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c c s s 1 1 1 1 8 8 0 0 c c s s 1 1 1 1 8 8 0 0 ? ? ? ? ? ? 1 1 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 ? ? 1 CS1180 ? ........................................................................................................................... 4 1.1 CS1180 ? ........................................................................................................... 4 1.2 ? ............................................................................................................................... .. 4 1.3 ............................................................................................................................... .. 5 2 CS1180 ? ........................................................................................................................... 6 2.1 ?? ............................................................................................................. 6 2.2 CS1180 ? ........................................................................................................... 6 2.3 CS1180 ????? ........................................................................................................... 7 2.4 CS1180 ................................................................................................................... 9 2.5 CS1180 ? ......................................................................................................................... 11 3 CS1180 ? ................................................................................................................. 13 3.1. ??buffer ................................................................................................ 13 3.2. ?? pga ............................................................................................... 13 3.3. modulator .......................................................................................................... 13 3.4. calibration ..................................................................................................... 13 3.3.1 ?? system calibration ................................................................................ 13 3.4 ?? external voltage reference .................................................................. 14 3.5 ??? clock unit ..................................................................................................... 14 3.6 ? (fir).................................................................................................................. 14 3.7 ?? ( spi ) ............................................................................................................ 15 3.7.1 ??? ( cs ) ............................................................................................................. 15 3.7.2 ? ( sclk )........................................................................................................ 15 3.7.3 ( sdi ) ( sdo ) ........................................................................... 15 3.7.4 ? ( drdy ).............................................................................................. 15 3.8 ?y???reset ................................................................................... 15 4 CS1180 ? ..................................................................................................................... 16 4.1 ? ........................................................................................................................... 16 4.2 ?? ................................................................................................................... 