technical data IL145567 pcm codec - filter ordering information IL145567n pl ast i c dip t a = -40 to 8 5 c IL145567n is a one-chip pcm-cofidec which converts speech signal into digital form and backwards. the ic is design to operate in sy nchronous and asy nchronous sy stem s and is com p rised of: - reference generator; - filters on switching capacitors in transm ission and receipt channels ; - two operational am plifiers. the ic does signal com p anding under the a-low and full differential processing of analogue signals for reduction of noises. ty pical dissipated power is 40m w, under reduced power ? 1 m w at 5 v. gs x a n b l m c l k r / bclk r / f s x fs r mclk x bclk x pdn clksel vcc gnd v bb vf x i- vf x + comp vpo+ 4 8 vpo ? 4 vpi vf r o 8 active rc- filter of lf 5- poles active filter of l f 3-poles filter of hf ref e rence gener a tor r-d-to-a conver t er -d-to - a conver t er active rc- filter of lf 5-poles filter of l f storage/hol ding circuit mu lti- plexer receivin g latch receiving register shift register transm itti ng register control logic t s x dx d r note ? comp ? com p arator fi gure 1 ? b l ock di agram 1
IL145567 pin arrangement in package pins description pin symbol description 01 vpo+ out put of power oa 0 2 g n d com m on o u t p u t 03 vpo ? out put of power oa 04 vpi input of power oa 0 5 v f r o out put of di gi t a l si gnal audi o frequency 06 vcc suppl y 5 v 0 7 f s r input of receipt cy cle synchronisation 0 8 d r input of digital data receipt 0 9 b c l k r /clksel input of clock oscillator and selector of basic oscillator frequency 1 0 m c lk r /pdn input of m a in clock oscilla tor and underconsum ption control 11 mclkx input of m a in cloc k oscillator for transm ission 1 2 b c l k x input of clock oscillator for data transm ission (synchronised with mclk x ) 1 3 dx ou tp u t o f tran sm itted d i g ital d a ta 14 fsx input of t r ansm i ssi on cy cl e sy nchroni sat i on 15 tsx out put of t r ansm i ssi on t e m porary i n t e rval i ndi cat or 16 anb l input of feedback l oop cont rol 17 gsx out put of i nput oa 18 vfxi- input of transm itted audio frequency (inverting) 19 vfxi+ input of transm itted audio frequency (noninverting) 2 0 v bb suppl y m i nus 5 v 2
IL145567 supply source characteristics m i n m a x unit supply voltage of constant current v cc v bb 4.75 - 4.75 5.25 - 5.25 v c onsum pt i on power i n act i v e m ode (wi t hout l o ad) vpi = v bb ? 70 60 c onsum pt i on power i n sl eep m ode (wi t hout l o ad) vpi = v bb ? 5.0 3.0 mw digital signal strength (v cc = 5v 5%, v bb = -5v 5%, gnda = 0v) characteri sti c s s y m b o l mi n m a x uni t input voltage low v il - 0.6 input vol t a ge hi gh v ih 2 . 2 - out put vol t a ge low d x or x ts , i ol = 3.2m a v ol - 0.4 out put vol t a ge hi gh d x , i oh = -3.2m a i oh = -1.6m a v oh 2.4 v cc -0.5 - - v input current low gnda v in v cc i il -10 +10 input current hi gh gnda v in v cc i ih -10 +10 ou tp u t cu rren t in th e th ird state gnda d x v cc i oz -10 +10 mk a 3
