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zero-drift, single-supply, rail-to-rail input/output operational amplifier ad8628/AD8629 rev. c in fo rmation furn ished by an alog d e v i c e s is believed to be accurate and reliable. how e ver, n o resp on sibili ty is assume d b y a n alog de vices fo r its use, nor for an y i n fri n geme nt s of p a t e nt s or ot h e r ri ght s o f th ird parties th at may result fro m its use . s p ecificatio n s subj ec t to ch an g e witho u t n o tice. no licen s e is g r an te d by implicati o n or ot herwi s e u n der a n y p a t e nt or p a t e nt ri ghts of analog de v i ces. trademarks 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 lowest auto-ze r o amplifier noise low offset voltage: 1 v input offset dri f t: 0.002 v/c rail-to-rail input and output s w ing 5 v singl e-supp ly operation high gain, cmr r , and psrr: 1 20 db very low input bias current: 100 pa max low supply current: 1.0 m a overload recovery time: 10 s no external components required applic ati o ns automotive se nsors pressure and p o sition sensors strain gage am plifiers medical instr u mentation thermocouple amplifiers precision current sensing photodiode amplifier pin c o nfig uratio ns out 1 v? 2 +in 3 v+ 5 ?i n 4 ad8628 top view (not to scale) 02735-001 f i g u re 1. 5-l e ad t s o t (u j-5) and 5-l e ad s o t - 2 3 (rt - 5) nc 1 ?i n 2 +in 3 v? 4 nc 8 v+ 7 out 6 nc 5 nc = no connect ad8628 top view (not to scale) 02735-002 f i g u re 2. 8-l e ad so ic (r-8) out a 1 ?in a 2 +in a 3 v? 4 v+ 8 out b 7 ?in b 6 +in b 5 AD8629 top view (not to scale) 02735-063 f i g u re 3. 8-l e ad so ic (r-8) o ut a 1 ?in a 2 +in a 3 v? 4 v+ 8 out b 7 ?in b 6 +in b 5 AD8629 top view (not to scale) 02735-064 f i g u re 4. 8-l e ad m s op (r m - 8) general description this n e w b r e e d o f a m plif ier has u l t r a l o w o f fs et, dr if t, a nd b i as c u r r en t. th e ad8628/AD8629 a r e wide bandwid th a u t o -zer o a m plif iers fe a t u r in g ra i l -t o-ra i l in p u t an d o u t p ut sw in gs and lo w n o is e . o p era t ion is f u l l y sp e c if i e d f r o m 2.7 v to 5 v sin g le su p p ly ( 1 . 3 5 v to 2 . 5 v d u a l su p p ly ) . the ad8628/AD8629 p r o v ide ben e f i ts p r e v io u s l y f o un d o n l y in exp e n s i v e a u t o - z er o i n g o r ch o p p e r - st a b i l i z e d am plif iers. u s ing analog d e vi ces ne w t o p o log y , th es e zer o -dr i f t a m plif iers co m b in e lo w co s t wi th hig h acc u rac y a n d lo w no is e . (n o ext e r - nal ca p a c i t o r is r e q u ir ed .) i n addi tion, the ad8 628/AD8629 gr ea tl y r e d u ce th e d i gi tal sw i t ch i n g n o i s e f o un d i n m o st c h o p pe r - sta b ilized a m p l i f i e r s . w i t h a n of f s e t vo lt age of on ly 1 v , d r i f t of l e ss t h an 0.005 v/c, and n o is e o f o n l y 0.5 v p-p (0 h z t o 10 h z ), th e ad8628 /AD8629 a r e p e r f ec tl y s u i t ed f o r a p p l ica t io n s in whic h er r o r so u r ces ca nn o t be to lera t e d . p o si tio n an d p r es s u r e s e n s o r s, me di ca l e q ui pm e n t, and st r a i n ga ge am plif iers b e n e f i t g r e a t l y f r o m n e a r l y zer o dr if t o v er t h eir o p er a t in g t e m p era t ur e ra n g e . m a n y syst em s c a n t a k e ad va n t a g e o f th e ra il-t o-ra il in p u t a nd o u t p u t swin gs p r o v ided b y th e ad8628/AD8629 t o r e d u c e in p u t b i asi n g com p lexi ty and m a ximi ze snr . the ad8628/AD8629 a r e s p ec if ied f o r th e ext e n d e d ind u s t r i al t e m p era t ur e ra ng e (?40c t o +125c). the ad8 628 is a v a i la b l e in tin y t s ot -2 3, so t - 23, and th e p o p u la r 8-le ad na r r o w so i c p l as tic p a cka g es . th e AD8629 is a v a i la b l e in t h e s t anda r d 8-lead na r r o w soi c a nd msop pla s t i c p a cka g es.
ad8628/AD8629 rev. c | page 2 of 20 table of contents specifications ..................................................................................... 3 electrical characteristics ............................................................. 3 absolute maximum ratings ............................................................ 5 esd caution .................................................................................. 5 typical performance characteristics ............................................. 6 functional description .................................................................. 14 1/f noise ....................................................................................... 14 peak-to-peak noise .................................................................... 15 noise behavior with first-order low-pass filter .................. 15 total integrated input-referred noise for first-order filter 15 input overvoltage protection ................................................... 16 output phase reversal ............................................................... 16 overload recovery time .......................................................... 16 infrared sensors .......................................................................... 17 precision current shunts .......................................................... 18 output amplifier for high precision dacs ........................... 18 outline dimensions ....................................................................... 19 ordering guide .......................................................................... 20 revision history 10/04data sheet changed from rev. b to rev. c updated formatting ...........................................................universal added AD8629....................................................................universal added soic and msop pin configurations ............................... 1 added figure 48.............................................................................. 13 changes to figure 62...................................................................... 17 added msop package ................................................................... 19 changes to ordering guide .......................................................... 20 10/03data sheet changed from rev. a to rev. b changes to general description .................................................... 1 changes to absolute maximum ratings ....................................... 4 changes to ordering guide ............................................................ 4 added tsot-23 package............................................................... 15 6/03data sheet changed from rev. 0 to rev. a changes to specifications ................................................................ 3 changes to ordering guide ............................................................ 4 change to functional description ............................................... 10 updated outline dimensions ....................................................... 15 10/02revision 0: initial version
ad8628/AD8629 rev. c | page 3 of 20 specifications electrical characteristics v s = 5.0 v, v cm = 2.5 v, t a = 25c, unless otherwise noted. table 1. parameter symbol conditions min typ max unit input characteristics offset voltage v os 1 5 v ?40c t a +125c 10 v input bias current i b 30 100 pa ?40c t a +125c 1.5 na input offset current i os 50 200 pa ?40c t a +125c 250 pa input voltage range 0 5 v common-mode rejection ratio cmrr v cm = 0 v to 5 v 120 140 db ?40c t a +125c 115 130 db large signal voltage gain 1 a vo r l = 10 k?, v o = 0.3 v to 4.7 v 125 145 db ?40c t a +125c 120 135 db offset voltage drift ?v os /?t ?40c t a +125c 0.002 0.02 v/c output characteristics output voltage high v oh r l = 100 k? to ground 4.99 4.996 v ?40c t a +125c 4.99 4.995 v r l = 10 k? to ground 4.95 4.98 v ?40c t a +125c 4.95 4.97 v output voltage low v ol r l = 100 k? to v+ 1 5 mv ?40c t a +125c 2 5 mv r l = 10 k? to v+ 10 20 mv ?40c t a +125c 15 20 mv short-circuit limit i sc 25 50 ma ?40c t a +125c 40 ma output current i o 30 ma ?40c t a +125c 15 ma power supply power supply rejection ratio psrr v s = 2.7 v to 5.5 v ?40c t a +125c 115 130 db supply current/amplifier i sy v o = 0 v 0.85 1.1 ma ?40c t a +125c 1.0 1.2 ma input capacitance differential c in 1.5 pf common-mode 10 pf dynamic performance slew rate sr r l = 10 k? 1.0 v/s overload recovery time 0.05 ms gain bandwidth product gbp 2.5 mhz noise performance voltage noise e n p-p 0.1 hz to 10 hz 0.5 v p-p e n p-p 0.1 hz to 1.0 hz 0.16 mv p-p voltage noise density e n f = 1 khz 22 nv/hz current noise density i n f = 10 hz 5 fa/hz 1 gain testing is highly dependent upon test bandwidth.