17 5 CS1180 ? ......................................................................................................................... 21 5.1 CS1180 ? ................................................................................................................. 21 5.2 CS1180 ?? ......................................................................................................... 22 6 CS1180 ?? ............................................................................................................................. 24 ? ? ? ? ? ? 2 2 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 ? ? 1 CS1180 ?? .......................................................................................................................... 5 ? 2 CS1180 ?? .............................................................................................................................. 7 ? 3 CS1180 ?? ............................................................................................................................ 11 ? 4 ?? ......................................................................................................................... 14 1 CS1180 ? .............................................................................................................................. 6 2 CS1180 ? .................................................................................................................. 6 3 CS1180 ? .......................................................................................................................... 7 4 CS1180 ? ............................................................................................................................... ... 8 5 avdd=5v ? CS1180 ................................................................................................... 9 6 avdd=3v ? CS1180 ................................................................................................. 10 7 CS1180 ? ............................................................................................................................ 12 8 ?? ..................................................................................................................... 13 9 ?? ran ?? ................................................................................................. 14 10 ??? ......................................................................................................... 16 11 CS1180 ? ........................................................................................................... 21 ? ? ? ? ? ? 3 3 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 1 CS1180 ? CS1180 ????????? 24bit ??? 19 ????????/ `???? 1.1 CS1180 ? z 24 ?? 19 ??? z 50hz 60hz ??? 90db z inl 0.0015% z ?1 128 z ?? z ???adc z ??? 0.1v 5v z ? z ? spi ?? 1.2 ? z ?? z z ?/ `? z ?? z ? z ? ? ? ? ? ? ? 4 4 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 1.3 CS1180 ??? 1 ? CS1180 24 ??? sigma-delta ?????? 19 2.7v~5.5v ??1. CS1180 ? 1 128 ?? 128 ? CS1180 ??? 18bit ? sigma-delta ? fir ?? 50hz 60hz ? ??? CS1180 ? spi ???? ?1 CS1180 ?? ? ? ? ? ? ? 5 5 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 2 CS1180 ? 2.1 ?? 1 ? CS1180 ?? 1 CS1180 ? ? ??? avdd -0.3 6 v avdd to agnd ??? dvdd -0.3 6 v dvdd to dgnd ?? dvgnd -0.3 0.3 v dgnd to agnd ?? 100 ma input current momentary ?? 10 ma input current continuous ??? -0.3 dvdd+0.3 v ??? -0.3 dvdd+0.3 v digital output voltage to dgnd 150 o c max. junction temperature ? -40 85 o c operating temperature ? -60 150 o c storage temperature ???? 240 o c lead temperature (soldering, 10s) 2.2 CS1180 ? 2 ? CS1180 ? 2 CS1180 ? ? vih 0.8dvdd dvdd v vil dgnd 0.2dvdd v voh dvdd-0.4 dvdd+0.4 v ioh=1ma vol dgnd dgnd+0.4 v iol=1ma iih 10 ua vi=dvdd iil -10 ua vi=dgnd fosc 1 5 mhz tosc 200 1000 ns ? 