AD7793BRUZ

3ཚ‫ڢ‬Ă‫گ‬ሯำĂ‫ࡼࠀگ‬Ă16/24࿋∑-Δ ADCాዃೌాᅏ՗‫ٷݣ‬ഗࢅएጚ‫ۉ‬უᇸ AD7792/AD7793 ࠀీ઀཮ ༬Ⴀ ᆌᆩ ඤ‫ۉ‬౾֪ଉ RTD֪ଉ ඤ௺‫ۉ‬ፆ֪ଉ ഘ༹‫ݴ‬ဆ ߾ᄽࡗ‫ײ‬੦዆ ᅏഗᅏ՗ Սၻ๕ᅏഗᅏ՗ ეᅂ‫ݴ‬ဆ ዇ీ݀พऐ ᅂ၎/ഘ၎෥೷ᅏ 6࿋DVM AVDD REFIN(+)/AIN3(+) REFIN(–)/AIN3(–) VBIAS BAND GAP REFERENCE GND AVDD AIN1(+) AIN1(–) AIN2(+) AIN2(–) MUX BUF Σ-Δ ADC IN-AMP SERIAL INTERFACE AND CONTROL LOGIC AVDD GND IOUT1 INTERNAL CLOCK IOUT2 CLK AD7792: 16-BIT AD7793: 24-BIT DOUT/RDY DIN SCLK CS DVDD 04855-001 ፌߛ23࿋ᆶၳ‫ݴ‬Ր୲ ਩‫(ߵݛ‬RMS)ሯำ 40 nV)4.17 Hz้* 85 nV)16.7 Hz้* ‫ୁۉ‬ǖ400 μA)‫ۆ‬႙ኵ* ู‫ۉ‬ఇ๕ǖ1 μA)ፌ‫ٷ‬ኵ* ‫گ‬ሯำ੗Պ‫ײ‬ሺᅮᅏ՗‫ٷݣ‬ഗ ‫ټ‬ဤएጚ‫ۉ‬უᇸLj‫ۆ‬႙࿒೏ኵྺ4 ppm/°C ߸ႎ໏୲ǖ4.17 Hz዁470 Hz 3ֶ߲‫ݴ‬๼෇ ాև้ዓና‫ږ‬ഗ 50 Hz/60 Hzཞ้ᅞ዆ ੗Պ‫ୁۉײ‬ᇸ ೌాೋዃ‫ۉ‬უ݀ิഗ භ܏‫ୁۉ‬ ‫ۉ‬ᇸ‫ۉ‬უǖ2.7 V዁5.25 V ࿒‫ྷݔ܈‬ǖ-40ņ዁+105ņ ‫܀‬૬থ੨‫ۉ‬ᇸ 16ᆅগTSSOP‫ހ‬ጎ থ੨ ! ෙ၍๕‫ز‬ႜথ੨ SPI®ĂQSPI™ĂMICROWIRE™ࢅDSPग़ඹ SCLKᆅগా‫ڦ‬แ௢༬‫݀ة‬ GND ཮2/! ߁ຎ! AD7792/AD7793ྺ๢ࢇߛ৛‫֪܈‬ଉᆌᆩ‫ࡼࠀگڦ‬Ă‫گ‬ሯ ำĂྜኝఇెമ‫܋‬Ljాዃᅃ߲‫گ‬ሯำĂ‫ټ‬ᆶෙֶ߲‫ݴ‬ఇె ๼෇‫ڦ‬16࿋/24࿋Σ-Δ႙ADCă໲࣏ण‫ׯ‬କೌా‫گ‬ሯำᅏ՗ ‫ٷݣ‬ഗLjᅺܸ੗኱থ๼෇ၭ႑ࡽă‫ړ‬ሺᅮยዃྺ64Ă߸ႎ ໏୲ྺ4.17 Hz้Lj਩‫(ߵݛ‬RMS)ሯำྺ40 nVă ଇ੼ഗॲ߳ጲాዃᅃ߲৛௢‫گ‬ሯำĂ‫گ‬೏ᅎాև‫ټ‬ဤएጚ ‫ۉ‬უᇸLjܸ൐ᄺ੗֑ᆩᅃ߲ྔևֶ‫ݴ‬एጚ‫ۉ‬უăഄ໲ೌా ༬Ⴀ࣏Ԉઔ੗Պ‫ײ‬घ૤‫ୁۉ‬ᇸĂභ܏‫ୁۉ‬ᇸࢅೋዃ‫ۉ‬უ݀ ิഗăೋዃ‫ۉ‬უ݀ิഗᆩᇀॽཚ‫ࠌڦڢ‬ఇ‫ۉ‬უยዃྺ AVDD/2ă ഗॲ੗ᅜ֑ᆩాև้ዓईྔև้ዓ߾ፕLj๼‫؜‬ຕ਍໏୲੗ ཚࡗ෉ॲՊ‫ײ‬ยዃLj੗ሞ4.17 Hz዁470 Hz‫ాྷݔڦ‬Վࣅă ഗॲ֑ᆩ2.7 V዁5.25 V‫ۉ‬ᇸࠃ‫ۉ‬Lj‫ۆ‬႙ࠀࡼྺ400 μALj֑ ᆩ16ᆅগTSSOP‫ހ‬ጎă Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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ADIዐ࿔Ӳຕ਍๮֩๟ᆈ࿔Ӳຕ਍๮֩‫ڦ‬ᅳ࿔Lj৤൩ଌ঴‫݋‬ᅳዐ੗ీ٪ሞ‫ڦ‬ᇕჾፇኯई‫݋‬ᅳ‫ٱ‬ဃLjADIփ‫݋ܔ‬ᅳዐ٪ሞ‫ֶڦ‬ᅴईᆯׂُิ‫ٱڦ‬ဃ޶ሴăසႴඓණඪࢆَᇕ‫ڦ‬ጚඓႠLj൩֖੊ADI༵ࠃ ‫ڦ‬ፌႎᆈ࿔Ӳຕ਍๮֩ă AD7792/AD7793 ణ୤! ༬Ⴀ .................................................................................................. 1 ! ฿ۙस٪ഗ ............................................................................ 19 ᆌᆩ ................................................................................................... 1 ! ஢ଉ‫ײ‬स٪ഗ ....................................................................... 19 ࠀీ઀཮ ........................................................................................... 1 ADC‫ۉ‬ୟ႑တ ............................................................................... 20 ߁ຎ ................................................................................................... 1 ! ߁ຎ ......................................................................................... 20 Ⴊ۩૦๏ .......................................................................................... 2 ! ຕጴথ੨ ................................................................................ 21 रຍࡀ߭ ........................................................................................... 3 ‫ۉ‬ୟ௮ຎ ........................................................................................ 24 ้Ⴞ༬Ⴀ ........................................................................................... 6 ! ఇె๼෇ཚ‫ ڢ‬....................................................................... 24 ้Ⴞ཮ ...................................................................................... 7 ! ᅏ՗‫ٷݣ‬ഗ ............................................................................ 24 ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ............................................................................. 8 ! ມटႠ/‫ڇ‬टႠದዃ ............................................................. 24 ESDয়ߢ ................................................................................... 8 ! ຕ਍๼‫؜‬Պஓ ....................................................................... 24 ᆅগದዃࢅࠀీ௮ຎ ..................................................................... 9 ! භ܏‫ ୁۉ‬................................................................................ 25 ๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭ .............................................................. 11 ! घ૤‫ ୁۉ‬................................................................................ 25 ! ྔևएጚ‫ۉ‬უᇸ ................................................................... 11 ! ೋዃ‫ۉ‬უ݀ิഗ ................................................................... 25 ! ాևएጚ‫ۉ‬უ ....................................................................... 12 ! एጚ‫ۉ‬უ ................................................................................ 25 ‫ۆ‬႙߾ፕ༬Ⴀ ................................................................................ 13 ! ް࿋ ......................................................................................... 25 ! AVDD॔੦ഗ .......................................................................... 26 ೌాस٪ഗ .................................................................................... 14 ! ཚ႑स٪ഗ ............................................................................ 