IL145567 dynamic characteristics of digital signals (v cc = 5v 5%, v bb = -5v 5%, values of all signals ar e indicated relatively to gnda) characteri sti c s s y m b o l mi n t ypi c al m a x uni t freq u e n c ies o f m a in clo c k o s cillato rs mclk x or mclk r fm ? 1.544 2.048 ? m h z m i n wi dt h of hi gh or l o w pul se m c lk x or mclk r t w(m) 100 ? ns m i n wi dt h of hi gh or l o w pul se b c l k x or bclk r t w(b) 50 ns m i n wi dt h of l o w pul se fs x or fs r t w(fl) 5 0 n s rise tim e t r 5 0 n s fall tim e t f 5 0 n s r a t i ngs of dat a bi t sy nchroni sat i on b c l k x o r bclk r f b 128 4 0 9 6 k h z presettin g tim e o f fro m lo w bclk x t o hi gh m c lk r t su(brm) 5 0 ? n s preset t i ng t i m e from hi gh m c lk x to lo w bclk x t su(mfb) 2 0 n s ho ld in g tim e fro m lo w bclk x (bclk r ) t o hi gh fs x (fs r ) t h(bf) 2 0 n s preset t i ng t i m e from hi gh fs x (fs r ) to lo w bclk x (bclk r ) for l ong fram e s t su(fb) 80 n s delay tim e fro m h i g h bclk x t o set t i ng correct dat a on d x t d(bd) 2 0 1 4 0 n s delay tim e fro m h i g h bclk x to lo w x ts t d(bts) 20 1 4 0 n s del a y t i m e of i nhi bi t i on of out put dat a d x relativ ely to 8 th cl ock pul se b c l k x t d(zc) 50 1 4 0 n s ti m e of set t i ng correct dat a aft e r ent r y of si gnal s fs x or bclk x ( th e later o f th em ) t d(zf) 20 1 4 0 n s ti m e of preset t i ng dat a d r relativ ely to clo c k p u l se bclk r edge t su(db) 0 ? n s ho ld in g tim e fro m lo w bclk r t o swi t c hi ng off d r t h(bd) 5 0 n s preset t i ng t i m e from hi gh l e vel fs x (fs r ) to lo w lev e l bclk x (bclk r ) under sy nchroni sat i on st andard short fram e t su(f) 50 n s ho ld in g tim e fro m lo w lev e l bclk x (bclk r ) to lo w lev e l fs x (fs r ) for sy nchroni sat i on short fram e t h(f) 50 n s ho ld in g tim e fro m 2 nd peri od of l o w l e vel b c l k x (bclk r ) to lo w lev e l fs x (fs r ) for sy nchroni sat i on long fram e t h(bfi) ? 5 0 n s 4
IL145567 analogue electrical characteristics (v cc = 5v 5%, v bb = -5v 5%, vf x i - connected to gs x ) characteri sti c m i n t ypi c al m a x uni t input current (-2.5 v v in 2.5 v) vf x i + , vf x i - ? ? 0.2 m k a input i m pedance t o gnda at frequency 1 khz vf x i + , vf x i - 1 0 ? m o hm input capaci t a nce vf x i + , vf x i - ? 1 0 p f input bi as vol t a ge gs x op am p vf x i + , vf x i - ? 25 m v r a nge of i nput com m on-m ode vol t a ges vf x i + , vf x i - - 2.5 2.5 v am pl i f i cat i on rat i o wi t hout feedback gs x op am p (r load 10 kohm ) 7 5 ? db at t e nuat i on fact or of i n -phase com ponent s on out . vf x i + , vf x i - 6 5 db frequency band of uni t y gai n on out . gs x op am p (r load 10 kohm ) 1 0 0 0 k h z equi val e nt i nput noi se bet w een out . vf x i + , vf x i - and gs x - 2 0 db m load capacitance for gs x op am p 0 100 pf out put range of vol t a ges for gs x r load = 10 kohm relat. gnda r load = 600 ohm rel a t . gnda - 3 . 5 - 2.8 + 3.5 + 2.8 v output current (-2.8 v v out 2.8 v) gs x , vf r o 5.0 ? m a out put i m pedance on out . vf r o i n t h e frequency range from 0 t o 3.4 khz 1 ohm load capacitance for output vf r o 0 5 0 0 p f b i as vol t a ge for out put vf r o relatively to gnda ? 100 m v noi s e abat em ent on suppl y on t r ansm i ssi on (+) ? from 0 t o 100 khz; (-) - from 0 t o 100 khz; 45 45 db 5