1 CS1180 ??? cmos ??? ? ? ? ? ? ? 6 6 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 2.3 CS1180 ????? CS1180 ??? 2 ???? 3 ? 4 ?2 CS1180 ?? 3 CS1180 ? ? ? ? 1 dgnd ? 2 mclk ??1 10mhz 3 xtal ? 2 4 dgnd ? 5 refp ??? 6 refn ??? 7 ain0 ? + 8 ain1 ? - 9 agnd ? 10 avdd ??? 2.7v~5.25v 11 cs ???? 12 sdi 13 sdo 14 sclk ??? schmitt 15 drdy ????? 16 dvdd ??? 2.7~5.25v ? ? ? ? ? ? 7 7 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 CS1180 ?? ssop16 ????-40 85 4 4 CS1180 ? ? ?? ?? CS1180 ssop16 40 85 ? ? ? ? ? ? 8 8 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 2.4 CS1180 5 avdd= dvdd = 5v ? CS1180 ? ? ? buffer ? agnd-0.1 avdd+0.1 v ?? buffer agnd+0.4 avdd-1.5 v ran=0 vref/pga v ? (ain+) - (ain-) ran=1 vref/(2pga) v buffer ? 5/pga m? buffer 5 g ? f data = 3.75hz 1.65 hz f data = 7.50hz 3.44 hz ?-3db f data = 15.0hz 3.7 hz pga ?Z 1 128 9 pf ? ? ??t = 25 5 pa ? ? 24 bits ? 0.0015 % of fs ? 8 ppm of fs ?? 0.02 ppm of fs/ 0.005 % ? 1.0 ppm/ ? 100 db f cm = 60hz, f data = 15hz 130 db ?? f cm = 50hz, f data = 15hz 120 db f cm = 60hz, f data = 15hz 100 db ?? f sig = 50hz, f data = 15hz 100 db ?? ?? ? 80 95 db ran = 0 0.1 2.5 2.6 v vref refp refn ran = 1 0 2.5 avdd v ran = 0 0 avdd v refp refn ? ran = 1 0.1 avdd v ? 120 db ?? f vrefcm = 60hz 120 db ? ?? 1.3 ua ?? avdd 4.75 5.25 v pga = 1buffer ? 350 ua pga = 1buffer 470 ua pga = 128 buffer ? 370 ua ??? pga = 128 buffer 630 ua ? ?? ??? 1.40 ma ? ? ? ? ? ? 9 9 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 6 avdd= dvdd = 3v ? CS1180 ? ? ? buffer ? agnd-0.1 avdd+0.1 v ?? buffer agnd+0.3 avdd-1.5 v ran=0 vref/pga v ? (ain+) - (ain-) ran=1 vref/(2pga) v buffer ? 5/pga m? buffer 5 g ? f data = 3.75hz 1.65 hz f data = 7.50hz 3.44 hz ?-3db f data = 15.0hz 14.6 hz pga ?Z 1 128 9 pf ? ? ??t = 25 5 pa ? ? 24 bits ? 0.0015 % of fs ? 15 ppm of fs ?? 0.04 ppm of fs/ 0.01 % ? 1.0 ppm/ ? 100 db f cm = 60hz, f data = 15hz 130 db ?? f cm = 50hz, f data = 15hz 120 db f cm = 60hz, f data = 15hz 100 db ?? f sig = 50hz, f data = 15hz 100 db ?? ?? ? 75 90 db ran = 0 0.1 1.25 1.30 v vref refp refn ran = 1 0 2.5 2.6 v ran = 0 0 avdd v refp refn ? ran = 1 0.1 avdd v ? 120 db ?? f vrefcm = 60hz 120 db ? ?? 0.65 ua ?? avdd 2.7 3.3 v pga = 1buffer ? 330 ua pga = 1buffer 450 ua pga = 128 buffer ? 350 ua ??? pga = 128 buffer 630 ua ? ?? ??? 1.1 ma ? ? ? ? ? ? 1 1 0 0 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 2.5 CS1180 ? CS1180 ??? 3 ???? 7 t cs sclk sdi sdo t t msb lsb msb (1) t spw t dso t dsoh t cs2 t dsot t sdelay t dio lsb (1) note: (1) bit order=0; t 1 t 2 t 3 t 2 t 4 sclk sclk reset waveform CS1180 reset on the falling edge t 8 t data t 6 t 7 300 * t osc < t 1 < 500 * t osc t 2 => 5 * t osc 550 * t osc < t 3 < 750 * t osc 1050 * t osc < t 4 <1250 * t osc drdy sclk s t cs1 t spw ds dh ?3 CS1180 ?? ? ? ? ? ? ? 1 1 1 1 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 7 CS1180 ? ? ? t s sclk ? 4 tosc t spw sclk ????? 200 ns t cs1 ??? cs ?? sclk ??? 0 ns t ds sdi ???? sclk ?? 50 ns t dh sdi ??? 50 ns t dio ??? sdi ? sclk ? sdo ?? sclk ?? rdata, rreg, wreg 50 tosc t dso sdo sclk ?? 50 ns t dsoh sdo ??? 0 t dsot sdo ?? sclk ??? 6 10 tosc t cs2 ??? cs ????? sclk ? 0 ns rreg, wreg, sync, rdata, stopc 4 tosc ocalsys, gcalsys 8 drdy t sdelay ??? sclk ?? ???? sclk ?? reset?? sclk 16 tosc rst ? reset ?? t ?????? 5000 tosc 6 t dor dor 4 tosc 7 t drdy ???? sclk ? 0 tosc 8 ? ? ? ? ? ? 1 1 2 2 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 3 CS1180 ? 3.1. ??buffer ????(buffer)?? 5m / pga ????? ??????? 5g ????? acr ? acr ? buf ??? ?? ????????? pga ?pga 1 ?? 50ua pga 128 ??? 