ad8628/AD8629 rev. c | page 4 of 20 v s = 2.7 v, v cm = 1.35 v, v o = 1.4 v, t a = 25c, unless otherwise noted. table 2. parameter symbol conditions min typ max unit input characteristics offset voltage v os 1 5 v ?40c t a +125c 10 v input bias current i b 30 100 pa ?40c t a +125c 1.0 1.5 na input offset current i os 50 200 pa ?40c t a +125c 250 pa input voltage range 0 5 v common-mode rejection ratio cmrr v cm = 0 v to 2.7 v 115 130 db ?40c t a +125c 110 120 db large signal voltage gain a vo r l = 10 k? , v o = 0.3 v to 2.4 v 110 140 db ?40c t a +125c 105 130 db offset voltage drift ?v os /?t ?40c t a +125c 0.002 0.02 v/c output characteristics output voltage high v oh r l = 100 k? to ground 2.68 2.695 v ?40c t a +125c 2.68 2.695 v r l = 10 k? to ground 2.67 2.68 v ?40c t a +125c 2.67 2.675 v output voltage low v ol r l = 100 k? to v+ 1 5 mv ?40c t a +125c 2 5 mv r l = 10 k? to v+ 10 20 mv ?40c t a +125c 15 20 mv short-circuit limit i sc 10 15 ma ?40c t a +125c 10 ma output current i o 10 ma ?40c t a +125c 5 ma power supply power supply rejection ratio psrr v s = 2.7 v to 5.5 v ?40c t a +125c 115 130 db supply current/amplifier i sy v o = 0 v 0.75 1.0 ma ?40c t a +125c 0.9 1.2 ma input capacitance differential c in 1.5 pf common-mode 10 pf dynamic performance slew rate sr r l = 10 k? 1 v/s overload recovery time 0.05 ms gain bandwidth product gbp 2 mhz noise performance voltage noise e n p-p 0.1 hz to 10 hz 0.5 v p-p voltage noise density e n f = 1 khz 22 nv/hz current noise density i n f = 10 hz 5 fa/hz
ad8628/AD8629 r e v. c | pa ge 5 o f 2 0 absolute maximum ratings table 3. p a r a m e t e r s r a t i n g s supply voltage 6 v input voltage gnd ? 0.3 v to v s? + 0.3 v differential input voltage 1 5.0 v output short-ci rcuit durati on to gnd indefinite storage temperature range r, rm, rt, uj pa ckag es ?65c to +150c operating tem p erature range ?40c to +125c j u nction temperature range r, rm, rt, uj pa ckag es ?65c to +150c lead temperature range (sol dering, 60 s ) 300c 1 dif f e rential input vol t age i s l imited to 5 v or the s u pp l y vol t age, whichever is le ss . s t r e s s es a b o v e t h os e lis t e d u n de r a b s o l u t e m a xi m u m r a t i n g s ma y c a us e p e r m a n en t dama ge t o t h e de vice . this is a s t r e s s r a t i ng o n ly ; f u nc t i on a l op e r a t i o n of t h e d e v i c e a t t h e s e or a n y o t h e r con d i t io ns a b o v e t h os e list e d i n t h e o p era t io nal s e c t io n s o f t h is sp e c if ic a t io n is n o t i m pli e d . e x p o sur e t o a b s o l u t e max i m u m ra t i ng co ndi t i on s fo r ex ten d e d p e r i o d s ma y a f fe c t de vice r e l i ab i l i t y . table 4. therm a l characteristics package type ja 1 jc unit 5-lead tsot-23 (uj-5) 207 61 c/w 5-lead sot-23 (rt-5) 230 146 c/w 8-lead soic (r- 8 ) 158 43 c/w 8-lead msop (rm-8) 190 44 c/w 1 ja is s p e c if i e d f o r wo rs t-cas e co nd itio ns , that is , ja i s spe c i f i e d for t h e devi c e s o ld ered in a circuit board for surfac e-mo unt pack age s . esd caution esd (electrostatic discharge) sensitive device. ele c tros tatic charg e s as high as 4000 v readily accumulate on the human body and test eq uipment and can discharge wi thout 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.
