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rev. b information furnished by analog devices is believed to be a cc urate and reliable. however, no resp ons ib ility is a ss umed by analog devices for its use, no r for any infringements of patents or other right s of third partie s that may re sult from its use. specicati on s subject to change w it hout notice. no license is granted by implicati on or otherwise u nd er any patent or patent rights of analog devices. trademarks and registered trademarks a re the property o f their respective owners. one te chno logy way, p. o. box 91 06 , norwood, ma 02062-9106, u.s.a. tel: 78 1.329.4700 ww w.ana lo g. com fax: 7 81.4 61 .3113 ?2012 analog devices, inc. all rights reserved. 1. msop lfcsp (qfn) 14/16/18 pulsar? adc 10 0 ksps 250 ksps 400 ksps 500 ksps 1 00 0 ksps adc 18 1 ad7691 2 ad7690 2 ad7982 2 ad7984 2 ada4941-1 ada4841-1 16 1 ad7684 ad7687 2 ad7688 2 ad7693 2 ada4941-1 ada4841-1 16 3 ad7680 ad7683 ad 798 8-1 2 ad7685 2 ad7694 ad7686 2 ad 798 8-5 2 ad7980 2 ada4841-1 ada4841-1 ada4841-1 14 3 ad7940 ad7942 2 ad7946 2 ada4841-1 ?? ref gnd vdd in+ in? vio sdi sck sdo cnv 1.8v t o 5.5v 3- or 4- wi re i nterf ace (spi , da isy cha in , cs) 2.5v t o 5v 2.5v 0v to v ref 102 31- 001 ad7988-1/ AD7988-5 msop/lfcsp (qfn) ?16?pulsar adc ad7988-1/AD7988-5 ? ? AD7988-53.5 mw (500 ksps) ad7988-1700 w (100 ksps) 16??? ?100 ksps/500 ksps? inl0.6 lsb(?)1.25 lsb(?) sinad91.5 db (10 khz) thd-114 db (10 khz) ?? 0 vv ref (v ref 2.5 v5.5 v?) ?ada4841-1 ?? 2.5 v??1.8 v/2.5 v/3 v/5 v?? spi/qspi/microwire ? /dsp?? ????adc 10msop103 mm 3 mm lfcsp (qfn)(sot-23 )? ????40c+125c ? ? ????? ?? ? ?? ? ad7988-1/AD7988-5 16???? (adc)??vddad7988-1?100 ksps AD7988-5?500 ksps????? ???????16adccnv? in+ in-????0 v v ref ?? (ref)?????? ?(vdd) spi????sdi???? ?adc????? vio1.8 v2.5 v3 v5 v? ad7988-1/AD7988-510msop?10 lfcsp (qfn)????-40+125c 1 ? 2 ?? 3 ? ?1 adi???????????adi???????????adi? ????