14 ! ၯጚ ......................................................................................... 26 ! ጒༀस٪ഗ ............................................................................ 15 ! থ‫ࢅں‬քਆ ............................................................................ 26 ! ఇ๕स٪ഗ ............................................................................ 15 ᆌᆩ႑တ ........................................................................................ 28 ! ದዃस٪ഗ ............................................................................ 17 ! ૧ᆩඤ‫ۉ‬౾֪ଉ࿒‫ ܈‬.......................................................... 28 ! ຕ਍स٪ഗ ............................................................................ 18 ! ૧ᆩRTD֪ଉ࿒‫ ܈‬............................................................... 29 IDस٪ഗ ................................................................................ 18 ྔႚ؅٫ ........................................................................................ 30 IOस٪ഗ ............................................................................... 18 ! ۩ࠔኸళ ................................................................................ 30 Ⴊ۩૦๏ 2007౎3ሆ—Ⴊ۩ӲA዁Ⴊ۩ӲB ߸ႎ߭๕ .................................................................................... ཚᆩ 2005౎4ሆ—Ⴊ۩Ӳ0዁Ⴊ۩ӲA ߸߀ࠀీఇ੷઀཮ ......................................................................... 1 ߸߀“ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ”և‫ ݴ‬........................................................ 8 ߸߀रຍࡀ߭ ................................................................................. 3 ߸߀཮17 ......................................................................................... 22 ߸߀रຍࡀ߭࿂ጀ1 ....................................................................... 5 ߸߀ຕ਍๼‫؜‬Պஓև‫ ݴ‬.............................................................. 24 ߸߀՗5Ă՗6Ă՗7 ..................................................................... 11 ߸߀ၯጚև‫ ݴ‬................................................................................ 26 ߸߀՗8Ă՗9Ă՗10 ................................................................... 12 ߸߀۩ࠔኸళ ................................................................................ 30 ߸߀՗16 ......................................................................................... 16 ߸߀“߁ຎ”և‫ ݴ‬............................................................................ 20 ॽ“ᆌᆩ”և‫ڦݴ‬ఁ‫“ྺ߀߸׬‬ᆌᆩ႑တ” ................................. 29 ߸߀“۩ࠔኸళ”և‫ ݴ‬................................................................... 30 Rev. B | Page 2 of 32 AD7792/AD7793  रຍࡀ߭ ‫ݥأ‬ଷᆶຫ௽LjAVDD = 2.7 V዁5.25 VĂDVDD = 2.7 V዁5.25 VĂGND = 0 VLj໯ᆶࡀ߭਩၎‫ܔ‬ᇀTMIN዁TMAXܸჾă ՗1. AD7792B/AD7793B 1 ‫ڇ‬࿋ 4.17 ዁ 470 24 16 HzLjՔ‫׬‬ኵ ࿋Ljፌၭኵ ࿋Ljፌၭኵ ±15 ! ‫ۉ‬ᇸᅞ዆ ±1 ±10 ±10 ±1 ±3 100 ppm(஢ଉ‫ڦྷݔײ‬ ӥྤ‫)୲ݴ‬Ljፌ‫ٷ‬ኵ μVLj‫ۆ‬႙ኵ nV/°CLj‫ۆ‬႙ኵ μVLj‫ۆ‬႙ኵ ppm/°CLj‫ۆ‬႙ኵ ሺᅮ = 1዁16Ljྔևएጚ‫ۉ‬უ ppm/°CLj‫ۆ‬႙ኵ ሺᅮ = 32዁128Ljྔևएጚ‫ۉ‬უ AIN = 1 V/ሺᅮLjሺᅮ ≥ 4Ljྔևएጚ‫ۉ‬უ dBLjፌၭኵ ఇె๼෇ ! ֶ‫ݴ‬๼෇‫ۉ‬უ‫ྷݔ‬ ±VREF/ሺᅮ V nom VREF = REFIN(+) − REFIN(−)Ljईాևएጚ‫ۉ‬უLj ሺᅮ = 1዁128 GND – 30 mV AVDD + 30 mV GND + 100 mV AVDD – 100 mV GND + 300 mV AVDD – 1.1 0.5 V min V max V min V max V min V max V min ሺᅮ = 1ई2 ±1 ±250 ±2 nA max pA max pA/°C typ ሺᅮ = 1ई2Lj߸ႎ໏୲ < 100 Hz ሺᅮ = 4዁128Lj߸ႎ໏୲ < 100 Hz ±400 ±50 nA/V typ pA/V/°C typ 65 80 90 dB min dB min dB min ‫ۆ‬႙ኵ80 dBLj50±1 HzLj60±1 HzLjFS[3:0] = 10106 ‫ۆ‬႙ኵ90 dBLj50 ± 1 HzLjFS[3:0] = 10016 ‫ۆ‬႙ኵ100 dBLj60 ± 1 HzLjFS[3:0] = 10006 80 94 90 dB min dB min dB min ‫ۆ‬႙ኵ90 dBLj50±1 HzLj60±1 HzLjFS[3:0] = 10106 ‫ۆ‬႙ኵ100 dBLj50 ± 1 HzLjFS[3:0] = 10016 ‫ۆ‬႙ኵ100 dBLj60 ± 1 HzLjFS[3:0] = 10006 100 100 100 dB min dB min dB min AIN = 1 V/ሺᅮLjሺᅮ ≥ 4 50 ± 1 HzLj60 ± 1 HzLjFS[3:0] = 10106 50±1 Hz (FS[3:0]=1001)6, 60±1 Hz (FS[3:0]=1000)6 ֖ຕ! ADCཚ‫ڢ‬ ! ๼‫߸؜‬ႎ໏୲ ! ࿮฿ஓ2 ! ‫ݴ‬Ր୲ ! ๼‫؜‬ሯำᇑ߸ႎ໏୲ ! ओ‫ݥݴ‬၍Ⴀ ! ! ! ! ฿ۙဃֶ3 ฿ۙဃֶ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ஢ଉ‫ײ‬ဃֶ3, 5 ሺᅮ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ! ਨ‫ܔ‬AIN‫ۉ‬უ၌ኵ2 ! ࿮࣐؋ఇ๕ ! ࣐؋ఇ๕ ! ᅏ՗‫ٷݣ‬ഗᆶၳ ! ࠌఇ‫ۉ‬უ(VCM) ఇె๼෇‫ୁۉ‬ ! ࣐؋ఇ๕ईᅏ՗‫ٷݣ‬ഗᆶၳ ! ! ೝ਩๼෇‫ୁۉ‬2 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ೝ਩๼෇‫ୁۉ‬࿒೏ ࿮࣐؋ఇ๕ ! ೝ਩๼෇‫ୁۉ‬ ! ೝ਩๼෇‫ୁۉ‬࿒೏ ‫ز‬ఇ߅ඡᅞ዆2 ! ాև้ዓ ! ! ሞ50 HzĂ60 Hzཉॲူ ! ! ሞ50 Hzཉॲူ ! ! ሞ60 Hzཉॲူ ! ྔև้ዓ ! ! ሞ50 HzĂ60 Hzཉॲူ ! ! ሞ50 Hzཉॲူ ! ! ሞ60 Hzཉॲူ ࠌఇᅞ዆ ! ! ሞ኱ୁཉॲူ ! ! ሞ50 HzĂ60 Hzཉॲူ2 ! ! ሞ50 HzĂ60 Hzཉॲူ2 Rev. B | Page 3 of 32 ֪๬ཉॲ/ጀ๥ fADC< 242 HzLjAD7793 AD7792 ९“๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭” ९“๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭” ሺᅮ = 1ई2 ሺᅮ = 4዁128 VCM = (AIN(+) + AIN(−))/2Ljሺᅮ = 4዁128 ሺᅮ = 1ई2 ๼෇‫ୁۉ‬ໜ๼෇‫ۉ‬უܸՎࣅ AD7792/AD7793 ֖ຕ! एጚ‫ۉ‬უ ! ాևएጚ‫ۉ‬უ ! ! ాևएጚ‫ۉ‬უ‫؛‬๔৛‫܈‬ ! ! ాևएጚ‫ۉ‬უ࿒೏2 AD7792B/AD7793B 1 ‫ڇ‬࿋ ֪๬ཉॲ/ጀ๥ 1.17 ± 0.01% 4 15 85 VLjፌၭኵ/ፌ‫ٷ‬ኵ ppm/°CLj‫ۆ‬႙ኵ ppm/°CLjፌ‫ٷ‬ኵ dBLj‫ۆ‬႙ኵ AVDD = 4 V, TA = 25°C 2.5 0.1 AVDD VLjՔ‫׬‬ኵ VLjፌၭኵ VLjፌ‫ٷ‬ኵ REFIN = REFIN(+) − REFIN(−) ! ! ೝ਩एጚ๼෇‫ୁۉ‬ ! ! ೝ਩एጚ๼෇‫ୁۉ‬࿒೏ GND − 30 mV AVDD + 30 mV 400 ±0.03 VLjፌၭኵ VLjፌ‫ٷ‬ኵ nA/VLj‫ۆ‬႙ኵ nA/V/°CLj‫ۆ‬႙ኵ ! ! ‫ز‬ఇ߅ඡᅞ዆ ! ! ࠌఇᅞ዆ Same as for analog inputs 100 dBLj‫ۆ‬႙ኵ ! ! ‫ۉ‬ᇸᅞ዆ ྔևएጚ‫ۉ‬უᇸ ! ! ྔևREFIN‫ۉ‬უ ! ! एጚ‫ۉ‬უ‫ྷݔ‬2 ! ! ਨ‫ܔ‬REFIN‫ۉ‬უ၌ኵ2 घ૤‫ୁۉ‬ᇸ ! )IEXC1ࢅIEXC2* ! ๼‫ୁۉ؜‬ ! ‫؛‬๔ඹֶ(25°C) ! ࿒೏ ! ‫ୁۉ‬೅ದ ! ࿒೏೅ದ ! ‫ۉ‬უۙኝ୲(VDD) ! ޶ሜۙኝ୲ ! ๼‫ۉ؜‬ᇸ‫ۉ‬უ ࿒‫ߌد܈‬ഗ! !