti o n a , th e o u t p u t a m p l i f i e r i s e n a b l e d . w i th s w 1 set t o p o si t i o n a , a n ext e r nal v o l t a g e si gnal , s u c h a s a p u l s e , ca n be a p p l i e d t o th e d s o p s m a co n n ect o r t o e x e r c i se th e output a m plif ier ena b le/ d is a b le f u n c t i on.
adl5390 rev. 0 | page 20 of 24 table 4. evaluation board configuration options component function default conditions r7, r9, r11, r14, r15, r19, r20, r21, c15, c19, w3, w4 i channel baseband interface. resistors r7 and r9 may be installed to accommodate a baseband source that requires a specific terminating impedance. capacitors c15 and c19 are bypass capacitors. for single-ended baseband drive, the potentiometer r11 can be used to provide a bias level to the unused input (install either w3 or w4). r7, r9 = not installed r11 = potentiometer, 2 k?, 10 turn (bourns) r14 = 4 k? (size 0603) r15 = 44 k? (size 0603) r19, r20, r21 = 0 ? (size 0603) c15, c19 = 0.1 f (size 0603) w3 = jumper (installed) w4 = jumper (open) r1, r3, r10, r12, r13, r16, r17, r18, c16, c20, w1, w2 q channel baseband interface. see the i channel baseband interface section. r1, r3 = not installed r10 = potentiometer, 2 k?, 10 turn (bourns) r12 = 4 k? (size 0603) r13 = 44 k? (size 0603) r16, r17, r18 = 0 ? (size 0603) c16, c20 = 0.1 f (size 0603) w1 = jumper (installed) w2 = jumper (open) c11, c12 baseband low-pass filtering. by addi ng capacitor c11 between qflp and qflm, and capacitor c12 between iflp and iflm, the 3 db low-pass corner frequency of the baseband interface can be reduced from 230 mhz (nominal) as given by the equation in the evaluation board section. c11, c12 = not installed t1, c17, c18, l3, l4 output interface. the 1:1 balun transfor mer, t1, converts the 50 ? differential output to 50 ? single-ended. c17 and c18 are dc blocks. l3 and l4 provide dc bias for the output. c17, c18 = 10 nf (size 0603) t1 = etc1-1-13 (m/a-com) l3, l4 = 120 nh (size 0603) c2, c1, r2 c5, c6, r22 i and q channel rf input interface. the single-ended impedance to the adl5390 rf inputs is 200 ?. shunt terminations r2 and r22 of 66.5 ? bring the impedances to 50 ?. c2 and c5 are dc bl ocks. c1 and c6 are used to ac-couple the unused side of the diffe rential inputs to common. c2 = c1 = 10 nf (size 0603) r2 = 66.5 ? 10 (size 0603) c5 = c6 = 10 nf (size 0603) r22 = 66.5 ? 10 (size 0603) r4, r6, r5, c4, c7 c9, c3, c8, c10 power supply decoupling. r4, r6, r5 = 0 ? (size 0603) c4, c7 c9 = 0.1uf (size 0603) c3, c8, c10 = 100 pf (size 0603) r8, sw1 output disable interface. the output st age of the adl5390 is disabled by applying a high voltage to the dsop pin by moving sw1 to position b. the output stage is enabled moving sw1 to position a. the output disable function can also be exercised by applyi ng an external high or low voltage to the dsop sma connector with sw1 in position a. r8 = 10 k? (size 0603) sw1 = spdt (position a, output enabled)
adl5390 rev. 0 | page 21 of 24 04954-040 c12 (open) c11 (open) c8 100pf vp c7 0.1 f r5 0 ? vp r4 0 ? c3 100pf c4 0.1 f b a sw1 r8 10k ? vp test point gnd test point dsop ibbm ibbp vp r14 4k ? r11 2k ? r15 44k ? c15 0.1 f w4 r21 0 ? r19 0 ? w3 r20 0 ? r9 (open) r7 (open) c19 0.1 f qbbp qbbm vp r12 4k ? r10 2k ? r13 44k ? c16 0.1 f w2 r17 0 ? r16 0 ? w1 r18 0 ? r1 (open) r3 (open) c20 0.1 f l2 0 ? c5 10nf rfin_q r22 66.5 ? l1 0 ? c2 10nf rfin_i r2 66.5 ? c1 10nf c6 10nf l4 120nh l3 120nh c14 0.1 f c10 100pf c9 0.1 f vp c17 10nf c18 10nf rfop r6 0 ? 15 3 4 t1 etc1-1-13 (m/a-com) ibbp ibbm vps2 dsop qbbp qbbm vprf cmrf inmi ipmq cmop cmop rfom rfop q f l p qflm cmop cmop cmrf vprf iflp iflm adl5390 inpi inpq f i g u re 44. ev aluat i on b o a r d s c h e m a t i c
adl5390 rev. 0 | page 22 of 24 04954-041 f i g u re 45. co mpon ent sid e lay o ut 04954-042 f i g u re 46. co mpon ent sid e s ilk s c r e e n
adl5390 rev. 0 | page 23 of 24 outline dimensions 1 24 6 7 13 19 18 12 2.45 2.30 sq * 2.15 0.60 max 0.50 0.40 0.30 0.30 0.23 0.18 2.50 ref 0.50 bsc 12 max 0.80 max 0.65 typ 0.05 max 0.02 nom 1.00 0.85 0.80 seating plane pin 1 indicator top view 3.75 bsc sq 4.00 bsc sq pin 1 indicator 0.60 max coplanarity 0.08 0.20 ref 0.23 min exposed pa d (bo tt om view) * compliant to jedec standards mo-220-vggd-2 except for exposed pad dimension f i gure 47. 2 4 -l ead l e ad f r a m e ch ip s c a l e p a ck ag e [lfcs p ] 4 4 m m b o dy (c p - 2 4 - 2 ) di me nsio ns sho w n i n mi ll im e t e r s ordering guide m o d e l s t e m p e r a t u r e r a n g e p a c k a g e d e s c r i p t ion package option ord e r mu ltiple adl5390acpz- wp 1 , 2 ?40c to +85c 24-lead lead fr am e chip scale package (lfcsp) cp-24-2 64 adl5390acpz- reel7 1 ?40c to +85c 24-lead lead fr ame chip scale package (lfcsp) cp-24-2 1,500 adl5390-eva l evaluation boar d 1 1 z = pb-free part. 2 wp = wa f fle pa ck.
adl5390 rev. 0 | page 24 of 24 notes ? 2004 a n alo g devic e s, inc. all rig h ts res e rve d . t r ade m arks a n d re g i s - tered trade m arks are the property of their respective owners . d04954C0C 10/04(0)

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