rev. b | page 2 of 24 ?? ?? 20122??0? ad7988-1/AD7988-5 ? ............................................................................................1 ? .....................................................................................................1 .....................................................................................................1 ?? ........................................................................................1 ?? ............................................................................................2 ............................................................................................3 ? ........................................................................................5 ?? ...............................................................................7 esd .........................................................................................7 ? ......................................................................8 .....................................................................................................9 ? ................................................................................ 10 ? ......................................................................................... 14 ? ..................................................................................... 14 ? ................................................................................. 14 ? ................................................................................. 15 ? ..................................................................................... 16 ?? ........................................................................ 16 ?? ............................................................................ 17 ? .............................................................................................. 17 ?? ..................................................................................... 17 cs??? ....................................................................... 18 cs??? ....................................................................... 19 ?? .......................................................................................... 20 ?? ......................................................................................... 21 blackn ? dsp? ................................................................. 21 .............................................................................................. 21 ad7988-x ................................................................... 21 ? ......................................................................................... 22 ? ..................................................................................... 23 20125??a?b ? 3 .............................................................................................. 4 ?? ? ............................................................................. 22 20122??0?a lfcsp? ........................................................................... 7 ?? ?.............................................................................. 23 ?? ?.............................................................................. 23
rev. b | page 3 of 24 ?vdd = 2.5 vvio = 2.3 v5.5 vv ref = 5 vt a = ?40c+125c ? 16 ? ? in+ ? i n? 0 v ref v ? in+ ?0.1 v ref + 0.1 v in? ?0.1 +0.1 v ?cmrr f in = 1 khz 60 db 25c?? ?? 1 na ? 16 ? v ref = 5 v ?0.9 0.4 +0.9 lsb 1 v ref = 2.5 v 0.55 lsb 1 v ref = 5 v ?1.25 0.6 +1.25 lsb 1 v ref = 2.5 v 0.65 lsb 1 ?? v ref = 5 v 0.6 lsb 1 v ref = 2.5 v 1.0 lsb 1 (t min t max ) 2 ? 2 lsb 1 0.35 ppm/c ?0.5 0.08 +0.5 mv ? 0.54 ppm/c ? v dd = 2.5 v 5% 0.1 lsb 1 ad 7988-1 ? vio 2.3 v(85c) vio 3.3 v(85c125c) 0 100 ksps ??? ?? 500 ns ad 7988-5 ? vio 2.3 v(85c) vio 3.3 v(85c125c) 0 500 ksps ??? ?? 400 ns ? v ref = 5 v 92 db 3 v ref = 2.5 v 87 db 3 ? f o = 10 ksps 111 db 3 f in = 10 khz, v ref = 5 v 90 91 db 3 f in = 10 khz, v ref = 2.5 v 86.5 db 3 f in = 10 khz ?110 db 3 ?(thd) f in = 10 khz ?114 db 3 ?(sinad) f in = 10 khz, v ref = 5 v 91.5 db 3 f in = 10 khz, v ref = 2.5 v 87.0 db 3 ad7988-1/AD7988-5 2. ? ? ? / ? ?(t min t max ) 2 (snr) ?? 1 lsb?5 v??1 lsb = 76.3 v 2 ???????????? 3 ??(db)??fsr?0.5 db???
rev. b | page 4 of 24 3. ?? ? 2.4 5.1 v ? v ref = 5 v 250 a ? 10 mhz ?? v dd = 2.5 v 2.0 ns ?? v il vio > 3 v ?0.3 0.3 vio v v ih vio > 3 v 0.7 vio vio + 0.3 v v il vio 3 v ?0.3 0.1 vio v v ih vio 3 v 0.9 vio vio + 0.3 v i il ?1 +1 a i ih ?1 +1 a ?? 16?? ?? ??? v ol i sink = 500 a 0.4 v v oh i so urce = ?500 a vio ? 0.3 v ? vdd 2.375 2.5 2.625 v vio ? 2.3 5.5 v vio 1.8 5.5 v 1, 2 vdd vio = 2.5 v 25c 0.35 na 10 ksps 70 w 100 ksps 700 w 1 mw 500 ksps 3.5 5 mw ?? 7.0 nj/ ?? ? t min t max ?40 +125 c ad7988-1/AD7988-5 ?vdd = 2.5 vvio = 2.3 v5.5 vv ref = 5 vt a = ?40c+125c / ? ? ? ? ?3 db ad7988-1 AD7988-5 1 ???viognd 2 ???