৛‫܈‬ !ଳ௺‫܈‬ ೋዃ‫ۉ‬უ݀ิഗ VBIAS VBIAS݀ิഗഔ‫้ۯ‬क़ 10/210/1000 ±5 200 ±0.5 50 2 0.2 AVDD − 0.65 AVDD − 1.1 GND − 30 mV μALjՔ‫׬‬ኵ %Lj‫ۆ‬႙ኵ ppm/°CLj‫ۆ‬႙ኵ %Lj‫ۆ‬႙ኵ ppm/°CLj‫ۆ‬႙ኵ %/VLj‫ۆ‬႙ኵ %/VLj‫ۆ‬႙ኵ VLjፌ‫ٷ‬ኵ VLjፌ‫ٷ‬ኵ VLjፌၭኵ ±2 0.81 °CLj‫ۆ‬႙ኵ mV/°CLj‫ۆ‬႙ኵ AVDD/2 See Figure 10 VLjՔ‫׬‬ኵ ms/nFLj‫ۆ‬႙ኵ ాև/ྔև้ዓ ాև้ዓ ೕ୲2 ቞੣Բ ྔև้ዓ ೕ୲ 64 ± 3% 50:50 kHzLjፌၭኵ/ፌ‫ٷ‬ኵ %Lj‫ۆ‬႙ኵ 64 kHzLjՔ‫׬‬ኵ ቞੣Բ 45:55 to 55:45 %Lj‫ۆ‬႙ኵ 0.8 0.4 2.0 VLjፌ‫ٷ‬ኵ VLjፌ‫ٷ‬ኵ VLjፌၭኵ இड๼෇ CS2 VINLLj๼෇‫ۉگ‬ೝ VINHLj๼෇ߛ‫ۉ‬ೝ Rev. B | Page 4 of 32 ‫ړ‬VREF = AVDD้Ljසࡕᅏ՗‫ٷݣ‬ഗᆶၳLj ሶՂႷॽֶ‫ݴ‬๼෇၌዆ሞ0.9 × VREF/ሺᅮᅜా IEXC1ᇑIEXC2‫ڦ‬೅ದǗVOUT = 0 V AVDD = 5 V ± 5% ໯჋‫ྺୁۉ‬10 μAई210 μA ໯჋‫ྺୁۉ‬1 mA ኍ‫ܔ‬ᆩࢽၯጚ࿒‫ߌد܈‬ഗ‫ڦ‬൧઄ ൽਦᇀAINᆅগฉ‫ۉڦ‬ඹኵ ๑ᆩ2‫ݴ‬ೕࠀీ้)࿋CLK1 = CLK0 = 1*Lj ੗ᅜ֑ᆩ128 kHzྔև้ዓ ๢ᆩᇀ64 kHzྔև้ዓǗසࡕ๟128 kHz้ዓLj ቞੣Բᄲ൱੗ᅜฎ‫گ‬ DVDD = 5 V DVDD = 3 V DVDD = 3 V or 5 V AD7792/AD7793 ֖ຕ! SCLKĂCLKࢅDIN )แ௢༬‫݀ة‬ഗ๼෇*2 VT(+) VT(–) VT(+) −VT(−) VT(+) VT(–) VT(+) −VT(−) ๼෇‫ୁۉ‬ ๼෇‫ۉ‬ඹ இड๼‫(؜‬ԈઔCLK) VOHLj๼‫ۉߛ؜‬უ2 VOLLj๼‫ۉگ؜‬უ2 VOHLj๼‫ۉߛ؜‬უ2 VOLLj๼‫ۉگ؜‬უ2 ! ‫ޝ‬੣ༀ୑‫ୁۉ‬ ! ‫ޝ‬੣ༀ๼‫ۉ؜‬ඹ ! ຕ਍๼‫؜‬Պஓ ဣཥၯጚ2 ஢ଉ‫ײ‬ၯጚ၌ኵ ଭ‫ۉ‬ೝၯጚ၌ኵ ๼෇‫ྷݔ‬ ‫ۉ‬ᇸᄲ൱7 ‫ۉ‬ᇸ‫ۉ‬უ AVDD዁GND DVDD዁GND ‫ۉ‬ᇸ‫ୁۉ‬ IDD‫ୁۉ‬ IDD(ู‫ۉ‬ఇ๕) 1 2 3 4 5 6 7 AD7792B/AD7793B 1 ‫ڇ‬࿋ ֪๬ཉॲ/ጀ๥ 1.4/2 0.8/1.7 0.1/0.17 0.9/2 0.4/1.35 0.06/0.13 V min/V max V min/V max V min/V max V min/V max V min/V max V min/V max DVDD = 5 V DVDD = 5 V DVDD = 5 V DVDD = 3 V DVDD = 3 V DVDD = 3 V ±10 10 μA max pF typ VIN = DVDD ई GND ໯ᆶຕጴ๼෇! DVDD − 0.6 0.4 4 0.4 V min V max V min V max DVDD = 3 V, ISOURCE = 100 μA DVDD = 3 V, ISINK = 100 μA DVDD = 5 V, ISOURCE = 200 μA DVDD = 5 V, ISINK = 1.6 mA (DOUT/RDY)/800 μA (CLK) ±10 10 Offset binary μA max pF typ +1.05 × FS −1.05 × FS 0.8 × FS 2.1 × FS V max V min V min V max 2.7/5.25 2.7/5.25 V min/max V min/max 140 μA max 185 μA max 400 μA max 500 μA max 1 μA max ‫ۆ‬႙ኵ110 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ125 μA (AVDD = 5 V)Lj࿮࣐؋ఇ๕Ljྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ130 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ165 μA (AVDD = 5 V)Lj࣐؋ఇ๕Ljሺᅮ = 1ई2Ljྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ300 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ350 μA (AVDD = 5 V)Ljሺᅮ = 4዁128Ljྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ400 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ450 μA (AVDD = 5 V)Ljሺᅮ = 4዁128Ljాևएጚ‫ۉ‬უ ࿒‫ྺྷݔ܈‬-40ņ዁+105ņăሞ߸ႎ໏୲‫ڟٳ‬19.6 Hzࢅ39.2 Hz‫ڦ‬ཉॲူLjසࡕAIN(+)ईAIN(−)ᆅগฉ‫ۉڦ‬უኵ‫ࡗג‬AVDD – 16 VLjሶINLĂ‫ۉ‬ᇸᅞ዆(PSR)Ăࠌఇ ᅞ዆(CMR)ࢅ‫ز‬ఇ߅ඡᅞ዆(NMR)փ‫ࢇޙ‬ຕ਍๮֩रຍࡀ߭‫ڦ‬ᄲ൱ă૩සLj‫ۉُࡗגړ‬უ้LjINL‫ۆ‬႙ኵই዁஢ଉ‫ڦײ‬18 ppmLjPSR‫ۆ‬႙ኵই዁69 dBăᅺُLj ྺԍኤኄၵ߸ႎ໏୲ူ‫ڦ‬ႠీLjఇె๼෇ᆅগฉ‫ڦ‬ਨ‫ۉܔ‬უՂႷ‫گ‬ᇀAVDD − 1.6 Vă रຍࡀ߭࿄ঢ়ิׂ֪๬Lj‫ڍ‬๴ׂ೗‫؛‬๔݀ք้‫ڦ‬༬Ⴀຕ਍ኧ‫׼‬ă ঢ়ၯጚLjُဃֶᇑ჋ۨ‫ڦ‬Պ‫ײ‬ሺᅮࢅ߸ႎ໏୲໯‫ܔ‬ᆌ‫ڦ‬ሯำ၎‫ړ‬ă ሞඪᅪ࿒‫ူ܈‬৊ႜዘႎၯጚ਩੗ᅜၩ‫أ‬ኄၵဃֶă ஢ଉ‫ײ‬ဃֶ๢ᆩᇀኟĂ޶ଇዖ஢ଉ‫ײ‬Ljժሞ߾‫׍‬ၯጚཉॲူ๢ᆩ(AVDD = 4 VLjሺᅮ = 1LjTA = 25°C)ă FS[3:0]ྺఇ๕स٪ഗዐ‫຺ڦ‬࿋Ljᆩઠ჋ስ๼‫؜‬ጴ໏୲ă ্ᆩघ૤‫ࢅୁۉ‬ೋዃ‫ۉ‬უ݀ิഗ้Ljຕጴ๼෇‫ڪ‬ᇀDVDDईGNDă Rev. B | Page 5 of 32 AD7792/AD7793 ้Ⴞ༬Ⴀ! ‫ݥأ‬ଷᆶຫ௽LjAVDD = 2.7 V዁5.25 VLjDVDD = 2.7 V዁5.25 VLjGND = 0 VLj๼෇இड0 = 0 VLj๼෇இड1 = DVDDă ՗2 ֖ຕ1,2 t3 t4 ‫܁‬ൽ֡ፕ! t1 t2 3 t5 5, 6 t6 t7 ႀ෇֡ፕ t8 t9 t10 t11 2 3 4 5 6 ‫ڇ‬࿋ ns,ፌၭኵ ns,ፌၭኵ ཉॲ/ጀ๥ SCLKߛ‫ۉ‬ೝஞ؋੻‫܈‬ SCLK‫ۉگ‬ೝஞ؋੻‫܈‬ 0 60 80 0 60 80 10 80 0 10 ns,ፌၭኵ ns,ፌ‫ٷ‬ኵ ns,ፌ‫ٷ‬ኵ ns,ፌၭኵ ns,ፌ‫ٷ‬ኵ ns,ፌ‫ٷ‬ኵ ns,ፌၭኵ ns,ፌ‫ٷ‬ኵ ns,ፌၭኵ ns,ፌၭኵ CSူইᄂ‫ڟ‬DOUT/RDYᆶၳ้क़ DVDD = 4.75 V዁5.25 V DVDD = 2.7 V዁3.6 V SCLKᆶၳᄂ‫ڟ‬ຕ਍ᆶၳჽ‫׿‬4 DVDD = 4.75 V዁5.25 V DVDD = 2.7 V዁3.6 V CS࿮ၳᄂࢫ‫ڦ‬ጺ၍๥‫้ݣ‬क़ 0 30 25 0 ns,ፌၭኵ ns,ፌၭኵ ns,ፌၭኵ ns,ፌၭኵ CSူইᄂ‫ڟ‬SCLKᆶၳᄂยዃ้क़4 ຕ਍ᆶၳ‫ڟ‬SCLKᄂยዃ้क़ ຕ਍ᆶၳ‫ڟ‬SCLKᄂԍ‫้׼‬क़ CSฉืᄂ‫ڟ‬SCLKᄂԍ‫้׼‬क़ SCLK࿮ၳᄂ‫ڟ‬CS࿮ၳᄂ SCLK࿮ၳᄂ‫ڟ‬DOUT/RDYߛ‫ۉ‬ೝ ᄣೌሞ‫ْ݀؛‬ք೺क़਩ঢ়ࡗ֪๬Ljᅜඓԍ‫ࢇޙ‬Քጚᄲ൱ă໯ᆶ๼෇႑ࡽ਩ኸۨtR = tF = 5 ns)DVDD‫ڦ‬10%‫ڟ‬90%*Ljժٗ1.6 V‫ۉ‬ೝഐਸ๔ऺ้ă ֖९཮3ࢅ཮4ă ኄၵຕኵ๟֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ‫֪ڦ‬ଉ঳ࡕLjۨᅭྺ๼‫ੵ؜‬ሁVOLईVOH၌ኵ໯Ⴔ‫้ڦ‬क़ă SCLKᆶၳᄂྺSCLK‫ူڦ‬ইᄂă ኄၵຕኵઠᇸᇀ֪ଉ้क़Lj޿้क़ྺ֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ้ຕ਍๼‫߀؜‬Վ0.5 V໯Ⴔ‫้ڦ‬क़ăথူઠLjཚࡗ‫֪ܔ‬ଉ঳ࡕ৊ႜ‫ݒ‬ၠླྀ܏Lj੗ᅜၩ‫ܔأ‬50 pF‫ۉ‬ ඹ؊Ă‫ڦۉݣ‬ᆖၚăኄᅪ࿆ጣLj้Ⴞ༬Ⴀ໯ߴ‫้ڦ؜‬क़๟޿ഗॲኈኟ‫ڦ‬ጺ၍๥‫้ݣ‬क़Ljᅺܸᇑྔևጺ၍޶ሜ‫ۉ‬ඹ࿮࠲ă ሞ‫܁‬ൽADCኮࢫLjRDY‫ۉߛ࣮ݓ‬ೝăሞ‫ْڇ‬ገ࣑ఇ๕ࢅ૶Ⴤገ࣑ఇ๕ူLj‫ړ‬RDYྺߛ‫ۉ‬ೝ้LjසᆶՂᄲLj੗ᅜምْ‫܁‬ൽཞᅃຕ਍Lj‫ڍ‬ᆌඓԍࢫჄ‫܁‬ൽ֡ፕ‫ڦ‬ ݀ิ้क़փీথৎူᅃْ๼‫߸؜‬ႎ้क़ăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjຕጴጴኻీԥ‫܁‬ൽᅃْă ISINK (1.6mA WITH DVDD = 5V, 100μA WITH DVDD = 3V) TO OUTPUT PIN 1.6V 50pF ISOURCE (200μA WITH DVDD = 5V, 100μA WITH DVDD = 3V) ཮ 2. ้Ⴞ༬Ⴀ‫޶ڦ‬ሜ‫ۉ‬ୟ Rev. B | Page 6 of 32 04855-002 1 ሞTMINࢅTMAXཉॲူ‫ڦ‬၌ኵ(Bप) 100 100 AD7792/AD7793 ้Ⴞ཮! CS (I) t6 t1 t5 MSB DOUT/RDY (O) LSB t7 t2 t3 04855-003 SCLK (I) t4 NOTES 1. I = INPUT, O = OUTPUT ཮3. ‫܁‬ൽዜ೺้Ⴞ཮ CS (I) t11 t8 SCLK (I) t9 t10 MSB NOTES 1. I = INPUT, O = OUTPUT ཮4. ႀ෇ዜ೺้Ⴞ཮ Rev. B | Page 7 of 32 LSB 04855-004 DIN (I) AD7792/AD7793 ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ! ‫ݥأ‬ଷᆶຫ௽LjTA = 25°Că ՗3 ֖ຕ! AVDD዁GND DVDD዁GND ఇె๼෇‫ۉ‬უ዁GND एጚ๼෇‫ۉ‬უ዁GND ຕጴ๼෇‫ۉ‬უ዁GND ຕጴ๼‫ۉ؜‬უ዁GND AIN/ຕጴ๼෇‫ୁۉ‬ ߾ፕ࿒‫ྷݔ܈‬ ٪‫ئ‬࿒‫ྷݔ܈‬ ፌߛ঳࿒ TSSOP θJAඤፆ θJCඤፆ ᆅগ࿒‫܈‬Ljࡰথ ! ഘ၎(60௱) ! ࢤྔ(15௱) ‫ۨܮ‬ኵ! −0.3 V ዁ +7 V −0.3 V዁ +7 V −0.3 V ዁ AVDD + 0.3 V −0.3 V ዁ AVDD + 0.3 V −0.3 V ዁ DVDD + 0.3 V −0.3 V ዁ DVDD + 0.3 V 10 mA −40°C ዁ +105°C −65°C ዁ +150°C 150°C ጀᅪLj‫؜ג‬ฉຎਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ੗ీࣷ‫ڞ‬ዂഗॲᆦ৳Ⴀ໦ ࣋ăኄኻ๟‫ۨܮ‬ፌኵLjփᅪ࿆ጣഗॲሞኄၵईኁඪࢆഄ໲ ‫؜ג‬Ԩरຍࡀ߭ກ‫ీࠀڦ‬Ⴀ֡ፕቤব૛Ք௽‫ڦ‬ཉॲူ‫ࠀڦ‬ ీႠ֡ፕă‫׊‬೺ሞਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵཉॲူ߾ፕࣷᆖၚഗॲ ‫ڦ‬੗੍Ⴀă ESDয়ߢ 128°C/W 14°C/W 215°C 220°C Rev. B | Page 8 of 32 ESD(ৢ‫ߌ௺)ۉݣۉ‬ഗॲă ‫ۉټ‬ഗॲࢅ‫ۉ‬ୟӱ੗ీࣷሞுᆶִਥ‫ڦ‬൧઄ူ‫ݣ‬ ‫ۉ‬ă৑࠶Ԩׂ೗ਏᆶጆ૧ईጆᆶԍࢺ‫ۉ‬ୟLj‫ڍ‬ሞᇜ ‫ీߛڟ‬ଉESD้Ljഗॲ੗ీࣷ໦࣋ăᅺُLjᆌ‫֑ړ‬ ൽ๢‫ڦړ‬ESD‫ٯݔݞ‬แLjᅜՆ௨ഗॲႠీူইईࠀ ీෟ฿ă AD7792/AD7793 SCLK 1 16 DIN CLK 2 15 DOUT/RDY CS 3 14 DVDD 13 AVDD 12 GND IOUT1 4 AD7792/ AD7793 TOP VIEW (Not to Scale) AIN1(+) 5 AIN1(–) 6 11 IOUT2 AIN2(+) 7 10 REFIN(–)/AIN3(–) AIN2(–) 8 9 REFIN(+)/AIN3(+) 04855-005 ᆅগದዃࢅࠀీ௮ຎ Figure 5. Pin Configuration ཮5. ᆅগದዃ ՗4. ᆅগࠀీ௮ຎ ᆅগՊࡽ 1 ᆅগఁ‫!׬‬ SCLK ௮ຎ! ‫ز‬ႜ้ዓ๼෇ăᆩᇀᇑADC৊ႜຕ਍‫د‬๼ăSCLKਏᆶแ௢༬‫݀ة‬๕๼෇Ljᅺܸ޿থ੨๢ࢇ࠼߰૗ᆌ ᆩă޿‫ز‬ႜ้ዓ੗ᅜ๟૶Ⴤ๕้ዓLj໯ᆶຕ਍਩ሞ૶Ⴤ‫ڦ‬ஞ؋‫ز‬ዐ‫د‬๼ăईኁLj໲ᄺ੗ᅜ๟‫૶ݥ‬Ⴤ๕ ้ዓLjઠྫADC‫ڦ‬႑တᅜডၭ‫ڦ‬ຕ਍Ԉႚ๕‫د‬๼ă 2 CLK ้ዓ๼෇/้ዓ๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాև้ዓLjईኁ্ᆩాև้ዓă‫ాړ‬և้ዓԥ্ᆩࢫLj੗ ᅜ֑ᆩྔև้ዓൻ‫޿ۯ‬ADCăኄᄣLj‫߲ܠ‬ADC੗ᅜᆯཞᅃ้ዓൻ‫ۯ‬Ljܸٗኴႜཞօገ࣑ă 3 CS ೌ჋๼෇ᆅগăኄ๟ᅃ߲‫ۉگ‬ೝᆶၳஇड๼෇ᆅগLjᆩᇀ჋ስADCăCS੗ᅜᆩઠሞ‫ز‬ႜጺ၍ฉਏᆶ‫ܠ‬ ߲ഗॲ‫ڦ‬ဣཥዐ჋ስADCLjईኁᆩፕኡཞօ႑ࡽLjᇑഗॲཚ႑ăCS੗ᅜᆩᆘ૶၍‫ݛ‬๕ዃྺ‫ۉگ‬ೝLj๑ ‫ڥ‬ADCీᅜ3၍๕ఇ๕߾ፕLjཚࡗSCLKĂDINࢅDOUTᇑഗॲথ੨ă 4 IOUT1 ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాևघ૤‫ୁۉ‬ăᆩࢽ੗ᅜཚࡗՊ‫ײ‬ยዃాևघ૤‫ୁۉ‬ ᇸLjᅜՍॽ‫ୁۉ‬ยዃྺ10 μAĂ210 μAई1 mAă੗ᅜॽIEXC1ईIEXC2ൎ࣑዁ُ๼‫؜‬ă 5 6 7 AIN1(+) ఇె๼෇ᆅগăAIN1(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫ڦ‬ኟ‫܋‬ă AIN1(−) AIN2(+) ఇె๼෇ᆅগăAIN2(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫ڦ‬ኟ‫܋‬ă 8 9 AIN2(−) REFIN(+)/AIN3(+) 10 REFIN(−)/AIN3(−) ఇె๼෇/޶एጚ‫ۉ‬უ๼෇ᆅগăREFIN(-)๟REFIN‫޶ڦ‬एጚ‫ۉ‬უ๼෇ă޿एጚ‫ۉ‬უ๼෇੗࿋ᇀGNDᇑ AVDD−0.1 Vኮक़ăଷྔLj޿ᆅগ࣏੗ᆩፕAIN3(−)Ljनֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/ AIN3(−)‫܋޶ڦ‬ă 11 IOUT2 ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాևघ૤‫ୁۉ‬ᇸăᆩࢽ੗ᅜཚࡗՊ‫ײ‬ยዃాևघ૤‫ۉ‬ ୁᇸLjᅜՍॽ‫ୁۉ‬ยዃྺ10 μAĂ210 μAई1 mAă੗ᅜॽIEXC1ईIEXC2ൎ࣑዁ُ๼‫؜‬ă 12 13 14 GND AVDD DVDD থ‫ں‬एጚ‫ۅ‬ă ‫ۉ‬ᇸ‫ۉ‬უ(2.7 V዁5.25 V)ă ຕጴথ੨‫ۉ‬ᇸᆅগă‫ز‬ႜথ੨ᆅগ‫ڦ‬இड‫ۉ‬ೝᇑ޿‫ۉ‬ᇸᆶ࠲Ljሞ2.7 Vᇑ5.25 Vኮक़ăDVDDᆅগ‫ۉ‬უᇑ AVDDᆅগ‫ۉ‬უ࿮࠲ǗᅺُLjAVDD = 5 VĂDVDD = 3 VLj‫ݒ‬ኮᅨ඗ă ఇె๼෇ᆅগăAIN1(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫܋޶ڦ‬ă ఇె๼෇ᆅগăAIN2(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫܋޶ڦ‬ă ఇె๼෇/ኟएጚ‫ۉ‬უ๼෇ᆅগă੗ᅜሞREFIN(+)ᇑREFIN(−)ኮक़แेᅃ߲ྔևएጚ‫ۉ‬უăREFIN(+)੗࿋ ᇀAVDDࢅGND + 0.1 Vኮक़ăՔ‫׬‬एጚ‫ۉ‬უ)REFIN(+)዁REFIN(−)*ྺ2.5 VLj‫޿ڍ‬ഗॲ੗ᅜ֑ᆩ0.1 V዁AVDD‫ݔ‬ ྷా‫ڦ‬एጚ‫ۉ‬უ߾ፕăଷྔLj޿ᆅগ੗ᆩፕAIN3(+)Ljनֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/AIN3(−)‫ڦ‬ኟ‫܋‬ă Rev. B | Page 9 of 32 AD7792/AD7793 ᆅগՊࡽ ᆅগఁ‫!׬‬ ௮ຎ! 15 DOUT/RDY ‫ز‬ႜຕ਍๼‫؜‬/ຕ਍৽Ⴣ๼‫؜‬ᆅগăDOUT/RDYਏᆶມዘፕᆩă໲੗ᅜᆩፕ‫ز‬ႜຕ਍๼‫؜‬ᆅগLjᅜ‫ݡ‬࿚ ADC‫ڦ‬๼‫؜‬ᅎ࿋स٪ഗă๼‫؜‬ᅎ࿋स٪ഗ੗ᅜࡤᆶઠጲඪᅃೌాຕ਍स٪ഗई੦዆स٪ഗ‫ڦ‬ຕ਍ăُ ྔLjDOUT/RDY੗ᅜᆩፕຕ਍৽Ⴣᆅগă‫ړ‬ᆅগ‫ۉڦ‬ೝྺ‫้گ‬Lj՗๖ገ࣑ᅙྜ‫ׯ‬ăገ࣑ྜ‫ࢫׯ‬Ljසࡕຕ ਍࿄ԥ‫܁‬ൽLj޿ᆅগॽሞူᅃْ߸ႎኮമՎྺߛ‫ۉ‬ೝă DOUT/RDYူইᄂ੗ᅜᆩፕ‫ت‬૙ഗ‫ڦ‬ዐ܏Lj՗๖٪ሞ੗ᆩຕ਍ă ֑ᆩྔև‫ز‬ႜ้ዓ้Lj੗ᅜ૧ᆩDOUT/RDYᆅগ‫܁‬ൽຕ਍ăCSྺ‫ۉگ‬ೝ้Ljຕ਍/੦዆ጴ႑တሞSCLKူ ইᄂԥዃᇀDOUT/RDYᆅগฉLj൐ሞSCLKฉืᄂᆶၳă 16 DIN ‫ز‬ႜຕ਍๼෇ă޿‫ز‬ႜຕ਍๼෇ᆩᇀADC‫ڦ‬๼෇ᅎ࿋स٪ഗă޿ᅎ࿋स٪ഗዐ‫ڦ‬ຕ਍‫د‬๼዁ADCా‫ڦ‬੦ ዆स٪ഗǗཚ႑स٪ഗ‫ڦ‬स٪ഗ჋ስ࿋੗ᅜ๎՚ട‫ڦړ‬स٪ഗă Rev. B | Page 10 of 32 AD7792/AD7793  ๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭! ྔևएጚ‫ۉ‬უᇸ! ՗5ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7792/AD7793 ‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍๟ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ ᅜत֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸܸჾăኄၵຕኵྺ‫ۆ‬႙ኵLj ׂิ‫ڦ‬ཉॲྺֶ‫ݴ‬๼෇‫ۉ‬უྺ0Vă՗6ࢅ՗7‫ݴ‬՚ଚ‫؜‬କ AD7793ࢅAD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲ᅜत๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր ୲(ઔࡽా‫ڦ‬ຕጴ)ăՂႷጀᅪLjᆶၳ‫ݴ‬Ր୲๟૧ᆩ਩‫ߵݛ‬ ሯำऺ໙‫؜ڥ‬Ljܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙ ‫؜ڥ‬ă‫ރރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵ ຕ਍ྺ‫ۆ‬႙ኵLjᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă ՗5. AD7792ࢅAD7793‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 0.64 1.04 1.55 2.3 2.95 4.89 11.76 11.33 ሺᅮ = 2 0.6 0.96 1.45 2.13 2.85 4.74 9.5 9.44 ሺᅮ = 4 0.29 0.38 0.54 0.74 0.92 1.49 4.02 3.07 ሺᅮ = 8 0.22 0.26 0.36 0.5 0.58 1 1.96 1.79 ሺᅮ = 16 0.1 0.13 0.18 0.23 0.29 0.48 0.88 0.99 ሺᅮ = 32 0.065 0.078 0.11 0.17 0.2 0.32 0.45 0.63 ሺᅮ = 64 0.039 0.057 0.087 0.124 0.153 0.265 0.379 0.568 ሺᅮ = 128 0.041 0.055 0.086 0.118 0.144 0.283 0.397 0.593 ሺᅮ = 64 21 (18.5) 20.5 (18) 20 (17.5) 19 (16.5) 19 (16.5) 18 (15.5) 17.5 (15) 17 (14.5) ሺᅮ = 128 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 18 (15.5) 17 (14.5) 16.5 (14) 16 (13.5) ሺᅮ = 64 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 165 (15.5) 16 (15) 16 (14.5) ሺᅮ = 128 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14) 15.5 (13.5) ՗6. AD7793‫ۆڦ‬႙‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 23 (20.5) 22 (19.5) 21.5 (19) 21 (18.5) 20.5 (18) 20 (17.5) 18.5 (16) 18.5 (16) ሺᅮ = 2 22 (19.5) 21.5 (19) 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 18 (15.5) 18 (15.5) ሺᅮ = 4 22 (19.5) 21.5 (19) 21 (18.5) 20.5 (18) 20.5 (18) 19.5 (17) 18 (15.5) 18.5 (16) ሺᅮ = 8 21.5 (19) 21 (18.5) 20.5 (18) 20 (17.5) 20 (17.5) 19 (16.5) 18 (15.5) 18.5 (16) ሺᅮ = 16 21.5 (19) 21 (18.5) 20.5 (18) 20.5 (18) 20 (17.5) 19.5 (17) 18.5 (16) 18 (15.5) ሺᅮ = 32 21 (18.5) 21 (18.5) 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 18 (15.5) ՗7. AD7792‫ۆڦ‬႙‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) ሺᅮ = 2 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15.5) ሺᅮ = 4 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) ሺᅮ = 8 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) Rev. B | Page 11 of 32 ሺᅮ = 16 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) ሺᅮ = 32 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) AD7792/AD7793 ాևएጚ‫ۉ‬უ! ՗8ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7792/AD7793 ‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ᅜ त֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸܸჾăኄၵຕኵྺ‫ۆ‬႙ኵLj ׂิ‫ڦ‬ཉॲྺֶ‫ݴ‬๼෇‫ۉ‬უྺ0Vă՗9ࢅ՗10‫ݴ‬՚ଚ‫؜‬କ AD7793ࢅAD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲ᅜत๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր ୲(ઔࡽా‫ڦ‬ຕጴ)ăՂႷጀᅪLjᆶၳ‫ݴ‬Ր୲ߵ਍਩‫ߵݛ‬ሯ ำऺ໙‫؜ڥ‬Ljܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙‫ڥ‬ ‫؜‬ă‫ރރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵຕ ਍ྺ‫ۆ‬႙ኵLjᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă ՗8. AD7792ࢅAD7793‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 0.81 1.18 1.96 2.99 3.6 5.83 11.22 12.46 ሺᅮ = 2 0.67 1.11 1.72 2.48 3.25 5.01 8.64 10.58 ሺᅮ = 4 0.32 0.41 0.55 0.83 1.03 1.69 2.69 4.58 ሺᅮ = 8 0.2 0.25 0.36 0.48 0.65 0.96 1.9 2 ሺᅮ = 16 0.13 0.16 0.25 0.33 0.46 0.67 1.04 1.27 ሺᅮ = 32 0.065 0.078 0.11 0.17 0.2 0.32 0.45 0.63 ሺᅮ = 64 0.04 0.058 0.088 0.13 0.15 0.25 0.35 0.50 ሺᅮ = 128 0.039 0.059 0.088 0.12 0.15 0.26 0.34 0.49 ሺᅮ = 64 20 (17.5) 19 (16.5) 18.5 (16) 18 (15.5) 18 (15.5) 17 (14.5) 16.5 (14) 16 (13.5) ሺᅮ = 128 19 (16.5) 18 (15.5) 17.5 (15) 17 (14.5) 17 (14.5) 16 (13.5) 15.5 (13) 15 (12.5) ሺᅮ = 64 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15.5) 16 (14.5) 16 (14) 15.5 (13.5) ሺᅮ = 128 16 (16) 16 (15.5) 16 (15) 16 (14.5) 16 (14.5) 15.5 (13.5) 15 (13) 14.5 (12.5) ՗9. AD7793‫ڦ‬ᆶၳ‫ݴ‬Ր୲DŽ࿋Džᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 21.5 (19) 21 (18.5) 20 (17.5) 19.5 (17) 19.5 (17) 18.5 (16) 17.5 (15) 17.5 (15) ሺᅮ = 2 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 18 (15.5) 17 (14.5) 17 (14.5) ሺᅮ = 4 21 (18.5) 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 17.5 (15) 17 (14.5) ሺᅮ = 8 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 19 (16.5) 18 (15.5) 17 (14.5) 17 (14.5) ሺᅮ = 16 20 (17.5) 20 (17.5) 19 (16.5) 19 (16.5) 18.5 (16) 17.5 (15) 17 (14.5) 17 (14.5) ሺᅮ = 32 20 (17.5) 20 (17.5) 19.5 (17) 18.5 (16) 18.5 (16) 18 (15.5) 17.5 (15) 17 (14.5) ՗10. AD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲DŽ࿋Džᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 ሺᅮ = 1 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (15) ሺᅮ = 2 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14.5) ሺᅮ = 4 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (14.5) ሺᅮ = 8 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14.5) Rev. B | Page 12 of 32 ሺᅮ = 16 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (14.5) 16 (14.5) ሺᅮ = 32 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15) 16 (14.5) AD7792/AD7793 ‫ۆ‬႙߾ፕ༬Ⴀ! 8388800 8388750 20 CODE READ OCCURRENCE (%) 8388700 8388650 8388600 10 8388450 04855-006 8388500 0 200 400 600 800 0 1000 04855-009 