ad8628/AD8629 r e v. c | pa ge 6 o f 2 0 typical perf orm ance cha r acte ristics input offset voltage ( v) numbe r of amp l ifie rs 180 160 140 120 100 80 60 40 20 0 ?2.5 ?1.5 ?0.5 0.5 1.5 2.5 02735-003 v s = 2.7v t a = 25 c f i g u re 5. input o f f s et v o lt ag e d i s t ribu t i on at 2 . 7 v +85c +25 c ?4 0 c v s = 5v input common-mode voltage (v) inp u t bias curre nt (pa) 60 40 50 30 10 20 0 01 2 3 4 5 02735-004 6 f i gure 6. input bias c u rrent vs. input common-mod e v o lt age at 5 v 150c 125c input common-mode voltage (v) inp u t bias curre nt (pa) 1500 500 1000 0 ?1000 ? 500 ?1500 01 2 3 4 5 02735-005 6 v s = 5v f i gure 7. input bias c u rrent vs. input common-mod e v o lt age at 5 v input offset voltage ( v) numbe r of amp l ifie rs 100 80 90 60 70 40 50 10 20 30 0 ?2.5 ?1.5 ?0.5 0.5 1.5 2.5 02735-006 v s = 5v v cm = 2.5v t a = 25 c f i g u re 8. input o f f s et v o lt ag e d i s t ribu t i on at 5 v v s = 5v t a = ? 40 c to +125 c tcvos (nv/ c) numbe r of amp l ifie rs 7 6 5 4 3 2 1 0 0 2 4 68 10 02735-007 f i gure 9. input o ffs et v o lt age d r if t v s = 5v t a = 25 c source sink load current (ma) output voltage (mv) 1k 100 10 1 0.1 0.01 0.0001 0.001 0.1 0.01 1 1 0 02735-008 f i gure 1 0 . o u tput v o l t a g e to sup p ly r a i l v s . l oad cu rrent at 5 v
ad8628/AD8629 r e v. c | pa ge 7 o f 2 0 v s = 2.7v source sink load current (ma) output voltage (mv) 1k 100 10 1 0.1 0.01 0.0001 0.001 0.1 0.01 1 1 0 02735-009 f i g u re 11. o u t p ut v o lt ag e t o su p p ly r a i l v s . l oad cu rrent at 2 . 7 v v s = 5v v cm = 2.5v t a = ? 40 c to +150 c temperature ( c) inp u t bias curre nt (pa) 1500 1150 900 450 100 0 ?50 0 25 ? 2 5 5 0 7 5 100 125 150 175 02735-010 f i gure 12. input b i a s current v s . t e mpe r ature t a = 25 c 5v 2.7v temperature ( c ) s u p p l y curre nt ( a) 1250 1000 750 500 250 0 ?50 0 50 150 100 200 02735-011 f i gure 13. sup p l y current v s . t e mper at ur e t a = 25 c supply voltage (v) s u p p l y curre nt ( a) 1000 800 600 400 200 0 01 2 4 5 36 02735-012 f i gure 14. sup p l y current v s . sup p ly v o ltag e v s = 2.7v c l = 20pf r l = m = 52.1 frequency (hz) open- l oop gain ( d b) 70 60 50 40 30 20 0 ?10 ?20 10 ?30 10k 100k 1m 10m 02735-013 45 90 135 180 225 0 ph a se sh ift ( d egrees) f i gure 15. o p en-l oop g a in and phase vs . f r equenc y v s = 5v c l = 20pf r l = m = 52.1 frequency (hz) open- l oop gain ( d b) 70 60 50 40 30 20 0 ?10 ?20 10 ?30 10k 100k 1m 10m 02735-014 45 90 135 180 225 0 ph a se sh ift ( d egrees) f i gure 16. o p en-l oop g a in and phase vs . f r equenc y
ad8628/AD8629 r e v. c | pa ge 8 o f 2 0 frequency (hz) closed- l oop gain ( d b) 70 60 50 40 30 20 0 ?10 ?20 10 ?30 1k 10k 100k 1m 10m 02735-015 v s = 2.7v c l = 20pf r l = 2k ? a v = 100 a v = 10 a v = 1 f i g u re 17. cl os ed-l oop g a in v s . f r equ e nc y at 2. 7 v frequency (hz) closed- l oop gain ( d b) 70 60 50 40 30 20 0 ?10 ?20 10 ?30 1k 10k 100k 1m 10m 02735-016 v s = 5v c l = 20pf r l = 2k ? a v = 100 a v = 10 a v = 1 f i g u re 18. cl os ed-l oop g a in v s . f r equ e nc y at 5 v frequency (hz) outp ut imp e dance ( ? ) 300 270 240 210 180 150 90 60 30 120 0 100 1k 10k 100k 1m 10m 100m 02735-017 v s = 2.7v a v = 100 a v = 10 a v = 1 f i g u re 19. o u t p ut imped a nce v s . f r eq uenc y at 2. 7 v frequency (hz) outp ut imp e dance ( ? ) 300 270 240 210 180 150 90 60 30 120 0 100 1k 10k 100k 1m 10m 100m 02735-018 v s = 5v a v = 100 a v = 10 a v = 1 f i gure 20. o u tput imped a nce v s . f r eq uenc y at 5 v v s = 1.35v c l = 300pf r l = a v = 1 time (4 s/div) volta ge ( 500mv/d i v) 02735-019 f i g u re 21. lar g e s i g n al t r ans i ent r e s p ons e at 2 . 7 v v s = 2.5v c l = 300pf r l = a v = 1 time (5 s/div) volta ge ( 1 v/d i v) 02735-020 f i g u re 22. lar g e s i g n al t r ans i ent r e s p ons e at 5 v
ad8628/AD8629 r e v. c | pa ge 9 o f 2 0 v s = 1.35v c l = 50pf r l = a v = 1 time (4 s/div) volta ge ( 50mv/d i v) 02735-021 f i g u re 23. sm a ll s i g n al t r ans i ent r e s p ons e at 2 . 7 v v s = 2.5v c l = 50pf r l = a v = 1 time (4 s/div) volta ge ( 50mv/d i v) 02735-022 f i g u re 24. sm a ll s i g n al t r ans i ent r e s p ons e at 5 v capacitive load (pf) overshoot ( % ) 100 90 80 70 60 50 30 20 10 40 0 1 1 0 100 1k 02735-023 v s = 1.35v r l = 2k ? t a = 25 c os ? os+ f i g u re 25. sm a ll s i g n al o v ers h oot v s . l oad cap a c i t a n c e at 2. 7 v capacitive load (pf) overshoot ( % ) 80 70 60 50 30 20 10 40 0 1 1 0 100 1k 02735-024 v s = 2.5v r l = 2k ? t a = 25 c os? os+ f i g u re 26. sm a ll s i g n al o v ers h oot v s . l oad cap a c i t a n c e at 5 v time (2 s/div) voltage (v) v out 0v 0v v in 02735-025 v s = 2.5v a v = ? 50 r l = 10k ? c l = 0 ch1 = 50mv/div ch2 = 1v/div f i gure 27. p o sit i ve o v er volt age r eco v e r y time (10 s/div) voltage (v) v out 0v 0v v in 02735-026 v s = 2.5v a v = ? 50 r l = 10k ? c l = 0 ch1 = 50mv/div ch2 = 1v/div f i g u re 28. neg a t i ve o v er volt ag e r e c o v e r y