rev. b | page 5 of 24 ? ?vdd = 2.37 v2.63 vvio = 3.3 v5.5 v?40c+125c?2?3 ? ? ? ad7988-1 100 khz ???cnv? t conv 9.5 s ?? t acq 500 ns ?? t cyc 10 s AD7988-5 500 khz ???cnv? t conv 1.6 s ?? t acq 400 ns ?? t cyc 2 s cnv(cs??) t cnvh 500 ns t sck vio4.5 v 10.5 ns vio3 v 12 ns vio2.7 v 13 ns vio2.3 v 15 ns sck(??) t sck vio4.5 v 11.5 ns vio3 v 13 ns vio2.7 v 14 ns vio2.3 v 16 ns sck??? t sckl 4.5 ns sck??? t sckh 4.5 ns sck?? t hsdo 3 ns sck??? t dsdo 9.5 ns vio3 v 11 ns vio2.7 v 12 ns vio2.3 v 14 ns cnvsdi??sdo d15 msb(cs??) t en vio3 v 10 ns vio2.3v 15 ns t dis 20 ns cnvsdi? t ssdicnv 5 ns cnvsdi?(cs??) t hsdicnv 2 ns t hsdicnv 0 ns cnvsck?(??) t s sc kcnv 5 ns cnvsck?(??) t hsckcnv 5 ns t ssdi sck 2 ns t hsdi sck 3 ns ad7988-1/AD7988-5 4. sck(cs??) vio4.5 v cnvsdi???sck?sdo?(cs??) cnvsdi?(??) sck?sdi?(??) sck?sdi?(??)
rev. b | page 6 of 24 500 a i ol 500 a i oh 1.4v to sdo c l 20 pf 1 023 1-002 x% vio 1 y% vio 1 v ih 2 v il 2 v il 2 v ih 2 t delay t delay 1 fo r vio ? 3.0v , x = 90 and y = 10; fo r vio > 3.0v x = 70, and y = 30. 2 minimum v ih and maximum v il used . see dig it al inputs speci ficati ons in t ab le 3. 10 231- 003 ad7988-1/AD7988-5 ?2. ????? ?3. ???
rev. b | page 7 of 24 ?? ?? ? in+, 1 in? 1 gnd ?0.3 v v ref + 0.3 v 130 ma ?? ref, vio gnd ?0.3 v +6 v v dd g nd ?0.3 v +3 v v dd vio +3 v ?6 v ?0.3 v vio + 0.3 v gnd gnd ?0.3 v vio + 0.3 v ?? ?65c +125c 150c ja 200c/w 10 lfcsp 80c/w jc 10 msop 44c/w 10 lfcsp 15c/w esd ad7988-1/AD7988-5 5 . 10msop jedec?(j-std-020) 1 ??? ?????? ???? Z??? ????1? ??? esd(?) ???? ????? esd?????? ??esd?? ??
rev. b | page 8 of 24 ref 1 vdd 2 in+ 3 in? 4 gnd 5 vio 10 sdi 9 sck 8 sdo 7 cnv 6 102 31 -004 ad7988-1/ AD7988-5 top view (not to scale) n otes 1. t he exposed p ad can be co nn ected to g nd. 1ref 2vdd 3in+ 4in? 5gnd 10 vio 9 sdi 8 sck 7 sdo 6 cnv 10231-005 ad7988-1/ AD7988-5 top view (not to scale) 6. ? ? 1 1 re f ai 2 vd d p 3 in+ ai 4 in? ai 5 gnd p 6 di cnv 7 sdo do 8 sck di 9 di sdi 10 vi o p ep ad7988-1/AD7988-5 ?4. 10msop ?5. 10lfcsp (qfn) 1 ai = ??di = ?do = p = ? ??v ref ? 2.4 v 5.1 v ?gnd???10f?ref? sgnd? ? ??in??(in+in???)? 0 vv ref ?????????? ?? ????????????cs?? cs??cnv????sdo?????cnv????? ??sck? ???????? ????adc??? cnv ????????? sdi ?? adc??????sdo?sdi????sdo 16sck? sdi cnv?????cs????sdi cnv?????? ?? /????????(1.8 v 2.5 v 3 v 5 v) ?????gnd ?
rev. b | page 9 of 24 ad7988-1/AD7988-5 ? = log2(2n/?) ? = log 2 (2 n /) ? ????? ? ?(thd) thd???????? ???db? ? ????????? ???db?? ?60 dbf ?? ???dnl (snr) snr????????3 ????????db ? ?(sinad) sinad???????? ???????? db? ?? ??????cnv? ????? ??? ?????????adc ???? ?(inl) inl???????? ?????????? lsb ?????1? lsb? ?????????(?30) ??(dnl) ?adc?? 1 lsb dnl??? ??????? ? ? ????????? lsb??(0 v 5 v38.1 v)?????? ? ???1? lsb?(0 v5 v ?4.999886 v)???(111 ? 10?? 111 ? 11)???? ??????? ??(sfdr) sfdr?????????? (db)? (enob) enob??????sinad? ???? enob = (sinad db ? 1.76)/6.02 ? ? ???? ??????? ?