IL145567 analogue transmission characteristics (v cc = 5 v 5%, v bb = -5 v 5%, gnda = 0 v, dbm 0 = 1.2276vrm s = 4 dbm wi t h l o ad 600 ohm , fs x = fs r = 8 khz, b c l k x = mclk x = 2.048 m h z at sy nchronous operat i on, vf x i - connected to gs x ) through channel channel ad channel da characteri sti c min m ax min m ax m i n m a x unit ch an g e o f am p lificatio n ratio (relativ ely to lev e l 0 d b m 0 on frequency 1.02 khz, t a = 25 , at v cc = 5v, v bb = -5v) ? ? -0.25 0 .25 - 0 . 2 5 0 . 2 5 db c h ange of am pl i f i cat i on rat i o dependi ng on t e m p erat ure 0 t o 70 ?40 t o + 85 ? ? ? ? ? ? 0.03 0.06 ? ? 0.03 0.06 db c h ange of am pl i f i cat i on rat i o dependi ng on suppl y vol t a ge (v cc = 5v, 5%, v bb = 5v 5%) ? ? ? 0 . 0 2 ? 0 . 0 2 d b c h ange of am pl i f i cat i on rat i o dependi ng on si gnal st rengt h (relativ ely to lev e l -1 0 d b m 0 o n frequency 1.02 khz) * from 3 t o ?40 db from ?40 t o ?50 db from ?50 t o ?55 db -0.4 -0.8 -1.6 0.4 0.8 1.6 -0.2 -0.4 -0.8 0.2 0.4 0.8 -0.2 -0.4 -0.8 -0.2 -0.4 -0.8 db tot a l di st ort i ons of si gnal at frequency 1 khz 3 db 0 0 - 30 db m 0 -40 db m 0 -45 db m 0 -55 db m 0 33 35 29 24 15 ? 3 3 36 30 25 15 ? 3 3 36 30 25 15 ? d b to tal d i sto r tio n s with p seudonoi se as per c c i tt g.714 -3 dbm 0 6 - 27 db m 0 -34 db m 0 -40 db m 0 -55 db m 0 27.5 35 33.1 28.2 13.2 ? 2 8 35.5 33.5 28.5 13.5 ? 2 8 . 5 36 34.2 30 15 ? d b noi s e of "si l e nt " channel (for t r ough channel and channel ad psophom et ri cal l y wei ght ed) ? -70 ? - 7 0 ? - 8 3 db m am plitude-frequency characteristi c (afc). (relativ ely to lev e l 0 d b m 0 at frequency 1.02 khz) * 15 hz 50 hz 60 hz 200 hz from 300 t o 3000 hz 3300 hz 3400 hz 4000 hz 4600 hz ? ? ? ? -0.3 -0.70 -1.6 ? ? -40 -30 -26 ? 0.3 0.3 0 -28 -60 ? ? ? -1.0 -0.15 -0.35 -0.8 ? ? -40 -30 -26 -0.4 0.15 0.15 0 -14 -32 -0.15 -0.15 -0.15 -0.15 -0.15 -0.35 -0.8 ? ? 0 0 0 0 0.15 0.15 0 -14 -30 db noi s e l e vel i n t h e frequency range from 300 t o 3000 hz (rel a t i v el y t o l e vel 0 db m 0 at frequency 1.02 khz under transm ission and receipt) * ? -48 ? - 4 8 ? - 4 8 db atten u a tio n o f p a rasitic harm oni cs bey ond t h e l i m i t s of gat i ng frequency vfr o vfr o (r el at i v el y t o i nput si gnal of frequency 300?3400 hz and lev e l 0 db m 0 ) from 4600 t o 7600 hz from 7600 t o 8400 hz from 8400 t o 100000 hz ? ? ? -30 -40 -30 ? ? ? ? ? ? ? ? ? -30 -40 -30 db 6