ad8628/AD8629 rev. c | page 10 of 20 time (200 s/div) volta ge ( 1 v/d i v) 02735-027 v s = 2.5v v in = 1khz @ 3v p-p c l = 0pf r l = 10k ? a v = 1 f i gure 29. no p h as e r e vers a l frequency (hz) cmrr (db) 140 120 100 80 60 40 0 ?20 ?40 20 ?60 100 1k 10k 100k 1m 10m 02735-028 v s = 2.7v f i g u re 30. c m r r v s . f r eq uenc y at 2 . 7 v frequency (hz) cmrr (db) 140 120 100 80 60 40 0 ?20 ?40 20 ?60 100 1k 10k 100k 1m 10m 02735-029 v s = 5v fi g u r e 3 1 . c m r r v s . fr e q u e n c y a t 5 v frequency (hz) p s rr (db) 140 120 100 80 60 40 0 ?20 ?40 20 ?60 100 1k 10k 100k 1m 10m 02735-030 v s = 1.35v +psrr ?psrr fi g u r e 3 2 . p s r r v s . fr e q u e n c y frequency (hz) p s rr (db) 140 120 100 80 60 40 0 ?20 ?40 20 ?60 100 1k 10k 100k 1m 10m 02735-031 v s = 2.5v +psrr ?psrr fi g u r e 3 3 . p s r r v s . fr e q u e n c y frequency (hz) output swing (v p-p) 3.0 2.5 2.0 1.5 1.0 0.5 0 100 1k 10k 100k 1m 02735-032 v s = 2.7v r l = 10k ? t a = 25 c a v = 1 f i g u re 34. m a x i mu m o u t p ut swi n g v s . f r equenc y
ad8628/AD8629 rev. c | page 11 of 20 frequency (hz) output swing (v p-p) 5.5 2.5 3.0 3.5 4.0 4.5 5.0 2.0 1.5 1.0 0.5 0 100 1k 10k 100k 1m 02735-033 v s = 5v r l = 10k ? t a = 25 c a v = 1 f i g u re 35. m a x i mu m o u t p ut swi n g v s . f r equenc y at 5 v time ( s) voltage ( v) 0.60 0.45 0.30 0.15 ? 0.15 ? 0.30 ? 0.45 0 ? 0.60 01 2 3 45 6 7 8 9 1 0 02735-034 v s = 2.7v f i g u re 36. 0. 1 h z t o 10 h z no is e at 2.7 v time ( s) voltage ( v) 0.60 0.45 0.30 0.15 ? 0.15 ? 0.30 ? 0.45 0 ? 0.60 01 2 3 45 6 7 8 9 1 0 02735-035 v s = 5v f i g u re 37. 0. 1 h z t o 10 h z no is e at 5 v frequency (khz) v o ltage nois e de ns ity (nv / hz) 120 105 90 75 45 30 15 60 0 0 0.5 1.0 1.5 2.0 2.5 02735-036 v s = 2.7v noise at 1khz = 21.3nv f i g u re 38. v o lt ag e nois e d e ns i t y at 2. 7 v f r o m 0 h z t o 2.5 k h z frequency (khz) volta ge n o ise d e n s ity ( n v/ hz) 120 105 90 75 45 30 15 60 0 0 5 10 15 20 25 02735-037 v s = 2.7v noise at 10khz = 42.4nv f i g u re 39. v o lt ag e nois e d e ns i t y at 2. 7 v f r o m 0 h z t o 25 k h z frequency (khz) v o ltage nois e de ns ity (nv / hz) 120 105 90 75 45 30 15 60 0 0 0.5 1.0 1.5 2.0 2.5 02735-038 v s = 5v noise at 1khz = 22.1nv f i g u re 40. v o lt ag e nois e d e ns i t y at 5 v f r o m 0 h z t o 2.5 k h z
ad8628/AD8629 rev. c | page 12 of 20 frequency (khz) v o ltage nois e de ns ity (nv / hz) 120 105 90 75 45 30 15 60 0 0 5 10 15 20 25 02735-039 v s = 5v noise at 10khz = 36.4nv f i g u re 41. v o lt ag e nois e d e ns i t y at 5 v f r o m 0 h z t o 25 k h z frequency (khz) v o ltage nois e de ns ity (nv / hz) 120 105 90 75 45 30 15 60 0 05 02735-040 1 0 v s = 5v f i g u re 42. v o lt ag e nois e v s = 2.7v to 5v t a = ? 40 c to +125 c temperature ( c) pow e r su pply r e jec t ion ( d b ) 150 130 120 140 110 100 90 60 70 80 50 ?50 0 25 ? 2 5 5 0 7 5 100 125 02735-041 f i gure 43. p o wer s u p p ly rej e c t ion vs. t e mp er ature temperature ( c) outp ut s h ort-circuit curre nt (ma) 150 100 50 0 ?50 ?100 ?5 0 2 5 5 0 7 5 0 ?25 100 125 150 175 02735-042 v s = 2.7v t a = ? 40 c to +150 c i sc ? i sc + f i gure 4 4 . o u tput shor t- ci r c ui t c u rrent vs . t e m p er a t ur e temperature ( c) outp ut s h ort-circuit curre nt (ma) 150 100 50 0 ?50 ?100 ?5 0 2 5 5 0 7 5 0 ?25 100 125 150 175 02735-043 v s = 5v t a = ? 40 c to +150 c i sc ? i sc + f i gure 4 5 . o u tput shor t- ci r c ui t c u rrent vs . t e m p er a t ur e temperature ( c) output-to-rail voltage (mv) 1k 100 10 1 0.10 ?5 0 2 5 5 0 7 5 0 ?25 100 125 150 175 02735-044 v s = 5v v cc ? v oh @ 1k ? v cc ? v oh @ 10k ? v cc ? v oh @ 100k ? v ol ? v ee @ 1k ? v ol ? v ee @ 10k ? v ol ? v ee @ 100k ? f i g u re 46. o u t p ut -to - ra il v o ltage v s . t e mper atur e
ad8628/AD8629 rev. c | page 13 of 20 temperature ( c) output-to-rail voltage (mv) 1k 100 10 1 0.10 ?5 0 2 5 5 0 7 5 0 ?25 100 125 150 175 02735-045 v s = 2.7v v cc ? v oh @ 1k ? v cc ? v oh @ 10k ? v cc ? v oh @ 100k ? v ol ? v ee @ 1k ? v ol ? v ee @ 10k ? v ol ? v ee @ 100k ? f i g u re 47. o u t p ut -to - ra il v o ltage v s . t e mper atur e frequency (hz) channel separation (db) 140 120 100 80 60 40 20 0 1k 10k 100k 1m 10m 02735-062 v out v in 28mv p-p ?2.5v +2.5v r1 10k ? v? v+ ? + v+ v? ab r2 100 ? v sy = 2.5v f i gur e 4 8 . ad86 29 cha n ne l se pa r a tion
ad8628/AD8629 rev. c | page 14 of 20 functional description the ad8628/AD8629 a r e sin g l e -s u p p l y , u l trahig h p r ecisio n ra i l -t o-ra i l in put a nd o u t p ut o p era t io na l am plif iers. th e ty p i c a l o f fs et v o l t a g e o f les s t h a n 1 v al lo ws t h es e am plif iers t o b e e a s i ly c o nf ig u r e d for hig h g a ins wi t h out r i sk of e x c e ss ive o u t p ut v o l t a g e e r r o rs . th e ext r e m e l y smal l t e m p era t ur e dr if t o f 2 nv/ c ens u r e s a minim u m o f o f fs et v o l t a g e e r r o r o v er t h eir en tir e t e m p era t ur e ra n g e o f ?40c t o +125c, makin g t h es e a m plif iers ide a l fo r a va r i ety o f s e n s i t i v e me asurem e n t a p plic a t ion s in ha rsh o p er a t in g en vir o n m e n ts. the ad8628/AD8629 ac hiev e a hig h deg r ee o