rev. b | page 10 of 24 ? ?vdd = 2.5 vv ref = 5.0 vvio = 3.3 v 0 ?180 frequency (khz) ?20 ?40 ?60 ?80 ?100 ?120 ?140 ?160 f s = 50 0ksps f in = 10 khz snr = 91. 17 db t hd = ?113. 63 db sf dr = 110.30db si nad = 91. 15 db amp lit ud e (db of f ull s ca le) 0 50 100 150 200 250 10 231- 046 0 ?180 frequency (khz) ?20 ?40 ?60 ?80 ?100 ?120 ?140 ?160 f s = 50 0ksps f in = 10 khz snr = 86.8db t hd = ?111.4db sf dr = 105.9db si nad = 86.8db amplit ud e (db of full sca le) 0 50 100 150 200 250 10 23 1-047 0 ?1 80 frequency (khz) ?20 ?40 ?60 ?80 ?1 00 ?1 20 ?1 40 ?1 60 f s = 10 0ksps f in = 10 khz snr = 91 .09db t hd = ? 113 .12db sf dr = 1 10 .30db si nad = 91.05db amplit ud e (db of f u ll sca le) 0 10 20 30 40 50 102 31 -048 0 ?180 frequency (khz) ?20 ?40 ?60 ?80 ?100 ?120 ?140 ?160 f s = 10 0ksps f in = 10khz snr = 86 .7db t hd = ?110.4db sf dr = 103.9db si nad = 86.6db amp lit ud e (db of full sca le) 0 10 20 30 40 50 10 231- 049 1.25 ?1.25 code inl (lsb) 1.00 0.75 0.50 0.25 ? 0.25 ?0.75 0 ?0.50 ?1.00 positive inl: +0.40 lsb negative inl: ?0.35 lsb 0 16384 32768 49152 65 536 102 31 -010 1.25 1.00 ?1.25 ?1.00 inl (lsb) 0.7 5 0.50 0.25 ?0.25 ?0.75 0 ?0.50 positive inl: +0.45 lsb negative inl: ?0.29 lsb code 0 163 84 32768 491 52 65 536 10231-011 ad7988-1/AD7988-5 ?6. AD7988-5 fft?v ref = 5 v ?8. ad7988-1 fft?v ref = 5 v ?7. AD7988-5 fft?v ref = 2.5 v ?11. ???v ref = 2.5 v ?10. ???v ref = 5 v ?9. ad7988-1 fft?v ref = 2.5 v
rev. b | page 11 of 24 code 0 1 6384 32 768 49 152 65536 1.00 ?1.00 dnl (lsb) 0.75 0.50 0.25 ?0.25 ?0.75 0 ?0. 50 positive inl: +0.18 lsb negative inl: ?0.21 lsb 10 23 1- 012 code 0 16384 32768 49152 65 536 1.00 ?1.00 dnl (lsb) 0.75 0.50 0.25 ?0.25 ?0.75 0 ?0.50 positive inl: +0.25 lsb negative inl: ?0.22 lsb 10 231- 013 180k 0 0 00 00 22 code i n hex counts 8003 8004 8005 8006 8007 8008 8009 800a 800b 800c 800d 800 e 800f 1291 852 29 2 10231- 050 160k 140k 120k 100k 80k 60k 40k 20k 52 720 16 25 95 42 731 60k 0 0 00 0 94 30 1 code in hex counts 50k 30k 10k 40k 20k 7ffa 7ffb 7ffc 7ffd 7ffe 7fff 80 00 80 01 80 02 80 03 80 04 8005 8006 2290 18848 50970 45198 12424 