8388550 –1.75 –1.05 –0.70 –0.35 READING NUMBER 16 90 14 80 0.70 1.05 1.40 1.75 70 POWER-UP TIME (ms) 12 10 8 6 4 60 50 40 30 20 04855-007 2 0 8388482 8388520 8388560 8388600 8388640 8388680 04855-010 OCCURRENCE 0.35 ཮9. ࣍ৣ࿒‫ူ܈‬घ૤‫ୁۉ‬೅ದ(1 mA) ཮6. AD7793‫ۆڦ‬႙ሯำ཮ (ాևएጚ‫ۉ‬უLjሺᅮ = 64Lj߸ႎ໏୲ = 16.7 Hz) 10 0 8388720 8388750 CODE 0 200 400 600 800 1000 LOAD CAPACITANCE (nF) ཮7. AD7793‫ڦ‬ሯำ‫ݴ‬ք኱‫཮ݛ‬ )ాևएጚ‫ۉ‬უLjሺᅮ = 64Lj߸ႎ໏୲ = 16.7 Hz* ཮10. ೋዃ‫ۉ‬უ݀ิഗฉ‫้ۉ‬क़ᇑ޶ሜ‫ۉ‬ඹ‫࠲ڦ‬ဣ 3.0 VDD = 5V UPDATE RATE = 16.6Hz TA = 25°C 2.5 20 RMS NOISE (μV) 2.0 1.5 10 1.0 0 –2.0 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6 2.0 MATCHING (%) 0 04855-011 0.5 04855-008 OCCURRENCE (%) 0 MATCHING (%) 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 REFERENCE VOLTAGE (V) ཮8. ࣍ৣ࿒‫ူ܈‬घ૤‫ୁۉ‬೅ದ(210 μA) ཮11 ਩‫ߵݛ‬ሯำᇑएጚ‫ۉ‬უ‫࠲ڦ‬ဣ(ሺᅮ = 1) Rev. B | Page 13 of 32 5.0 AD7792/AD7793 ೌాस٪ഗ! ADCᆯႹ‫ాೌܠ‬स٪ഗ৊ႜ੦዆ࢅದዃLjူ௬‫ڦ‬ቤবॽ‫ܔ‬ ኄၵस٪ഗ৊ႜၘဦ‫ڦ‬ຫ௽ăሞူ௬‫ڦ‬௮ຎዐLjස࿮༬๺ ຫ௽Lj“ዃ1”՗๖இड1ጒༀLj“ൣ0”՗๖இड0ጒༀă ཚ႑स٪ഗ RS2, RS1, RS0 = 0, 0, 0 ཚ႑स٪ഗ๟ᅃ߲8࿋ኻႀस٪ഗăᇑADCഗॲኮक़‫ڦ‬໯ ᆶཚ႑਩ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ăႀ෇ཚ႑स ٪ഗ‫ڦ‬ຕ਍ਦۨକူᅃ߲֡ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ፕLjᅜत ُ֡ፕ‫֡ڦ‬ፕ‫ܔ‬ၡ๟నᅃ߲स٪ഗă‫ܔ‬ᇀ‫܁‬/ႀ֡ፕLj‫ܔړ‬ CR7 WEN(0) CR6 R/W(0) CR5 RS2(0) CR4 RS1(0) ჋ۨस٪ഗ‫܁ڦ‬/ႀ֡ፕྜ‫ࢫׯ‬Ljথ੨‫ܔڟ࣮ݓ‬ཚ႑स٪ഗ ኴႜႀ֡ፕ‫ڦ‬ጒༀăኄ๟থ੨‫ڦ‬ఐණጒༀLjሞฉ‫ۉ‬ईް࿋ ࢫLjADCॽ‫ت‬ᇀُఐණጒༀLj‫ܔځڪ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ ፕă‫ړ‬থ੨้Ⴞ۪฿ኮࢫLjኴႜᅃ߲቞ᆩ዁ณ32߲‫ز‬ႜ้ ዓዜ೺‫ڦ‬ႀ֡ፕLjժ๑DIN‫ت‬ᇀߛ‫ۉ‬ೝጒༀLjॽ੗ᅜް࿋ ኝ߲ഗॲLjܸٗඟADC‫ُ࣮ݓ‬ఐණጒༀă՗11ଚ‫؜‬କཚ႑ स٪ഗ࿋ࠀీ௮ຎăCR0዁CR7՗๖࿋‫ڦ‬࿋ዃLjCRຫ௽ኄ ၵ࿋ຌᇀཚ႑स٪ഗăCR7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă CR3 RS0(0) CR2 CREAD(0) CR1 0(0) CR0 0(0) ՗11. ཚ႑स٪ഗ࿋ࠀీ௮ຎ ࿋࿋ዃ CR7 ࿋ఁ‫׬‬ WEN ௮ຎ ႀ෇๑ీ࿋ăॽ0ႀ෇ُ࿋ࢫLj‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕ֍ᆶၳăසࡕ‫ڼ‬ᅃ࿋ႀ෇1Ljሶഗॲփࣷॽໜࢫ‫ڦ‬ ࿋ሜ෇स٪ഗLj໲ॽཕାሞُ࿋‫ڦ‬࿋ዃLj኱‫ُڟ‬࿋ႀ෇0ăᅃ‫ॽڋ‬0ႀ෇WER࿋LjഗॲՍࣷॽࢫჄ7࿋ຕ਍ ሜ෇ཚ႑स٪ഗă CR6 R/W CR5 to CR3 CR2 RS2 to RS0 CREAD සࡕُ࿋ྺ0Ljሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸۨस٪ഗኴႜႀ֡ፕăසࡕُ࿋ྺ1Ljሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸ ۨस٪ഗኴႜ‫֡܁‬ፕă स٪ഗ‫ں‬኷࿋ăኄၵ‫ں‬኷࿋ਦۨሞ‫ز‬ႜথ੨ཚ႑೺क़჋ስADC‫ڦ‬నၵस٪ഗă֖९՗12ă CR1 to CR0 0 ૶Ⴤ‫܁‬ൽຕ਍स٪ഗă‫޿ړ‬࿋ԥዃྺ1(൐ຕጴस٪ഗᅙ჋)Lj‫ز‬ႜথ੨੗ᅜ૶Ⴤٗຕ਍स٪ഗా‫܁‬ൽຕ ਍ă૩සLj‫ړ‬RDYᆅগՎྺ‫ۉگ‬ೝᅜ༵๖ገ࣑ྜ‫ࢫׯ‬LjሞSCLKஞ؋แेᇀADC้Ljຕ਍स٪ഗ‫ాڦ‬ඹጲ‫ۯ‬ ዃᇀDOUTᆅগฉă‫ܔ‬ᇀࢫჄຕ਍‫܁‬ൽLjփՂ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕăᄲ๑ీ૶Ⴤ‫܁‬ൽఇ๕LjՂႷॽኸ ସ01011100ႀ෇ཚ႑स٪ഗăැᄲཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕LjՂႷሞRDYᆅগྺ‫ۉگ‬ೝ้ॽኸସ01011000ႀ෇ ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjADCࣷ॔੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬LjᅜՍీথ๭ኸସཽܸٗ‫૶؜‬Ⴤ‫܁‬ൽఇ ๕ăُྔLjසࡕDINฉ૶Ⴤ‫؜‬၄32߲1LjADCॽް࿋ăᅺُLjሞ૶Ⴤ‫܁‬ൽఇ๕ူLjሞᆶኸସႀ෇ഗॲമLj DINᆌԍ‫ۉگ׼‬ೝă ՂႷॽኄၵ࿋Պ‫ྺײ‬இड1֍ీኟ‫߾׉‬ፕă! ՗12. स٪ഗ჋ስ RS2 0 0 0 0 0 1 1 1 1 RS1 0 0 0 1 1 0 0 1 1 RS0 0 0 1 0 1 0 1 0 1 स٪ഗ स٪ഗ‫ٷ‬ၭ!! ႀ֡ፕ೺क़ྺཚ႑स٪ഗ ‫֡܁‬ፕ೺क़ྺጒༀस٪ഗ ఇ๕स٪ഗ ದዃस٪ഗ ຕ਍स٪ഗ IDस٪ഗ IOस٪ഗ ฿ۙस٪ഗ ஢ଉ‫ײ‬स٪ഗ ႀ֡ፕ೺क़ྺཚ႑स٪ഗ ‫֡܁‬ፕ೺क़ྺጒༀस٪ഗ ఇ๕स٪ഗ ದዃस٪ഗ ຕ਍स٪ഗ IDस٪ഗ IOस٪ഗ ฿ۙस٪ഗ ஢ଉ‫ײ‬स٪ഗ Rev. B | Page 14 of 32 AD7792/AD7793 ጒༀस٪ഗ RS2, RS1, RS0 = 0, 0, 0Ǘฉ‫ۉ‬/ް࿋ = 0x80 (AD7792)/0x88 (AD7793) ጒༀस٪ഗ๟ᅃ߲8࿋ኻ‫܁‬स٪ഗăᄲ‫ݡ‬࿚ADCጒༀस٪ഗLjᆩࢽՂႷ‫ܔ‬ཚ႑स٪ഗ৊ႜႀ֡ፕLj჋ስူᅃ߲֡ፕྺ‫֡܁‬ፕLj ժॽ0ሜ෇࿋RS2Ă࿋RS1ࢅ࿋RS0Lj՗13ଚ‫؜‬କጒༀस٪ഗ࿋ࠀీ௮ຎăSR0዁SR7՗๖࿋‫ڦ‬࿋ዃLjSRຫ௽ኄၵ࿋ຌᇀጒༀस٪ ഗăSR7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă SR7 RDY(1) SR6 ERR(0) SR5 0(0) SR4 0(0) SR3 0/1 SR2 CH2(0) SR1 CH1(0) SR0 CH0(0) ՗13. ጒༀस٪ഗ࿋ࠀీ௮ຎ ࿋ఁ‫׬‬ SR7 ࿋ఁ‫׬‬ RDY SR6 ERR SR5 ዁ SR4 SR3 SR2 ዁ SR0 0 0/1 CH2 ዁ CH0 ௮ຎ ADC৽Ⴣ࿋ă‫ړ‬ຕ਍ႀ෇ADCຕ਍स٪ഗࢫLj޿࿋ൣ0ă‫܁‬ൽADCຕ਍स٪ഗኮࢫLjईኁሞᆩႎገ࣑঳ ࡕ߸ႎຕ਍स٪ഗኮമ‫ڦ‬ᅃ܎้क़ాLjRDY࿋ጲ‫ۯ‬ዃ1Ljᅜߢኪᆩࢽփᆌ‫܁‬ൽገ࣑ຕ਍ă‫ړ‬ഗॲሞู‫ۉ‬ ఇ๕ူ้Lj޿࿋ᄺྺ1ăDOUT/RDYᆅগᄺࣷኸ๖ገ࣑ࢆ้঳ຐă޿ᆅগ੗ᅜ‫༺پ‬ጒༀस٪ഗઠ॔๫ ADCᆶ࿮ገ࣑ຕ਍ă ADC‫ٱ‬ဃ࿋ăُ࿋ᇑ ࿋ཞ้ႀ෇ă޿࿋ྺ1ຫ௽ႀ෇ADCຕ਍स٪ഗ‫ڦ‬঳ࡕᶏ࿋ྺඇ0ईඇ1ă‫ڞ‬ዂ‫ٱ؜‬ ‫ڦ‬ᇱᅺྺ‫ג‬ଉ‫ࢅײ‬വଉ‫ײ‬ă ഔ‫ۯ‬ገ࣑‫ڦ‬ႀ֡ፕ੗ॽ޿࿋ൣ0ă ኄၵ࿋ጲ‫ۯ‬ൣ0ă ‫ܔ‬ᇀAD7792Ljُ࿋ጲ‫ۯ‬ൣ0Ǘ‫ܔ‬ᇀAD7793Ljُ࿋ጲ‫ۯ‬ዃ1ă ኄၵ࿋՗๖ADCኟሞ‫ܔ‬నᅃཚ‫ڢ‬ኴႜገ࣑֡ፕă ఇ๕स٪ഗ RS2, RS1, RS0 = 0, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x000A ఇ๕स٪ഗྺᅃ16࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩᇀ჋ስሏႜఇ๕Ă߸ႎ໏୲ࢅ้ዓᇸă՗14ଚ‫؜‬କఇ๕स٪ ഗ࿋ࠀీ௮ຎăMR0዁MR15՗๖࿋‫ڦ‬࿋ዃLjMRຫ௽ኄၵ࿋ຌᇀఇ๕स٪ഗăMR15՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖ ޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀăኻᄲ‫ܔ‬ยዃस٪ഗኴႜႀ֡ፕLj৽ࣷް࿋ۙ዆ഗࢅ୳հഗLjժॽ ࿋ዃ1ă MR15 MD2(0) MR7 CLK1(0) MR14 MD1(0) MR6 CLK0(0) MR13 MD0(0) MR5 0(0) MR12 0(0) MR4 0(0) MR11 0(0) MR3 FS3(1) MR10 0(0) MR2 FS2(0) MR9 0(0) MR1 FS1(1) MR8 0(0) MR0 FS0(0) ՗14. ఇ๕स٪ഗ࿋ࠀీ௮ຎ ࿋࿋ዃ MR15 ዁ MR13 MR12 ዁ MR8 MR7 ዁ MR6 ࿋ఁ‫׬‬ MD2 ዁ MD0 0 CLK1 ዁ CLK0 ௮ຎ ఇ๕჋ስ࿋ăኄၵ࿋჋ስAD7792/AD7793‫߾ڦ‬ፕఇ๕DŽ֖९՗15Džă ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ኄၵ࿋ᆩઠ჋ስAD7792/AD7793‫้ڦ‬ዓᇸă੗ᅜ๑ᆩೌా64 kHz้ዓईྔև้ዓă঺ዺྔև้ዓํ၄ ޮ ႀ Lj ੗ ԍ ኤ ‫ ߲ ܠ‬AD7792/AD7793ഗ ॲ ኮ क़ ‫ ڦ‬ཞ օ ă ُ ྔ Lj ‫ ֑ ړ‬ᆩ ৛ ඓ ‫ ྔ ڦ‬և ้ ዓ ൻ ‫ۯ‬ AD7792/AD7793้Lj੗ᅜ߀฀50 Hz/60 Hzᅞ዆Ⴀీă