f p r ecisio n t h r o ug h a p a ten t e d com b in a t ion o f a u to - z er o i ng a nd ch o p p i n g . this uniq ue t o p o log y al lo ws th e ad8628/ad86 29 t o ma in t a in t h eir lo w o f fs et v o l t a g e o v er a w i de t e m p er a t ur e ra n g e an d o v er th eir o p er a t in g lif e time . th e ad8628/AD8629 a l s o o p timize t h e noi s e a n d b a nd w i d t h ove r pre v i o u s ge ne r a t i on s of a u to - z e r o a m plif iers, o f ferin g t h e lo w e s t vol t a g e n o is e o f an y a u t o - z er o a m plif ier b y m o r e t h a n 50%. p r e v io us desig n s us e d ei t h er a u to-zer o i n g o r cho p p i n g t o add p r e c isio n t o t h e sp e c if ic a t ion s of a n a m plif ier . a u t o -z er o i n g r e s u l t s in lo w no is e energ y a t t h e a u t o - z er o i n g f r e q uen c y , a t t h e exp e n s e o f hig h er lo w-f r e q uen c y n o is e d u e t o al iasing o f w i d e b a nd noi s e i n to t h e a u to - z e r o e d f r e q u e nc y b a n d . c h o ppi ng r e s u l t s in lo w e r lo w-f r e q uen c y n o is e a t t h e exp e n s e o f la rg er n o is e energ y a t th e ch o p p i n g f r eq uen c y . the ad8628/AD8629 f a m i l y u s e b o t h a u to - z e r oi ng a n d c h o ppi ng i n a p a te nte d pi n g - p o ng ar r a nge m e n t to o b t a i n l o we r l o w - f r e q u e nc y noi s e to ge t h e r wi t h lo w e r en erg y a t t h e ch o p p i n g an d a u t o - z ero i n g f r e q u e nc i e s , m a x i m i z i ng t h e s i g n a l - t o - noi s e r a t i o ( s n r ) for t h e m a jo ri t y o f a p p l i c a t i o n s w i t h o u t th e n e e d f o r a d d i ti o n al f i l t er in g. t h e r e l a t i vely hig h clo c k f r e q uen c y o f 15 khz sim p lif i es f i l t er r e q u ir em e n ts for a wide , us ef u l , n o is e - f r e e b a ndwi d t h . the ad8628 is a m on g the f e w a u t o -zer o a m p l if iers o f f e r e d in t h e 5-le a d t s ot -23 p a cka g e . t h is p r o v ides a si g n if ica n t im p r o v emen t ov er t h e ac p a ram e t e rs o f t h e p r e v i o u s a u t o -zero a m p l if iers. th e ad8628/ad86 29 ha v e lo w n o is e o v er a r e la t i vely wide b a ndwi d t h (0 hz to 10 k h z) and can b e us e d w h er e t h e hig h e s t dc p r e c isio n i s r e q u ir e d . i n sys t em s w i t h sig n al ban d wid t h s o f f r o m 5 kh z t o 10 kh z, t h e ad8628/ AD8629 p r o v ide tr ue 16-b i t acc u ra c y , makin g th em the bes t c h o i ce fo r v e r y hig h r e s o l u tion sys t em s. 1/f noise 1/f n o is e , a l s o k n o w n as pin k no is e , is a ma j o r co n t r i b u t o r t o er r o rs in dc-co u ple d m e as ur e m en ts. this 1/f n o is e er r o r t e r m ca n b e in t h e ran g e o f s e v e ral v o r m o r e , an d , w h en am plif ie d wi t h t h e c l os ed-lo o p ga in o f th e cir c ui t, can sh o w u p as a la rg e out p ut of f s e t . f o r e x am pl e, w h e n an am pl i f i e r w i t h a 5 v p - p 1/f n o is e is conf igur ed f o r a ga in o f 1,000, i t s ou t p u t has 5 mv o f er r o r d u e t o th e 1 / f n o is e . b u t th e ad8628/AD8629 e l imina t e 1/f n o is e in t e r n al l y , a n d t h er eb y g r e a t l y r e d u ce o u t p ut er r o rs. the i n t e r n a l e l i m ina t io n o f 1/f n o is e is acco m p lish e d as fol l o w s. 1/f n o is e a p p e a r s as a s l o w l y va r y in g o f fs et t o ad8628/AD8629 i n put s . a u to - z e r oi ng c o r r e c t s a n y d c or l o w f r e q u e nc y of f s e t . ther efo r e , t h e 1 / f n o is e com p on e n t is es s e n t ial l y r e m o v e d , lea v in g t h e ad8 628/AD8629 f r e e o f 1/f n o is e . on e o f t h e b i g g es t ad va n t a g es t h a t t h e ad8628 /AD8629 b r in g t o sys t em s a p pli c a t ion s o v er co m p et i t i v e a u t o - z er o a m plif iers i s t h e i r ve r y l o w noi s e. t h e c o m p ar i s on show n i n f i g u re 4 9 indic a tes an i n pu t-r e fer r e d n o is e den s i t y o f 19.4 nv/ h z a t 1 kh z f o r th e ad8628, whic h is m u c h bet t er tha n t h e l t c2050 a nd lm c2001. the n o is e is f l a t f r o m dc t o 1.5 kh z, s l o w l y i n c r e a s i ng up to 2 0 k h z . t h e l o we r noi s e a t l o w f r e q u e nc y i s desira b l e w h er e a u t o - z er o a m pl i f iers a r e wide l y us e d . mk at 1khz for all 3 graphs frequency (khz) volta ge n o ise d e n s ity ( n v/ hz) 120 105 90 75 60 45 30 15 0 04 28 61 02735-046 0 1 2 ltc2050 (89.7nv/ hz) lmc2001 (31.1nv/ hz) ad8628 (19.4nv/ hz) f i gure 49. no ise s p ec tr a l d e ns it y of a d 86 2 8 v s . co mpeti t ion