1217 10 23 1-015 100 80 85 90 95 reference voltage (v) snr, sinad (db) 16 12 13 14 15 enob (bits) snr sinad enob 2.25 2.75 3.25 3.75 4.25 4.75 5.25 10 231- 016 60k 0 0 00 0 590 11 19 code in hex counts 50k 30k 10k 40k 20k 7 ff a 7 ff b 7 ff c 7 ff d 7 ff e 7 ff f 8000 8001 8002 8003 8004 8005 8006 7285 37 417 53 412 31 540 5807 512 10231- 051 ad7988-1/AD7988-5 ?12. ????v ref = 5 v ?13. ????v ref = 2.5 v ?14. ????() v ref = 5 v ?17. ????() v ref = 2.5 v ?16. snrsinadenob???? ?15. ????(??) v ref = 2.5 v
rev. b | page 12 of 24 95 85 87 89 92 91 93 94 86 88 90 input level (db of full scale) snr (db) ?1 0 ?9 ?8 ?7 ?6 ?5 ?4 ?3 ?2 ?1 0 102 31 -018 ?95 ?125 ?110 ?115 ?105 ?100 ?120 115 85 100 95 105 110 90 reference voltage (v) thd (db) sfdr (db) thd sfdr 2.25 2.75 3.25 3.75 4.25 4.75 5.25 1 02 31- 019 100 80 10 1k freque nc y (khz) si nad (db) 95 90 85 100 10231- 052 102 31- 053 95 85 89 87 91 93 ?55 125 tempe rat ur e (c) snr (db) ?35 ?15 5 25 65 85 45 105 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 vdd voltage (v) i vdd i ref i vio curren t (ma) 2. 37 5 2. 42 5 2. 47 5 2. 52 5 2. 57 5 2. 625 10231-023 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0 vdd voltage (v) i vdd i ref i vio curren t (ma) 2. 37 5 2. 42 5 2. 47 5 2. 52 5 2. 57 5 2.625 102 31- 024 ad7988-1/AD7988-5 ?18. snr??? ?19. thdsfdr???? ?20. sinad???? ?21. snr???? ?22. ???(AD7988-5) ?23. ???(ad7988-1)
rev. b | page 13 of 24 102 31- 054 ?85 ?1 25 10 1k freque nc y (khz) t hd (db) 100 ?90 ?95 ?1 00 ?1 05 ?1 10 ?1 15 ?1 20 ?110 ?120 thd (db) temperature (c) ?112 ?114 ?116 ?118 ?55 ?35 ?15 5 25 45 65 85 105 125 10 231- 026 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 curr ent (ma) i vdd i ref i vio temperature (c) ?55 ?35 ?1 5 5 25 45 65 85 105 125 10 23 1-027 0.14 0.12 0.10 008 0.06 0.04 0.02 0 curren t (ma) i vdd i ref i vio temperature (c) ?55 ?35 ?15 5 25 45 65 85 105 125 102 31- 028 8 7 6 5 4 3 2 1 0 curr ent (a) tempe rat ur e (c) i vdd + i vio ?55 ?35 ?15 5 25 45 65 85 105 125 10 231- 029 ad7988-1/AD7988-5 ?24. thd???? ?25. thd???? ?26. ????(AD7988-5) ?27. ????(ad7988-1) ?28. ??????