IL145567 continued t r ough channel channel ad channel da characteri sti c min m ax min m ax m i n m a x unit noi s e of "si l e nt " sel ect ed channel (for frequency 8 khz. input ? gnda) ? - 7 0 ? ? ? - 7 0 db m absol u t e del a y (on frequency 1600 hz) ? ? ? 315 ? 215 m k s group del a y rel a t i v el y t o si gnal of frequency 1600 hz 500 600 hz 600 800 hz 800 1000 hz 1000 1600 hz 1600 2600 hz 2600 2800 hz 2800 3000 hz ? ? ? 220 145 75 40 75 105 155 -40 -40 -40 -30 ? ? ? ? ? 90 125 175 mk s c r osst al k of si gnal of frequency 1020 hz for ad or da ? ? ? -75 ? -75 db interm odulation distor tions of two signals with am plitude from m i nus 4 t o m i nus 21 db m 0 for t h e range 300 3400 hz ? -41 ? - 4 1 ? - 4 1 db * param e ters o f th e ch an n e ls / d and d/ are guarant eed by m easuri ng t h rough channel param e t e rs pow er oa characteristic min typic a l max unit input current (-1 v vpi 1v) vpi ? ? 0.5 m k a input resi st ance (-1 v vpi 1 v) vpi 5 1 0 ? m o hm input bi as vol t a ge (vpi connect ed t o vpo-) vpi ? ? 50 m v out put resi st ance vpo?or vpo+ ? 1 ? ohm am p lificatio n ratio fro m vpo? to vpo+ (r load = 300 ohm , vpo+ t o g nda, level on vpo? equals 1.77vrm s, 3 dbm 0 ) ? - 1 ? v/ v m a xi m u m l e vel 0 db m 0 for bet t e r t h an 0 . 1 d b lin earity in th e ran g e m ore t h an from ?10 db m 0 t o 3 db m 0 (for r load between vpo+ and vpo) r load = 600 ohm r load = 1200 ohm r load = 10 ohm 3.3 3.5 4.0 ? ? vrm s * noi s e at t e nuat i on on suppl y on vcc or v bb (vpo- connected to vpi) v po?or vpo+ connected to gnda db 0 ? 4 khz 4 ? 50 khz 55 35 di fferent i a l noi se at t e nuat i on on suppl y on vcc or v bb (vpo- connected t o vpi), vpo? connected to vpo+ , 0 ? 50 khz 50 db load capacitance (r load 300 ohm ) vpo+ or vpo? t o gnda 0 1000 * db m 0 = 1.2276vrm s = 4 db m 7
IL145567 tsx mclk x mclk r bclk x fsx dx bclk r fs r d r t d(bts) t w(m) t w(m) t d(zc) t su(mfb) t w(b) t w(b) t su(brm) t h(bf) t h(f) t su(f) t d(bd) t d(zc) t h(bf) t h(f) t su(f) t h(bd) t su(db) t h(bd) 1 ch1 ch2 ch3 st1 st2 st3 lsb msb ch1 ch2 ch3 st1 st2 st3 lsb 2 3 4 5 67 8 9 1 2 3 4 5 67 8 9 msb at short fram e sy nchroni sat i on, sy nchroni sat i on pul ses fsx or fs r shoul d have durat i on equal t o durat i on of cl ock generat o r m c lk pul ses. fi gure 3 ? t i me di agram at short frame synchroni s ati o n 8
IL145567 mclk x mclk r bclk x fsx dx bclk r fs r d r t su(mfb) t su(brm) t h(bfi) t su(fb) t d(bd) t d(zc) t h(bf) t h(bfi) t su(fb) t h(bd) t su(db) t h(bd) 1 ch1 ch2 ch3 st1 st2 st3 lsb msb ch1 ch2 ch3 st1 st2 st3 lsb 2 3 4 5 67 8 9 1 2 3 4 5 67 8 9 t h(bf) t d(zf) t d(zf) t d(zc) msb at long fram e sy nchroni sat i on, sy nchroni sat i on pul ses fsx or fs r shoul d have durat i on not l e ss t h an 3 bi t s of cl ock generat o r m c lk. fi gure 4 ? t i me di agram at l o ng frame synchroni s ati o n 9
IL145567 package dimension n s u f f i x p l as t i c d i p (m s - 0 0 1 a d) sy m b o l m i n m a x a 24. 8 9 26. 92 b 6. 10 7. 11 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 20 0. 36 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d i me n s i o n , mm 2. 54 7. 62 l h m j a b f g d se a t i n g pl an e n k 0.2 5 ( 0 . 010) m t -t - c 1 20 10 11 10
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