ad8628/AD8629 rev. c | page 15 of 20 peak- t o- pe ak n o ise b e ca us e o f t h e p i n g - p o n g ac t i on b e twe e n a u t o - z er o i n g a nd c h o p p i ng, th e p e ak-t o - p e a k n o is e o f th e ad862 8/AD8629 is m u c h lo w e r tha n the co m p et i t io n. f i gur e 50 a nd f i gur e 51 sh o w t h is com p a r is o n . e n p-p = 0.5 v bw = 0.1hz to 10hz time (1s/div) voltage (0.5 v/d i v) 02735-047 f i gur e 5 0 . ad86 28 p e a k -to - p e a k noi s e e n p-p = 2.3 v bw = 0.1hz to 10hz time (1s/div) voltage (0.5 v/d i v) 02735-048 f i gur e 5 1 . l t c2 05 0 p e a k -to - p e a k noi s e noise behavior with first-order low-pass fil t er the ad8628 was sim u l a t e d as a lo w-p a s s f i l t er and th en co nf igur ed as sh o w n in f i gur e 52. th e b e ha vior o f th e ad8628 ma t c h e s t h e sim u la t e d da ta . i t was v e r i f i e d tha t n o is e is r o l l e d of f by f i r s t - ord e r f i lte r i n g . 470pf out 100k ? in 1k ? 02735-049 f i gure 52. t e s t c i rc uit: f i rs t- o r der l o w-p a s s f ilter 1 0 1 g a in and 3 kh z corn er f r equ e nc y frequency (hz) nois e (db) 50 45 40 35 30 25 15 10 5 20 0 0 3 0 6 0 100 90 80 70 50 40 20 10 02735-050 f i gure 5 3 . sim u la tio n t r ansfer f u nction o f the t e st c i rcui t frequency (khz) nois e (db) 50 45 40 35 30 25 15 10 5 20 0 0 3 0 6 0 100 90 80 70 50 40 20 10 02735-051 f i g u re 54. ac t u al t r ans f er f u nc t i on of t e s t ci r c u i t the m e as ur e d no is e s p e c t r um of t h e t e st cir c ui t s h o w s t h a t n o is e b e tw e e n 5 khz an d 45 khz is successf u l ly r o l l e d o f f b y t h e fi r s t - o r d e r fi l t e r . tot a l in tegrated i n p u t-referred n o ise for first-order filter f o r a f i rs t-o r der f i l t er , t h e t o t a l i n t e g r a t e d n o is e f r o m t h e ad8628 is lo w e r tha n the l t c2 050. 3db filter bandwidth (hz) r m s n o ise ( v) 10 1 0.1 10 100 10k 1k 02735-052 ltc2050 ad8551 ad8628 f i gure 55. 3 d b f ilte r bandwidth in hz
ad8628/AD8629 rev. c | page 16 of 20 input overvoltage protection al th o u g h the ad8628/AD8629 a r e ra il-t o-ra il in p u t am p l if iers, ca r e sh o u ld b e t a k e n t o ens u r e t h a t t h e p o t e n t ia l dif f er en ce b e tw e e n t h e i n pu ts do es n o t exc e e d t h e su p p ly v o l t a g e . u n der nor m a l ne g a t i ve fe e d b a c k op e r a t i n g c o nd i t i o ns , t h e a m pl i f i e r co r r e c ts i t s o u t p u t t o en s u r e t h a t t h e tw o i n p u ts a r e a t t h e s a me v o l t a g e . h o w e ve r , if ei t h er in pu t exce e d s ei t h er su p p l y ra i l b y m o r e than 0.3 v , la rg e c u r r en ts beg i n t o f l o w thr o ug h th e es d prote c t i on d i o d e s i n t h e a m pl i f i e r . th e s e di o d es a r e co n n e c te d b e t w e e n t h e i n p u ts a nd e a ch su p p ly ra il t o p r o t ect t h e in p u t tra n si st o r s a g a i n s t a n e l ectr os ta ti c d i sc h a r g e ev en t a n d a r e n o rm all y r e v e r s e - b i ase d . h o w e v e r , i f th e in p u t v o l t a g e exce e d s t h e s u p p l y v o l t a g e , t h es e es d dio d es can b e come fo r w a r d- b i as e d . w i t h ou t c u r r en t limi t i n g , excessi v e a m o u n t s o f c u r r en t co u l d f l o w t h r o ug h t h es e di o d es, ca usin g p e r m a n e n t dama ge t o t h e de vic e . i f in p u ts a r e sub j e c t t o ove r vo lt age, a p propr i a t e s e r i e s re s i stor s shou l d b e i n s e r t e d to limi t t h e dio d e c u r r en t to less t h a n 5 m a max i m u m. output phase reversal o u t p u t ph as e re vers a l o c c u rs in s o me am pl if iers w h en t h e i n p u t co mm o n - m o d e v o l t a g e ra n g e is exce e d e d . a s comm on- m o d e v o l t a g e is m o v e d o u tside o f t h e co mm o n - m o d e ra n g e , t h e output s of t h e s e am pl i f i e r s c a n s u d d e n l y j u m p i n t h e opp o s i t e dir e c t io n t o t h e s u p p l y ra i l . this is t h e r e s u l t o f t h e dif f er en t i al in p u t p a ir sh ut t i n g do w n , ca using a radic a l shif t i n g o f in t e r n a l v o lt ag e s t h at re s u lt s i n t h e e r r a t i c output b e h a v i or . the ad8628/AD8629 a m p l if iers ha v e been ca ref u l l y desig n ed to pre v e n t a n y outpu t p h a s e r e v e r s a l , prov i d e d t h a t b o t h i n pu t s a r e ma in t a i n e d wi t h in t h e s u p p l y v o l t a g es. i f o n e o r b o t h i n p u ts c o u l d e x c e e d e i t h e r su p p ly vol t age, a re s i stor shou l d b e p l ac e d i n s e r i es wi t h t h e i n p u t t o limi t t h e c u r r en t t o les s t h a n 5 ma. thi s en s u r e s t h a t t h e o u t p u t do es n o t r e v e rs e i t s phas e . overload recovery time m a n y a u to - z e r o am pl i f i e rs are p l ag u e d b y a l o n g ove r l o a d re c o ve r y t i me, of te n i n ms , d u e t o t h e c o m p l i c a t e d s e tt l i ng b e h a v i or of t h e i n te r n a l n u l l i n g l o op s af te r s a tu r a t i on of t h e o u t p u t s. th e ad8628/AD8629 ha v e been desig n e d s o tha t in t e r n a l s e t t ling o c c u rs wi t h in t w o clo c k c y cles a f t e r o u t p u t s a t u r a tion ha p p en s. this r e s u l t s in a m u c h sh o r t e r r e co v e r y ti m e , le s s th a n 10 s, wh en c o m p are d to ot he r a u to - z e r o a m p l if iers. th e wide ban d wid t h o f th e ad8628/AD8629 enhan c es p e r f o r ma nce w h e n t h e y a r e us e d t o dr i v e lo ads t h a t in j e c t t r a n sie n ts in t o t h e o u t p u t s. this is a co m m on si t u a t io n w h en an am plif ier is us e d t o dr iv e t h e in pu t o f s w i t ch e d ca p a c i t o r ad cs . time (500 s/div) voltage (v) v out 0v 0v v in 02735-053 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gure 56. p o sit i ve i n put o v er lo ad r eco ver y for the a d 8 6 28 time (500 s/div) voltage (v) v out 0v 0v v in 02735-054 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gure 57. p o sit i ve i n put o v er lo ad r eco ver y for l t c20 5 0 time (500 s/div) voltage (v) v out 0v 0v v in 02735-055 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gure 58. p o sit i ve i n put o v er lo ad r eco ver y for lmc2 00 1