rev. b | page 14 of 24 ? comp swit ch es control busy output code cnv control logic sw+ lsb sw? lsb in+ ref gnd in? msb msb c c 4c 2c 16,384c 32,768c c c 4c 2c 16,384c 32,768c 102 31 -030 ad7988-1/AD7988-5 ?29. adc??? ? ad7988-1/AD7988-5????? 16adc???? ad7988-1???100,000(100ksps) AD7988-5?500 ksps??? ??10 ksps??adc??70 w????? ad7988-x ???????? ???????? ad7988-x1.8 v 5 v?????10 msop?10lfcsp (qfn)???? ? ad7988-x???dac?adc ? 29??adc????dac? ?16????? ? ?????sw+ sw-?gnd???? ???in+in??? ????cnv????? ??????sw+ sw-? ????gnd ?????(in+ in?)? ?????????? gnd ref?????? ????(v ref /2v ref /4 ? v ref /65,536) ? msb ?????? ??????????? ?adc? ad7988-x ???????? ?sck
rev. b | page 15 of 24 00 0 ... 000 00 0 ... 001 00 0 ... 010 111 .. . 101 111 .. . 110 111 .. . 111 ?fsr ?fsr + 1lsb ?fsr + 0.5lsb +fsr ? 1 lsb +fsr ? 1.5 l sb analog i nput adc code (st raig ht bi nary) 102 31 -031 7. ? ? v ref = 5 v fsr ? 1 l sb 4.999924 v ffff 1 ? + 1 lsb 2.500076 v 8001 ? 2.5 v 8000 ? ? 1 lsb 2.499924 v 7fff ?fsr + 1 l sb 76.3 v 0001 ?fsr 0 v 0000 2 ad798 8-1/ ad798 8-5 2.5v v+ 20 v+ v? 0v to v ref 1.8v t o 5.5v 100nf 10 f 2 2.7nf 4 3 100nf ref in+ in? vdd vio gnd 3- o r 4- wi re interf ace 5 ref 1 1 see t he voltage refere nce i npu t section f or refere nc e select io n. 2 c ref i s us ua lly a 10 f ce ra mic capac itor (x5r). 3 see t he dr iver amplifi er choi ce section. 4 optio nal f i lt er. see the analog i nputs section. 5 see t he d igi ta l i nterf ac e sec ti on for t he most convenient interf ac e mode. 1 023 1-032 cnv sck sdo sdi ad7988-1/AD7988-5 ? ad7988-x??30?7? ?30. adc?? (?) 1 ???(v in + ? v in ?v ref ? v gnd )?? 2 ????v in + ? v in ?v gnd ??? ? ? 31?????ad7988-x?? ?31. ?????
rev. b | page 16 of 24 ref r in c in in+ o r in? gnd d2 c pin d1 102 31- 033 ?? ?ad7988-x??? ? ???? ad7988-x snr?? r in c in ?ad7988-x??? ???()? ad7988-x??47.3 v rms?? snr?? ? ? ? ? ? ? ? ? ? ? ? ? + = ? 2 3db 2 )( 2 47.3 47.3 log20 n loss nef snr 8. ?? ? ? ada4841-1 ?? ad 8021 ? ad 8022 ? op184 ??? ad 8655 5 v? ad8605 , ad 8615 5 v?? ad7988-1/AD7988-5 ? ?32?ad7988-x?? d1 d2??in+ in??esd ????0.3 v? ????? 130 ma???vdd? ?????? ?? ???in+in????? ?????? ????(in+ in?)?r in c in ?c pin ??c pin ? ??r in ??400 ??? ?D???c in ??30 pf? adc?????? c pin r in c in ????? ? ????ad7988-x ????? thd?? ?????? ?(thd) thd??? ??? ?32. ? f ?3db ? ad7988-x(10 mhz)??? ?()???? n??(??1) e n ?????nv/hz ? ???thd?ad7988-x ? ?????ad7988-x ??16 ?? (0.0015% 15 ppm)????? ?0.1% 0.01%???16? ?????????