CLK1 0 0 1 MR5 ዁ MR4 MR3 ዁ MR0 0 FS3 ዁ FS0 CLK0 0 1 0 ADC Clock Source 64 kHzాև้ዓăCLKᆅগփ༵ࠃాև้ዓă 64 kHzాև้ዓăCLKᆅগ༵ࠃُాև้ዓă 64 kHzྔև้ዓăྔև้ዓ੗ᅜ߀฀50 Hz/60 Hzᅞ዆Ⴀీă֖९ྔև้ዓ‫߭ࡀڦ‬ă ໯჋ྔև้ዓăྔև้ዓሞAD7792/AD7793ాԥ2‫ݴ‬ೕă 1 1 ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ୳հഗ߸ႎ໏୲჋ስ࿋(֖९՗16)ă Rev. B | Page 15 of 32 AD7792/AD7793 ՗15. ߾ፕఇ๕ MD2 0 MD1 0 MD0 0 ఇ๕ ૶Ⴤገ࣑ఇ๕)ఐණ*ă ሞ૶Ⴤገ࣑ఇ๕ူLjADC૶Ⴤኴႜገ࣑֡ፕժॽ঳ࡕዃᇀຕ਍स٪ഗዐă‫ړ‬ገ࣑ྜ‫ࢫׯ‬LjRDYՎྺ‫ۉگ‬ೝăॽ ഗॲዃᇀ૶Ⴤ‫܁‬ൽఇ๕ူኮࢫLjᆩࢽ੗ᅜ‫܁‬ൽኄၵገ࣑঳ࡕǗ‫ړ‬แेSCLKஞ؋้Ljገ࣑঳ࡕጲ‫ۯ‬ዃᇀDOUT၍ ୟฉăଷᅃ‫ݛ‬௬Ljᆩࢽ੗ᅜཚࡗ‫ܔ‬ཚ႑स٪ഗ৊ႜႀ֡ፕLjኸ๖ADC๼‫؜‬ገ࣑঳ࡕăฉ‫ࢫۉ‬Ljසཚ‫ิׂڢ‬Վࣅ ई‫ܔ‬ఇ๕स٪ഗĂದዃस٪ഗईIOस٪ഗ৊ႜᅃْႀ֡ፕࢫLj‫ڼ‬ᅃْገ࣑֡ፕॽሞ2/fADCዜ೺ࢫ৊ႜăሞfADC ೕ୲ူLj੗ᅜྜ‫૶ׯ‬Ⴤገ࣑ă 0 0 1 ‫ْڇ‬ገ࣑ఇ๕ă ჋ስ‫ْڇ‬ገ࣑ఇ๕ኮࢫLjADCฉ‫ۉ‬ժኴႜ‫ْڇ‬ገ࣑ăና‫ږ‬ഗฉ‫ॺࢅۉ‬૬Ⴔᄲ1 msă඗ࢫLjADCኴႜገ࣑֡ፕLj ገ࣑֡ፕႴᄲࢾ‫้ڦݯ‬क़ྺ2/fADCăገ࣑঳ࡕԥԍ٪ሞຕ਍स٪ഗዐLjRDYՎྺ‫ۉگ‬ೝLj඗ࢫADC‫ۉู࣮ݓ‬ఇ ๕ăሞຕ਍ԥ‫܁‬ൽईኴႜႎᅃْገ࣑ኮമLj‫ړ‬മ‫ڦ‬ገ࣑঳ࡕॽᅃ኱ԥԍ٪ሞຕ਍स٪ഗዐLjժ൐ ԍ‫׼‬ሞ‫ۉگ‬ ೝጒༀă 0 1 0 0 1 1 1 0 0 ੣ှఇ๕ă ሞ੣ှఇ๕ူLjADC୳հഗࢅۙ዆ഗԍ‫׼‬ሞް࿋ጒༀLj‫ڍ‬ධ඗༵ࠃۙ዆ഗ้ዓă ู‫ۉ‬ఇ๕ă ሞู‫ۉ‬ఇ๕ူLjAD7792/AD7793‫ڦ‬໯ᆶ‫ۉ‬ୟDŽԈઔ‫ୁۉ‬ᇸĂභ܏‫ୁۉ‬Ăೋዃ‫ۉ‬უ݀ิഗࢅCLKOUTDž਩‫ت‬ᇀ࠲ Կጒༀă ాևଭ‫ۉ‬ೝၯጚă ాև‫܌‬ୟጲ‫૶ۯ‬থ‫ڟ‬๑ీ‫ڦ‬ཚ‫ڢ‬ăၯጚ֡ፕႴᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕԍ٪ሞ໯჋ཚ‫ڢ‬ ‫ڦ‬฿ۙस٪ഗዐă 1 0 1 ాև஢ଉ‫ײ‬ၯጚă ‫ܔ‬ᇀ޿ၯጚLj஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫૶ۯ‬থ‫ڟ‬჋ۨ‫ڦ‬ఇె๼෇ă ‫ړ‬ሺᅮྺ1้Ljྜ‫ׯ‬ၯጚႴᄲ2߲ገ࣑ዜ೺ă‫ܔ‬ᇀ߸ߛሺᅮLjኴႜ஢ଉ‫ײ‬ၯጚႴᄲ຺߲ገ࣑ዜ೺ă ‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣ ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă ‫ړ‬ሺᅮྺ128้LjփሎႹኴႜాև஢ଉ‫ײ‬ၯጚLj‫ڍ‬ሎႹኴႜဣཥ஢ଉ‫ײ‬ၯጚă ௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚLjᅜՍॽ஢ଉ‫ײ‬ဃֶই዁ፌၭă 1 1 0 ဣཥଭ‫ۉ‬ೝၯጚă ᆩࢽᆌॽဣཥଭ‫ۉ‬ೝ๼෇૶থ‫ڟ‬ᆯCH2࿋዁CH0࿋‫ڦ‬ኵ໯ਦۨ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগăᅃ߲ဣཥ฿ۙၯጚႴᄲࢾ‫ݯ‬ଇ ߲ገ࣑ዜ೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ׯ‬ ࢫLjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬฿ۙस٪ഗዐă 1 1 1 ဣཥ஢ଉ‫ײ‬ၯጚă ᆩࢽᆌॽဣཥ஢ଉ‫ײ‬๼෇૶থ‫ڟ‬ᆯCH2࿋዁CH0࿋‫ڦ‬ኵ໯ਦۨ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগăၯጚ֡ፕႴᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ ೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă ௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚă ՗16. ੗ᆩ߸ႎ໏୲ FS3 0 0 0 0 0 0 0 0 1 FS2 0 0 0 0 1 1 1 1 0 FS1 0 0 1 1 0 0 1 1 0 FS0 0 1 0 1 0 1 0 1 0 fADC (Hz) x 470 242 123 62 50 39 33.2 19.6 tSETTLE (ms) x 4 8 16 32 40 48 60 101 50 Hz/60 Hzᅞ዆(ాև้ዓ) 90 dB)ৈ60 Hz* Rev. B | Page 16 of 32 AD7792/AD7793 FS3 1 1 1 1 1 1 1 FS2 0 0 0 1 1 1 1 FS1 0 1 1 0 0 1 1 FS0 1 0 1 0 1 0 1 fADC (Hz) 16.7 16.7 12.5 10 8.33 6.25 4.17 tSETTLE (ms) 120 120 160 200 240 320 480 50 Hz/60 Hzᅞ዆DŽాև้ዓDž 80 dB)ৈ50 HzDž 65 dB )50 HzĂ60 Hz* 66 dB )50 HzĂ60 Hz* 69 dB )50 HzĂ60 Hz* 70 dB )50 HzĂ60 Hz* 72 dB )50 HzĂ60 Hz* 74 dB )50 HzĂ60 Hz* ದዃस٪ഗ RS2, RS1, RS0 = 0, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x0710 ದዃस٪ഗ๟ᅃ߲16࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩઠದዃADC‫ڇڦ‬टႠईມटႠఇ๕Ă๑ీई্ᆩ࣐؋ഗĂ ๑ీई্ᆩභ܏‫ୁۉ‬Ă჋ስሺᅮᅜत჋ስఇె๼෇ཚ‫ڢ‬ă՗17ଚ‫؜‬କದዃस٪ഗ࿋ࠀీ௮ຎăCON0዁CON15՗๖࿋‫ڦ‬࿋ዃLj CONຫ௽ኄၵ࿋ຌᇀದዃस٪ഗăCON15՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă CON15 VBIAS1(0) CON14 VBIAS0(0) CON13 BO(0) CON12 U/B(0) CON11 BOOST(0) CON10 G2(1) CON9 G1(1) CON8 G0(1) CON7 REFSEL(0) CON6 0(0) CON5 0(0) CON4 BUF(1) CON3 0(0) CON2 CH2(0) CON1 CH1(0) CON0 CH0(0) ՗17. ದዃस٪ഗ࿋ࠀీ௮ຎ ࿋࿋ዃ CON15 ዁ CON14 ࿋ఁ‫׬‬ VBIAS1 ዁ VBIAS0 ௮ຎ ೋዃ‫ۉ‬უ݀ิഗ๑ీăఇె๼෇‫ڦ܋޶ڦ‬ፌ‫ٷ‬ೋዃ‫ۉ‬უ੗‫ٳ‬AVDD/2ăኄၵ࿋ᆌᇑืუ࿋ᅃഐ๑ᆩă VBIAS1 0 0 1 VBIAS0 0 1 0 ೋዃ‫ۉ‬უ ೋዃ‫ۉ‬უ݀ิഗ্ᆩ ೋዃ‫ۉ‬უ૶থ዁AIN1(−) ೋዃ‫ۉ‬უ૶থ዁AIN2(−) ԍା 1 1 භ܏‫ୁۉ‬๑ీ࿋ăᆩࢽॽ޿࿋ዃ1Lj੗๑ీ႑ࡽୟ০ዐ‫ڦ‬100 nA‫ୁۉ‬ᇸăBO = 0ॽ্ᆩභ܏‫ୁۉ‬ăৈ‫࣐ړ‬ ؋ഗईᅏ՗‫ٷݣ‬ഗ‫ت‬ᇀᆶၳጒༀ้Lj֍ీ๑ీභ܏‫ୁۉ‬ă CON13 BO CON12 U/B ມटႠ/‫ڇ‬टႠ࿋ăᆩࢽॽ޿࿋ዃ1Ljॽ๑ీ‫ڇ‬टႠՊஓLjनଭֶ‫ݴ‬๼෇ׂิ0x000000๼‫؜‬Lj஢ଉ‫ݴֶײ‬ ๼෇ׂิ0xFFFFFF๼‫؜‬ăᆩࢽൣ0ॽ๑ీມटႠՊஓă޶஢ଉ‫ݴֶײ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0x000000Ljଭ ֶ‫ݴ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0x800000Ljኟ஢ଉ‫ݴֶײ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0xFFFFFFă CON11 BOOST CON10 ዁ CON8 G2 ዁ G0 ُ࿋ᆌᇑVBIAS1࿋ࢅVBIAS0࿋ᅃཞ๑ᆩăዃ1้Ljೋዃ‫ۉ‬უ݀ิഗ‫ߛ༵ࡼࠀڦ‬Ljฉ‫้ۉ‬क़໫‫܌‬ă ሺᅮ჋ስ࿋ă ᆯᆩࢽႀ෇Ljᅜ჋ስူଚADC๼෇‫ྷݔ‬ኮᅃǖ G2 0 0 0 0 1 1 1 1 G1 0 0 1 1 0 0 1 1 G0 0 1 0 1 0 1 0 1 Gain 1 (࿄๑ᆩᅏ՗‫ٷݣ‬ഗ) 2 (࿄๑ᆩᅏ՗‫ٷݣ‬ഗ) 4 8 16 32 64 128 Rev. B | Page 17 of 32 ADC๼෇‫ྷݔ‬DŽ2.5 Vएጚ‫ۉ‬უDž 2.5 V 1.25 V 625 mV 312.5 mV 156.2 mV 78.125 mV 39.06 mV 19.53 mV AD7792/AD7793 ࿋࿋ዃ! CON7 ࿋࿋ዃ! REFSEL ௮ຎ एጚ‫ۉ‬უ჋ስ࿋ăኄၵ࿋ᆩઠ჋ስADC‫ڦ‬एጚ‫ۉ‬უᇸă REFSEL एጚ‫ۉ‬უᇸ! 0 REFIN(+)ࢅREFIN(–)ኮक़‫ྔڦ‬ևएጚ‫ۉ‬უă ాևएጚ‫ۉ‬უᇸă 1 ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă CON6 to CON5 CON4 0 ࣐؋ഗ! ದዃADCྺ࣐؋ई࿮࣐؋߾ፕఇ๕ăൣ0้LjADCᅜ࿮࣐؋ఇ๕߾ፕLj੗ই‫گ‬ഗॲ‫ࡼࠀڦ‬ăዃ1้LjADC ᅜ࣐؋ఇ๕߾ፕLjᆩࢽ੗ᅜॽᇸፆੇዃᇀമ‫܋‬Ljܸփࣷߴဣཥ‫ټ‬ઠሺᅮဃֶă‫ړ‬ሺᅮྺ1ई2้Lj੗ᅜ্ ᆩ࣐؋ഗă‫֑ړ‬ᆩ߸‫ڦٷ‬ሺᅮኵ้Lj࣐؋ഗጲ‫ۯ‬๑ీă ࣐؋ഗ্ᆩ้Ljఇె๼෇ᆅগฉ‫ۉڦ‬უ੗ᅜྺGNDᅜူ30 mV዁AVDDᅜฉ30 mVă࣐؋ഗ๑ీ้Lj໲Ⴔ ᄲᅃၵᇧଉǗᅺُLjඪࢆ๼෇ᆅগฉ‫ۉڦ‬უՂႷሞ‫ۉ‬ᇸࡆ‫ڦ‬100 mV‫ాྷݔ‬ă CON3 CON2 to CON0 0 CH2 ዁ CH0 ՂႷॽُ࿋Պ‫ྺײ‬இड1֍ీኟ‫߾׉‬ፕă! ཚ‫ڢ‬჋ስ࿋ăᆯᆩࢽႀ෇Ljᅜ჋ስBED‫ڦ‬ᆶၳఇె๼෇ཚ‫ڢ‬ǖ! CH2 0 0 0 0 1 1 1 1 CH1 0 0 1 1 0 0 1 1 CH0 0 1 0 1 0 1 0 1 ཚ‫ڢ‬ AIN1(+) – AIN1(–) AIN2(+) – AIN2(–) AIN3(+) – AIN3(–) AIN1(–) – AIN1(–) ԍା ԍା ࿒‫ߌد܈‬ഗ AVDD॔੦ഗ ၯጚ‫!