ad8628/AD8629 rev. c | page 17 of 20 time (500 s/div) voltage (v) v out 0v 0v v in 02735-056 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gure 5 9 . neg a ti v e input o v erlo a d r e c o v e r y for the ad86 28 time (500 s/div) voltage (v) v out 0v 0v v in 02735-057 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gure 6 0 . neg a ti v e input o v erlo a d r e c o v e r y for l t c20 50 time (500 s/div) voltage (v) v out 0v 0v v in 02735-058 ch1 = 50mv/div ch2 = 1v/div a v = ? 50 f i gur e 6 1 . ne g a ti v e input o v e r lo a d r e c o v e r y for lmc2001 t h e re su lt s s h o w n i n fi g u re 5 6 to f i g u re 6 1 are su m m a r i z e d i n ta b l e 5 . table 5. o v erlo ad reco ver y ti me rodct ositive overlo ad recovery s egative o v erl o ad recovery s a d 8 6 2 8 6 9 l t c 2 0 5 0 6 5 0 2 5 , 0 0 0 l m c 2 0 0 1 4 0 , 0 0 0 3 5 , 0 0 0 infrare d s e nsors i n f r are d ( i r ) s e ns ors , p a r t i c u l arly t h e r mopi l e s , are i n c r e a s i ng l y bein g us ed in t e m p er a t ur e m e asur em en t f o r a p plica t ion s as w i d e - r a n g i n g a s au t o m o t i v e c l i m at e c o nt r o l , h u m a n e a r t h e r mo m e te rs , ho me i n su l a t i o n an a l y s i s , an d a u to mot i ve re p a i r dia g n o s t ics. th e r e la t i v e l y smal l o u t p u t sig n al o f th e s e n s o r deman d s hi g h g a in w i t h ver y lo w o f fs et vol t a g e a nd dr if t to a v o i d dc er r o rs. i f in t e rst a ge ac co u p lin g is us e d (f igur e 62), lo w o f fs et a nd dr i f t p r e v en ts t h e i n pu t a m plif ier s o u t p u t f r o m dr if t i n g clos e t o s a t u r a t i on. th e lo w in p u t b i as c u r r en ts gen e r a te mini ma l er r o rs f r om t h e s e ns or s output i m p e d a nc e. a s w i t h pre ssu re s e ns or s , t h e v e r y lo w a m plif ier dr if t wi t h t i me an d t e m p era t ur e e l imi - na t e s addi t i o n al er r o rs o n ce t h e t e m p era t ur e m e as ur emen t has b e e n cal i b r a t e d . the lo w 1/f n o i s e im p r o v es s n r fo r dc m e as ur e m en ts t a k e n o v er p e r i o d s o f t e n exce e d i n g 1/5 s. f i gur e 64 (sh o w s a cir c ui t t h a t c a n am plif y ac sig n a l s f r o m 100 v t o 300 v u p t o th e 1 v t o 3 v lev e l , wi t h ga in o f 10,000 f o r acc u ra t e a/d con v ersio n . 5v 100k ? 10k ? 5v 100 v ? 300 v 100 ? to bias voltage 10k ? f c 1.6hz ir detector 100k ? 10 f 1/2 AD8629 1/2 AD8629 02735-059 f i gure 62. a d 8 6 2 9 u s ed as p r ea mp lif i e r fo r th er m o pi le
ad8628/AD8629 rev. c | page 18 of 20 precisio n current shunts a p r e c isio n sh u n t c u r r en t s e ns or b e n e f i ts f r o m t h e uni q ue a t t r ib ut es o f a u to-zer o a m plif iers w h en us e d i n a dif f er en ci n g co nf igura t io n ( f igur e 63). s h un t c u r r en t s e ns ors a r e us ed in p r eci s i o n curr e n t so ur ce s f o r f eed ba ck co n t r o l s y s t e m s . th ey a r e a l s o us e d in a v a r i ety o f o t h e r a p plica t io n s , i n cludin g b a t t e r y f u el ga ug ing, las e r dio d e p o w e r m e a s ur e m en t and co n t r o l, t o r q ue f eed b a c k co n t r o l s i n e l ec tri c po w e r s t ee ri n g , a n d p r e c isio n p o w e r m e ter i n g . r s 0.1 ? suppl y i r l 100 ? 100k ? c 5v 100 ? 100k ? c e = 1,000 r s i 100mv/ma ad8628 02735-060 f i gure 63. l o w - sid e current s e ns i n g in s u c h ap p l i c at i o n s , i t i s d e s i r a b l e t o u s e a s h u n t w i t h v e r y l o w r e sist a n c e to mi nimi ze t h e s e r i es vol t a g e dr o p ; t h is mini mi zes was t e d p o w e r and al lo ws t h e me as ur emen t o f hig h c u r r en ts wi t h o u t s a vi n g p o w e r . a typ i ca l sh un t mig h t b e 0.1 ?. a t m e as ur e d c u r r en t val u es o f 1 a, t h e sh un t s o u t p u t sig n al is h u ndr e d s o f m v , o r e v en v , and a m plif ier er r o r s o ur ces a r e n o t cr i t ical . h o w e v e r , a t lo w m e as ured c u r r en t val u es in t h e 1 ma ra n g e , th e 100 v o u t p u t v o l t a g e o f th e sh un t deman d s a v e r y lo w o f fs et vol t age a nd dr if t to ma in t a i n a b s o l u te acc u r a c y . l o w i n p u t b i a s cu rr e n t s a r e al so n e ed ed , so th a t i n ject ed b i a s cu rr e n t do es n o t b e come a sig n if ic a n t p e r c en t a ge o f t h e m e a s ur e d c