rev. b | page 17 of 24 80 55 1 1k freque nc y (khz) psrr (db) 10 100 75 70 65 60 10231- 034 ?33. psrr???? ?? ad7988-x?? ref?? ??ref gnd???? ?? ?(? ad8031 ad8605 ??? )ref?????? ??????????? ????????adr43x?22 f (x5r1206?)????? ??? 2.2 f????? (?dnl)?? ref gnd??????? (100 nf) ? ad7988-x??????(vdd)? /???(vio)vio1.8 v5.0 v ??????? vio vdd ? ?ad7988-x vio vdd????? ????????? ?33? ???vdd????ref? ?ref?5.0 vvdd??2.5 v (5%) ref = 2.5vvdd = 2.5 v??2? ad7988-x???????? ?? ?ad7988-x?????? cs??ad7988-x spi qspi ? ? ??????????cnv sck sdo??????? ???? sdi cnv sck sdo ??cnv??(sdi)?? ??? ??ad7988-x??? sdi ??adc?? ???cnv??sdi? sdi????cs??sdi???? ?? sdi ??sdi cnv ??? ??? ???????? ad7988-1/AD7988-5
rev. b | page 18 of 24 ad7988 -1/ ad7988 -5 sdo da ta i n d ig ita l host convert clk vio cnv sck sdi 10231-035 t conv t cyc cnv ac quisit ion ac quisiti on t acq t sck t s ckl conversion sck sdo d15 d14 d13 d1 d0 t en t hsdo 1 2 3 14 15 16 t dsdo t dis t s ckh t cn vh sd i = 1 10 23 1-036 ad7988-1/AD7988-5 cs??? ?ad7988-x?spi?? ???????34???? 35? sdi ? vio ?cnv ???cs ???sdo??? ad7988-x ????? cnv ???? msb sdo? sck ? sck ?? ?????? sck? ???????? ???16 sck?????cnv? ??(???)sdo?? ?35. ?cs????(sdi??) ?34. ?cs???
rev. b | page 19 of 24 dig it al host convert clk da ta in ad 7988-1/ ad 7988-5 sdo cnv sck ad79 88-1/ ad79 88-5 sdo cnv sck cs1 cs2 sdi sdi 10231-037 t conv t cyc ac quisi ti on ac quisition t acq t sck t s ckh t s ckl convers ion sck cnv t ss di cnv t hsdi cnv sdo d15 d13 d14 d1 d0 d15 d14 d1 d0 t hsdo t en 1 2 3 14 15 16 17 18 30 31 32 t dsdo t dis s di (cs1) s di (cs2) 10 231- 038 ad7988-1/AD7988-5 ??ad7988-x?????? adc?sdi??msb sdo?sck? sck ????? ???? sck ???? ????????16 sck ???? sdi ????(???) sdo??????ad7988-x cs??? ?ad7988-x?spi??? ??? ?ad7988-x???36?? ??37? sdi????cnv???cs ???sdo???cnv? ???????( sdi cnv???sdo??? )???? sdi?spi?sdi ???????? ????? ?36. ?cs??? ?37. ?cs????
rev. b | page 20 of 24 d ig ital host convert clk da ta i n ad 7988-1/ ad 7988-5 sdo cnv a sck ad 7988-1/ ad 7988-5 sdo cnv b sck 10231- 039 sdi sdi t conv t cyc t ss disck t s ckl t sck t hsdisck t acq ac quisit ion t ssckcnv ac quisit ion t s ckh conversion t hs ckcnv sck cnv sdo b t en d a 15 d a 14 d a 13 d b 15 d b 14 d b 13 d b 1 d b 0 d a 15 d a 14 d a 0 d a 1 d a 1 d a 0 t hsdo 1 2 3 15 16 17 14 18 30 31 32 t dsdo 10 23 1-040 sdi a = 0 sdo a = sdi b ad7988-1/AD7988-5 ?? ???????? ad7988-x ?? ?????????? ????? ?ad7988-x???38?? ??39? sdi cnv ???? sdo ??? sck? ??cnv?????? ?cnv???????? ??? msb sdo ad7988-x? ??????? sck ??adc sdi????sck? ?adcmsb?n adc?16 n ?? sck ???? ????? sck ??? ??????ad7988-x ??????? ??? ?38. ??? ?39. ????