150ua ?????????????? agnd+0.3v avdd-1.5v 3.2. ?? pga ?????? 1 2 4 8 1632 64 128 ?? pga ?? pga 1 5v ????? 4.7uv pga 128 39mv ???? 75nv ? 3.3. modulator CS1180 ??? 2 ? ????? speed acr ? bit 5 ?? 8 ?? ?hz ? mhz speed adc ? khz dr 00 dr 01 ?? hz dr 10 0 19.200 15 7.5 3.75 50/60 2.4576 1 9.600 7.5 3.75 1.875 25/30 0 38.400 30 15 7.5 100/120 4.9152 1 19.200 15 7.5 3.75 50/60 3.4. calibration ???????? offset calibration ?? gain calibration ??drdy ???? ad ? ? ???????pga ???? ?? drdy ??? drdy ?????? ????2?????? ??? 3.3.1 ?? system calibration ?????????? ????? ocalsys gcalsys ocalsys ? gcalsys ?? 8 tdada ? ? ? ? ? ? 1 1 3 3 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 ??ocalsys ?????? 0 ??? ?? occ ???? ?sysgcal ? ?full scale ??? ??? gcc ???? 3.4 ?? external voltage reference CS1180 ????? acr ?? refp refn ??????????? 9 ?? ran ?? ran acr.2 ??v ??v ? 0 5 <=2.5 1 5 <=5 0 3.0 <=1.25 1 3.0 <=2.5 3.5 ??? clock unit CS1180 ?]????? mclk ??? xtal ????? mclk xtal ??? 10 20pf ?? c2 c1 mclk xtal ?4 ?? 3.6 ? (fir) CS1180 ??? fir ?fir ?????? 2.4576m ?? CS1180 ??? 15hz 7.5hz 3.75hz ?fir ??? 50hz 60hz ????? ????????????? ???????????? 3.6864m ???? ( 3.6864mhz/2.4576mhz ) 15hz = 22.5hz ??? ( 3.6864mhz/2.4576mhz ) ( 50hz 60hz ) ( 75hz 90hz ) ? ? ? ? ? ? 1 1 4 4 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 3.7 ?? ( spi ) CS1180 ? spi ???? CS1180 ??????? ? spi ? cs sclk sdi sdo 3.7.1 ??? ( cs ) CS1180 ?????? cs ????????cs ????? cs ??? spi ??cs ????? cs ????spi ?????? CS1180 ? ??? 3.7.2 ? ( sclk ) sclk ??? sdi sdo ??????? sclk ??? 3 drdy ?? sclk ????? sclk ?spi ??????sclk ????? ?? reset ? 3.7.3 ( sdi ) ( sdo ) sdi sdo ??????sdo ?? sdi sdo ????? 3.7.4 ? ( drdy ) drdy ?????????? dor ? ?drdy ???????? dor ??? drdy ??? dor ??? drdy ????? dor ????? dor ?? dor ???? drdy ??? acr ? bit 7 3.8 ?y??? reset CS1180 ??????? CS1180 ? reset ?? sclk ??? ( sclk reset CS1180 ?? ) ? ? ? ? ? ? 1 1 5 5 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 4 CS1180 ? CS1180 ???????????? ??? 4.1 ? ??? 11 ? 10 ??? ?(h) ? 7 6 5 4 3 2 1 0 00 setup id3 id2 id1 id0 pga2 pga1 pga0 01 mux 0 0 0 0 0 0 0 1 02 acr speed buf bitor ran dr1 dr0 bu/ drdy 03 odac chsel iset1 iset0 04 05 06 07 occ0 occ07 occ06 occ05 occ04 occ03 occ02 occ01 occ00 08 occ1 occ17 occ16 occ15 occ14 occ13 occ12 occ11 occ10 09 occ2 occ27 occ26 occ25 occ24 occ23 occ22 occ21 occ20 0a gcc0 gcc07 gcc06 gcc05 gcc04 gcc03 gcc02 gcc01 gcc00 0b gcc1 gcc15 gcc14 gcc13 gcc12 gcc11 gcc10 gcc09 gcc08 0c gcc2 gcc23 gcc22 gcc21 gcc20 gcc19 gcc18 gcc17 gcc16 0d dor2 dor23 dor22 dor21 dor20 dor19 dor18 dor17 dor16 0e dor1 dor15 dor14 dor13 dor12 dor11 dor10 dor09 dor08 0f dor0 dor07 dor06 dor05 dor04 dor03 dor02 dor01 dor00 ? ? ? ? ? ? 1 1 6 6 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 4.2 ?? setup ?? 00h ? xxxx0000 pga ? setup register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 id3 id2 id1 id0 pga2 pga1 pga0 setup. 7 4 : ? id ?? setup.3 : setu.2 0 pga2/pga1/pga0 ??? (programmable gain amplifier gain selection) 000 1 ?? 001 2 010 4 011 8 100 16 101 32 110 64 111 128 mux ??01h ? 01h ??setup register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 0 0 0 0 0 0 1 ??? 00h ?? adc ????? adc ? ? adc ??????? 01h ? ? ? ? ? ? 1 1 7 7 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 acr ??02 h ?x0 h ?? analog control register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 drdy bu/ speed buf bitor ran dr1 dr0 drdy drdy acr.7 : ? data ready ?? ?? bu/ acr.6 : ?? data format 0 ???? fsr 7fffffh zero 000000h fsr 800000h; 1 ? fsr ffffffh zero 000000h fsr 000000h; acr.5 : speed ????? modulator clock speed 0 fosc/128 ?? 1 fosc/256 acr.4 : buf ??? buffer enable acr.3 : bitor bit ? 0 = ??? 