u r r en t. h i g h op en-lo o p gain, cmrr , and psrr al l he l p t o m a i n ta in th e o v e r all ci r c ui t a c c u ra c y . a s lo n g as th e ra t e o f cha n ge o f t h e c u r r en t is n o t to o fast, a n a u t o -z er o a m plif ier can be use d w i t h e x ce lle n t r e s u l t s. outpu t am plifier for high preci s ion dac s the ad8628/AD8629 a r e us ed as o u t p u t am p l if iers f o r a 16-b i t hig h p r e c ision d a c i n a un i p ola r co nf igura t ion. i n t h is cas e , t h e s e le c t e d o p am p n e e d s t o ha ve ver y l o w o f fs et v o l t a g e (t h e d a c ls b is 38 v w h en o p era t e d wi th a 2.5 v r e f e r e n c e) t o e l imina t e t h e n e e d fo r o u t p u t o f fs et t r im s. i n p u t b i as c u r r en t (typ i c al l y a f e w t e n s o f p i co a m p e r e s) m u s t als o be v e r y lo w , bec a us e i t gen e r a t e s an ad di t i o n a l zer o co de er r o r w h e n m u l t i p li e d b y t h e d a c output i m p e d a nc e ( a pprox i m a t ely 6 k ? ) . r a i l - t o - r a i l i n put a n d output prov i d e f u l l - s c a l e output w i t h ve r y li t t le er r o r . o u t p u t im p e dan c e of t h e d a c is con s t a n t and co de - indep e n d en t, b u t th e hig h in p u t im p e dan c e o f th e ad8628 / AD8629 minimizes gain er r o rs. the am p l if iers wide ban d wid t h a l s o s e r v es w e l l in t h is c a s e . t h e a m plif iers, w i t h s e t t ling t i m e o f 1 s, add an o t h e r tim e con s t a n t t o th e syst em, in cr e a sing the s e t t ling tim e o f th e o u t p u t . th e s e t t ling tim e o f th e ad5541 is 1 s. th e com b in e d s e t t lin g t i me is a p p r o x ima t e l y 1.4 s, as can b e d e r i ve d f r om t h e f o l l ow i n g e q u a t i on : () ( ) () 2 2 8628 ad t dac t total t s s s + = 03023-061 ad5541/ad5542 ad8628 dgnd *ad5542 only v dd r e f ( r e f * ) r ef s* out sclk din cs agnd 5v 2.5v unipolar output l dac* 0.1 f 10 f 0.1 f serial interface f i g u re 64. a d 8 6 2 8 u s ed as a n o u t p ut a m plif ier
ad8628/AD8629 rev. c | page 19 of 20 outline dimensions pin 1 1. 6 0 b s c 2. 8 0 b s c 1. 90 bs c 0. 95 b s c 13 4 5 2 0. 20 0. 08 0. 60 0. 45 0. 30 8 4 0. 50 0. 30 0. 10 m a x sea t i n g p l ane 1. 00 m a x 0. 9 0 0. 8 7 0. 8 4 compliant to jedec standards mo-193ab 2. 90 bs c f i g u re 65. 5-l e ad t h in s m al l o u t l ine t r ans i s t or p a ckag e [ t so t ] (uj-5) di me nsio ns sho w n i n mi ll im e t e r s pin 1 1. 60 b s c 2. 8 0 bs c 1. 9 0 bs c 0. 95 bs c 1 3 4 5 2 0. 22 0. 08 10 5 0 0. 5 0 0. 3 0 0 . 1 5 ma x sea t i n g pl a n e 1. 45 m a x 1. 30 1. 15 0. 90 2. 9 0 bs c 0. 60 0. 45 0. 30 compliant to jedec standards mo-178aa f i g u re 66. 5-l e ad s m a l l o u t l i n e t r ans i s t or p a ck ag e [so t - 23] (r t - 5) di me nsio ns sho w n i n mi ll im e t e r s 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5. 0 0 ( 0 . 1 968) 4. 8 0 ( 0 . 1 890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2440) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarit y 0.10 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-012aa f i g u re 67. 8-l e ad s t anda r d s m a l l o u t l ine p a ckag e [soic ] narro w b o dy (r -8) di me nsio ns sho w n i n mi ll im e t e r s a n d (i nc he s) 0.80 0.60 0.40 8 0 4 85 4.90 bsc pin 1 0.65 bsc 3.00 bsc seating plane 0.15 0.00 0.38 0.22 1.10 max 3.00 bsc coplanarity 0.10 0.23 0.08 compliant to jedec standards mo-187aa f i g u re 65. 8-l e ad s t anda r d s m a l l o u t l ine p a ckag e [m so p] (rm-8) di me nsio ns sho w n i n mi ll im e t e r s
ad8628/AD8629 rev. c | page 20 of 20 ordering guide model temperature r a nge package desc ri p t i o n p a c k a g e o p t i o n b r a n d i n g ad8628auj-r2 ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628auj-ree l ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628auj-ree l7 ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628aujz-r2 1 ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628aujz-reel 1 ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628aujz-r eel7 1 ?40c to +125c 5-lead tsot-23 uj-5 ayb ad8628ar ?40c to +125c 8-lead soic r-8 ad8628ar-reel ?40c to +125c 8-lead soic r-8 ad8628ar-reel 7 ?40c to +125c 8-lead soic r-8 ad8628arz 1 ?40c to +125c 8-lead soic r-8 ad8628arz-re e l 1 ?40c to +125c 8-lead soic r-8 ad8628arz-re el7 1 ?40c to +125c 8-lead soic r-8 ad8628art- r 2 ?40c to +125c 5-lead sot-23 rt-5 aya ad8628art- r ee l7 ?40c to +125c 5-lead sot-23 rt-5 aya ad8628artz-r2 1 ?40c to +125c 5-lead sot-23 rt-5 aya ad8628artz-r eel7 1 ?40c to +125c 5-lead sot-23 rt-5 aya AD8629arz 1 ?40c to +125c 8-lead soic r-8 AD8629arz-re e l 1 ?40c to +125c 8-lead soic r-8 AD8629arz-re el7 1 ?40c to +125c 8-lead soic r-8 AD8629armz-r2 1 ?40c to +125c 8-lead msop rm-8 a06 AD8629armz-reel 1 ?40c to +125c 8-lead msop rm-8 a06 1 z = pb-free part. ? 2004 analo g de vices, inc. all rights reserve d . tra d em arks and registered tra d ema r ks are the prop erty of their respective owners . c02735C0 C 10/04(c)

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