rev. b | page 21 of 24 ad 79 88 -1/ ad 79 88 -5 sck sdo cnv spi_clk spi_miso spi_mosi 10 23 1-041 bl ack fin dsp ?sport??adc??sport? ?????(dma)? ?cnv?(?) sport ad7988-x????? ad7988-x?blackn (adsp-bf-527) sdpsport??sport???? ??41?cnv????adc sck ????? sck ? ????adc?not sckrsclk rfs??? ??????? ??sport??adc?? sck sdo cnv tsclk dr tfs rfs rsclk vdr ive ad7988 -1/ ad7988 -5 1023 1- 045 bl ack fin dsp ad7 988 -1/ ad7 988-5 10231- 043 10 23 1- 044 ad7988-1/AD7988-5 ?? blackfin ? dsp? ad7988-x?dsp spisportspi? ???spi????40? ?40. blackn spi??? ?41. blackn sport?? ad7988-x ??(pcb) ???? ???? ad7988-x ?????? ?? ?? ad7988-x??? cnv????????? ???? ??????????? ?y???????ad7988-x ? ad7988-x?? ref?? ? ref ???????? ( )ref gnd??y? ?? ad7988-x?? vdd vio ?????? ???100 nfad7988-x??? ????? ?? ?42?43???? ad7988-x ad7988-x (eval-AD7988-5sdz)?? ??]???pc?eval- sdp-cb1z ?42. ad7988-x?() ?43. ad7988-x?(?)
rev. b | page 22 of 24 ? compliant to jedec standards mo-187-ba 091709-a 6 0 0.70 0.55 0.40 5 10 1 6 0.50 bsc 0.30 0.15 1.10 max 3.10 3.00 2.90 coplanarity 0.10 0.23 0.13 3.10 3.00 2.90 5.15 4.90 4.65 pin 1 identifier 15 max 0.95 0.85 0.75 0.15 0.05 2.48 2.38 2.23 0.50 0.40 0.30 top view 10 1 6 5 0.30 0.25 0.20 bottom view pin 1 i ndex ar ea sea ti ng pl ane 0.80 0.75 0.70 1.74 1.64 1.49 0.20 ref 0.05 max 0.02 nom 0.50 bsc expo sed pad 3.10 3.00 sq 2.90 pin 1 indicator (r 0.15) for proper co nnec ti on o f the exposed p ad , refer t o the pin con fig urat io n and f unct io n descr ipti ons sec ti on o f this da ta sheet. copl anarity 0.08 02-27-20 12 -b ad7988-1/AD7988-5 ?44. 10???[msop] (rm-10) ?nmm ?45. 10???[qfn (lfcsp_wd)] 3 mm 3 mm ?(cp-10-9) ???nmm
rev. b | page 23 of 24 ? ? 1 ? ? ?? ? ?? ? ad7988-1brmz ? 1.25 lsb ?40c + 12 5c 50 10msop rm-10 c7e ad7988-1brmz-rl7 ?1.25 lsb ?40c + 12 5c ?1,000 10msop rm-10 c7e ad7988-1bcpz-rl ?1.25 lsb ?40c + 12 5c ?5,000 10qfn (lfcsp_wd) cp-10-9 c7x ad7988-1bcpz- rl 7 ?1.25 lsb ?40c + 12 5c ?1,500 10qfn (lfcsp_wd) cp-10-9 c7x AD7988-5brmz ?1.25 lsb ?40c + 12 5c 50 10msop rm-10 c7q AD7988-5brmz-rl7 ?1.25 lsb ?40c + 12 5c ?1,000 10msop rm-10 c7q AD7988-5bcpz-rl ?40c + 12 5c ?5,000 10qfn (lfcsp_wd) cp-10-9 c7y AD7988-5bcpz-rl7 ?1.25 lsb ?40c + 12 5c ?1,500 10qfn (lfcsp_wd) cp-10-9 c7y eval-ad7 98 8-5 sdz 2 AD7988-5 ad7988-1 AD7988-5 eval-sdp-cb1z 3 ????usb pc ??? ad7988-1/AD7988-5 ?1.25 lsb 1 z = rohs 2 ??eval-sdz-cb1z/? 3 ?pcsd??adi????
rev. b | page 24 of 24 ? ?2012 analog devices, inc. a ll rights reserved. trademarks and registered trademarks are the property of their respe ct ive owners. d10231sc-0-5/12(b) ad7988-1/AD7988-5

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