1 = ? acr.2 : ran ?? select 0 ? full scale ?/ v ?? ref 1 ? full scale ?/ v /2 ref acr.1-0 : dr1/dr0 ? data rate 00 15hz ?? 01 7.5hz 10 3.75hz; 11= reserved ? ? ? ? ? ? 1 1 8 8 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 odac ?? 03 h ?00 h offset dac msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 chsel iset1 iset0 iset1-0 ???? 00 ??? 10ua ?? 01 10 ?? 25 11 ?? 50 ?y???????? CS1180 ? chsel ???? 0 ???? 1/2 pga=1~128 ??? 1 ??????pga 2~128 ? ? chsel ? 0 ????? ??????? chsel ? 1 ???? ?? occ0 ?? 07 h ? 00 h ?? offset calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 occ07 occ06 occ05 occ04 occ03 occ02 occ01 occ00 occ0 occ1 occ2 ?? occ23~0 24 occ23 msb occ00 lsb ? occ1 ?? 08 h ?00 h ?? offset calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 occ15 occ14 occ13 occ12 occ11 occ10 occ09 occ08 occ0 occ1 occ2 ?? occ23~0 24 occ23 msb occ00 lsb ? occ2 ?? 09 h ?00 h ?? offset calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 occ23 occ22 occ21 occ20 occ19 occ18 occ17 occ16 occ0 occ1 occ2 ?? occ23~0 24 occ23 msb occ00 lsb ? gcc0 ?? 0a h ?59 h ? gain calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 gcc07 gcc06 gcc05 gcc04 gcc03 gcc02 gcc01 gcc00 gcc0 gcc1 gcc2 ?? gcc23~0 24 gcc23 msb gcc00 lsb ? ? ? ? ? ? 1 1 9 9 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 gcc1 ?? 0b h ?55 h ? gain calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 gcc15 gcc14 gcc13 gcc12 gcc11 gcc10 gcc09 gcc08 gcc0 gcc1 gcc2 ?? gcc23~0 24 gcc23 msb gcc00 lsb gcc2 ?? 0c h ?55 h ? gain calibration coefficient msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 gcc23 gcc22 gcc21 gcc20 gcc19 gcc18 gcc17 gcc16 gcc0 gcc1 gcc2 ?? gcc23~0 24 gcc23 msb gcc00 lsb dor2 ??0d h ?00 h ??? data output register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 dor 23 dor22 dor 21 dor 20 f dor 19 dor 18 dor 17 dor 16 dor 0 dor 1 dor 2 ?? dor23~0 24 dor23 msb dor00 lsb ?00 dor1 ??0e h h ??? data output register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 dor15 dor14 dor13 dor12 dor11 dor10 dor09 dor08 dor 0 dor 1 dor 2 ?? dor23~0 24 dor23 msb dor00 lsb dor0 ??0f h ?00 h ??? data output register msb lsb bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 dor07 dor06 dor05 dor04 dor03 dor02 dor01 dor00 dor 0 dor 1 dor 2 ?? dor23~0 24 dor23 msb dor00 lsb ? ? ? ? ? ? 2 2 0 0 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 5 CS1180 ? CS1180 ??????????????? ???? reset ?? wreg ? n = 0 127 r = ? ( 0 15 ) x = ? 5.1 CS1180 ? 12 ? CS1180 ?? 11 CS1180 ? ? 0 000 0001 ( 01 rdata -- dor ?? ) h 0 001 r r r r ( 1x rreg xxxx_nnnn ??rrrr? h ) 0 101 r r r r ( 5x wreg xxxx_nnnn ??rrrr h ) 1 111 0011 ( f3 ocalsys ??? ) h 1 111 0100 ( f4 gcalsys ?? ) h 1 111 1011 ( fb wakeup ??????? ) h 1 111 1110 ( fe reset ???? ) h ??????? acr ? bitorder ? ? ? ? ? ? 2 2 1 1 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 5.2 CS1180 ?? rdata ? dor ??? ad ???? 24bit ?? 1 ? 0000 0001 ? rreg ??? 16 ?????????? ???? 1 ????? ??????? r, n ?? 2 ? 0001 rrrr xxxx nnnn ? ???????? 01 h ( mux ) wreg ? ?????????? ???? 1 r, n ?? 2 ? 0101 rrrr xxxx nnnn ? ??????? 04 h ( dio ) ocalsys ??? ????????? 0 CS1180 occ ??occ ???? ?? 0 ? occ ???? ?? 1 ? 1111 0011 ? ? ? ? ? ? ? 2 2 2 2 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 gcalsys ?? ????????? CS1180 gcc ?occ ???? ????gcc ???? ?? 1 ? 1111 0100 ? wakeup ????? CS1180 ??? ?? 1 ? 1111 1011 ? reset???? ??????? rdatac ? ?? 1 ? 1111 1110 ? ? ? ? ? ? ? 2 2 3 3 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 6 CS1180 ?? CS1180 ssop16 ??? ? ? ? ? ? ? 2 2 4 4 - - 2 2 5 5
c c s s 1 1 1 1 8 8 0 0 CS1180 sop16 ??? ? ? ? ? ? ? 2 2 5 5 - - 2 2 5 5

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