ܔ‬ 0 1 2 0 ጲ‫ۯ‬჋ስሺᅮ = 1Lj൐֑ᆩాևएጚ‫ۉ‬უ ጲ‫ۯ‬჋ስሺᅮ = 1/6Lj൐֑ᆩ1.17 V एጚ‫ۉ‬უ ຕ਍स٪ഗ RS2, RS1, RS0 = 0, 1, 1Ǘฉ‫ۉ‬/ް࿋ =0x0000(00) ُຕ਍स٪ഗ٪‫ئ‬ADC‫ڦ‬ገ࣑঳ࡕă໲๟ᅃ߲ኻ‫܁‬स٪ഗăྜ‫ُܔׯ‬स٪ഗ‫֡܁ڦ‬ፕࢫLj RDY࿋/ᆅগዃ1ă IDस٪ഗ RS2, RS1, RS0 = 1, 0, 0Ǘฉ‫ۉ‬/ް࿋ = 0xXA (AD7792)/0xXB (AD7793) IDस٪ഗ٪‫ئ‬AD7792/AD7793‫๎ڦ‬՚ࡽă໲๟ᅃ߲ኻ‫܁‬स٪ഗă IOस٪ഗ RS2, RS1, RS0 = 1, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x00 IOस٪ഗ๟ᅃ߲8࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩᇀ๑ీࢅ჋ስघ૤‫ୁۉ‬ኵă՗18ଚ‫؜‬କIOस٪ഗ࿋ࠀీ௮ຎă IO0዁IO7՗๖࿋‫ڦ‬࿋ዃLjIOຫ௽ኄၵ࿋ຌᇀIOस٪ഗăIO7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒ ༀă IO7 0(0) IO6 0(0) IO5 0(0) IO4 0(0) IO3 IEXCDIR1(0) IO2 IEXCDIR0(0) Rev. B | Page 18 of 32 IO1 IEXCEN1(0) IO0 IEXCEN0(0) AD7792/AD7793 ՗18. IOस٪ഗ࿋ࠀీ௮ຎ ࿋࿋ዃ IO7 ዁ IO4 IO3 ዁ IO2 IO1 ዁ IO0 ࿋ఁ‫׬‬ 0 IEXCDIR1 ዁ IEXCDIR0 IEXCEN1 ዁ IEXCEN0 ௮ຎ ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ‫ୁۉ‬ᇸ‫ݛ‬ၠ჋ስ࿋ă ‫ୁۉ‬ᇸ‫ݛ‬ၠ IEXCDIR1 0 IEXCDIR0 0 ‫ୁۉ‬ᇸIEXC1૶থ዁ᆅগIOUT1Lj‫ୁۉ‬ᇸIEXC2૶থ዁ᆅগIOUT2ă 0 1 ‫ୁۉ‬ᇸIEXC1૶থ዁ᆅগIOUT2Lj‫ୁۉ‬ᇸIEXC2૶থ዁ᆅগIOUT1ă 1 0 1 1 ଇ߲‫ୁۉ‬ᇸ਩૶থ዁ᆅগIOUT1ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้Lj ֍ሎႹኄᄣยዃă ଇ߲‫ୁۉ‬ᇸ਩૶থ዁ᆅগIOUT2ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้Lj ֍ሎႹኄᄣยዃă ኄၵ࿋੗ᆩᇀ๑ీࢅ্ᆩघ૤‫ୁۉ‬ᇸĂ჋ስघ૤‫ୁۉ‬ኵă IEXCEN1 0 0 1 1 IEXCEN0 0 1 0 1 ‫ୁۉ‬ᇸኵ! घ૤‫্ୁۉ‬ᆩ 10 μA 210 μA 1 mA ฿ۙस٪ഗ RS2, RS1, RS0 = 1, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x8000 (AD7792), 0x800000 (AD7793)) ஢ଉ‫ײ‬स٪ഗ RS2, RS1, RS0 = 1, 1, 1Ǘฉ‫ۉ‬/ް࿋ = 0x5XXX (AD7792), 0x5XXX00 (AD7793) ௅߲ఇె๼෇ཚ‫ڢ‬ᆶᅃ߲ጆᆩ‫ڦ‬฿ۙस٪ഗLjᆩᇀԍ٪޿ ཚ‫ڦڢ‬฿ۙၯጚဣຕăAD7792ాዃᅃ߲16࿋฿ۙस٪ഗǗ AD7793ాዃᅃ߲24࿋฿ۙस٪ഗǗ฿ۙस٪ഗ‫ڦ‬ฉ‫ۉ‬/ް ࿋ኵྺ0x8000(00)ăُस٪ഗᇑ၎࠲‫ڦ‬஢ଉ‫ײ‬स٪ഗࠓ‫ׯ‬ ᅃ߲स٪ഗ‫ܔ‬ăසࡕᆩࢽഔ‫ాۯ‬ևईဣཥଭ‫ۉ‬ೝၯጚLjฉ ‫ްۉ‬࿋ኵॽԥጲ‫ޮۯ‬ႀă฿ۙस٪ഗྺ‫܁‬/ႀस٪ഗă‫ܔ‬฿ ۙस٪ഗ৊ႜႀ֡ፕ้LjAD7792/AD7793ՂႷ‫ت‬ᇀ੣ှఇ ๕ईู‫ۉ‬ఇ๕ă ஢ଉ‫ײ‬स٪ഗ๟ᅃ߲16࿋(AD7792)ई24࿋(AD7793)स٪ ഗă஢ଉ‫ײ‬स٪ഗԍ٪ADC‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕăAD7792/ AD7793ᆶෙ߲஢ଉ‫ײ‬स٪ഗLj௅߲ཚ‫ڢ‬ᆶᅃ߲ጆᆩ‫ڦ‬஢ଉ ‫ײ‬स٪ഗă஢ଉ‫ײ‬स٪ഗ਩ྺ‫܁‬/ႀस٪ഗă‫ܔړ‬஢ଉ‫ײ‬स ٪ഗ৊ႜႀ֡ፕ้LjADCՂႷ‫ت‬ᇀู‫ۉ‬ఇ๕ई੣ှఇ๕ă ኄၵस٪ഗሞฉ‫้ۉ‬๑ᆩ߾‫׍‬ၯጚ‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕ৊ႜ ದዃ)ኴႜၯጚ้‫ڦ‬ሺᅮྺ1*ǗᅺُLj߳ഗॲਏᆶփཞ‫ڦ‬ఐ ණဣຕă޿ၯጚဣຕኵൽਦᇀ໯჋एጚ‫ۉ‬უ)ాևएጚ‫ۉ‬უ ईྔևएጚ‫ۉ‬უ*ăසࡕᆩࢽഔ‫ాۯ‬ևईဣཥ஢ଉ‫ײ‬ၯጚLj ईኁ‫ܔ‬஢ଉ‫ײ‬स٪ഗኴႜႀ֡ፕLj޿ఐණኵॽԥጲ‫ޮۯ‬ ႀă Rev. B | Page 19 of 32 AD7792/AD7793 ADC‫ۉ‬ୟ႑တ 0 ߁ຎ AD7792/AD7793ྺ‫ࡼࠀگ‬ADCLjాዃΣ-Δۙ዆ഗĂ࣐؋ ഗĂएጚ‫ۉ‬უᇸĂᅏ՗‫ٷݣ‬ഗࢅೌాຕጴ୳հഗLjዷᄲᆩ ᇀ֪ଉ੻‫ۯ‬ༀ‫گྷݔ‬ೕ႑ࡽLj૩සუ૰‫ߌد‬ഗĂ‫ۉ‬ጱ‫ࢅ׹‬ ࿒‫֪܈‬ଉᆌᆩዐ‫ڦ‬႑ࡽă –20 (dB) –40 ௅߲ഗॲ‫ۼ‬ᆶෙֶ߲‫ݴ‬๼෇‫܋‬Lj੗ᅜԥದዃྺ࣐؋ఇ๕ई ࿮࣐؋ఇ๕ă޿ഗॲ़੗ᅜ֑ᆩాև1.17 Vएጚ‫ۉ‬უᄺ੗ᅜ ֑ᆩྔևएጚ‫ۉ‬უă཮12၂๖କഗॲ߾ፕ໯Ⴔ‫ڦ‬एԨ૶ থă –60 –100 GND AVDD VBIAS 0 100 120 ཮13. ‫߸ړ‬ႎ໏୲ྺ4.17 Hz้‫୳ڦ‬հഗၚᆌ MUX BUF Σ-Δ ADC IN-AMP SERIAL INTERFACE AND CONTROL LOGIC REFIN(+) GND AVDD DOUT/RDY DIN SCLK CS –20 DVDD INTERNAL CLOCK AD7792/AD7793 IOUT2 CLK ཮23/एԨ૶থ཮ –40 (dB) REFIN(–) 80 0 R C AIN2(–) 60 GND AVDD RREF 40 FREQUENCY (Hz) BAND GAP REFERENCE AIN1(+) AIN1(–) AIN2(+) 20 REFIN(+) REFIN(–) 04855-012 THERMOCOUPLE JUNCTION R 04855-018 –80 –60 ཮13዁཮16၂๖କփཞ໏୲ူ‫߳ڦ‬ዖૌ႙୳հഗ‫ڦ‬ೕ୲ၚ ᆌă 04855-019 –100 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (Hz) ཮14. ‫߸ړ‬ႎ໏୲ྺ16.7 Hz้‫୳ڦ‬հഗၚᆌ 0 –20 –40 –60 –80 –100 04855-020 ߵ਍๼‫߸؜‬ႎ໏୲‫ڦ‬փཞLjAD7792/AD7793֑ᄣ‫୳ڦ‬հഗ ᄺ୼ᆶփཞLjᅜՍᆫࣅ‫ܔ‬ଉࣅሯำࢅഗॲሯำ‫ڦ‬ᅞ዆ă‫ړ‬ ߸ႎ໏୲ኵሞ4.17 Hz዁12.5 Hz‫้ాྷݔ‬Ljഗॲ֑ᆩSinc3୳ հഗࢅ਩ኵ୳հഗă‫߸ړ‬ႎ໏୲ኵሞ16.7 Hz዁39 Hz‫ྷݔ‬ ా้Ljഗॲ֑ᆩঢ়Ⴊኟ‫ڦ‬Sinc3୳հഗă‫߸ړ‬ႎ໏୲‫ڟٳ‬ 16.7 Hz้Ljُ୳հഗ༵ࠃ50 Hz/60 Hzཞ้ᅞ዆ă‫߸ړ‬ႎ໏ ୲ኵሞ50 Hz዁242 Hz‫้ాྷݔ‬Lj֑ᆩSinc4୳հഗă‫߸ړ‬ႎ ໏୲‫ڟٳ‬470 Hz้Ljഗॲ֑ᆩৈᆶओ‫୳ڦీࠀݴ‬հഗă –80 (dB) ᆩࢽీࠕཚࡗՊ‫ײ‬ยዃAD7792/AD7793‫ڦ‬๼‫؜‬໏୲(fADC)ă ՗16ଚ‫؜‬କ੗ᆩ‫߸ڦ‬ႎ໏୲त၎ᆌ‫ॺڦ‬૬้क़ăຕጴ୳հ ഗ‫ڦ‬ዷᄲፕᆩ๟‫ز‬ఇ߅ඡᅞ዆ă‫߸ړ‬ႎ໏୲ྺ16.7 Hzई߸ ‫้گ‬Lj50 Hzࢅ60 Hzཞ้ᅞ዆‫ڦ‬ၳࡕፌॅǗᅺྺሞኄၵ߸ ႎ໏୲ူLj။հೕ୲ཞ้ྺ50 Hzࢅ60 Hză֖९཮14ă 0 500 1000 1500 2000 2500 FREQUENCY (Hz) ཮15. ‫߸ړ‬ႎ໏୲ྺ242 Hz้‫୳ڦ‬հഗၚᆌ Rev. B | Page 20 of 32 3000 AD7792/AD7793 0 ࿋स٪ഗኴႜ‫֡܁‬ፕ‫้ڦ‬ႾǗ཮4၂๖‫ܔ‬๼෇ᅎ࿋स٪ഗ ኴႜႀ֡ፕ‫้ڦ‬Ⴞăन๑ሞ‫ڼ‬ᅃْ‫֡܁‬ፕኮࢫDOUT/RDY ၍ୟ‫ۉߛڟ࣮ݓ‬ೝLjᄺ੗ᅜ‫ْٗܠ‬ຕ਍स٪ഗዐ‫܁‬ൽ‫؜‬၎ ཞ‫ڦ‬ጴăփࡗLjՂႷඓԍሞူᅃ๼‫߸؜‬ႎ݀ิኮമྜ‫ׯ‬ኄ ၵ‫֡܁‬ፕă૶Ⴤ‫܁‬ൽఇ๕ူLjኻీ‫ܔ‬ຕ਍स٪ഗ৊ႜᅃْ ‫֡܁‬ፕă –10 (dB) –20 –30 ‫ړ‬CS‫ت‬ᇀ‫ۉگ‬ೝጒༀ้Lj‫ز‬ႜথ੨੗ᅜሞෙ၍๕ఇ๕ူ߾ ፕ ă ُ ้ Lj SCLKĂ DINࢅ DOUT/RDYᆩ ઠ ᇑ AD7792/ AD7793ཚ႑ă੗ᅜᆩጒༀस٪ഗዐ‫ڦ‬RDY࿋॔๫ገ࣑๟‫ޏ‬ ঳ຐăኄዖ‫ݛ‬ӄ๢ᆩᇀᇑྲ੦዆ഗ৊ႜথ੨‫ڦ‬ᆌᆩăසႴ ॽ ᆩፕ঴ஓ႑ࡽLj੗ᅜᆩ‫܋‬੨ᆅগׂิ޿႑ࡽăሞྲ੦዆ ഗথ੨ᆌᆩዐLjॺᅱሞ௅ଇْຕ਍‫د‬๼ኮक़ॽSCLKዃྺߛ ‫ۉ‬ೝă –40 –60 04855-021 –50 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 FREQUENCY (Hz) ཮16. ‫߸ړ‬ႎ໏୲ྺ470 Hz้‫୳ڦ‬հഗၚᆌ ຕጴথ੨! AD7792/AD7793૧ᆩᅃፇೌాस٪ഗ੦዆ഄ੗Պ‫ీࠀײ‬ă ຕ਍ཚࡗഗॲ‫زڦ‬ႜথ੨ႀ෇ฉຎस٪ഗLjُথ੨࣏༵ࠃ ‫ܔ‬ኄၵೌాस٪ഗ‫܁ڦ‬ൽ‫ݡ‬࿚ăᇑഗॲ৊ႜ‫ڦ‬໯ᆶཚ႑਩ ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ăฉ‫ۉ‬ईް࿋ኮࢫLjഗ ॲ‫ܔځڪ‬ഄཚ႑स٪ഗኴႜႀ֡ፕăႀ෇ُस٪ഗ‫ڦ‬ຕ਍ ਦۨକথူઠ‫֡ڦ‬ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ፕLjᅜतُ‫֡܁‬ፕ ईႀ֡ፕ‫ܔڦ‬ၡ๟నᅃ߲स٪ഗăᅺُLjසႴၠഗॲా‫ڦ‬ ഄ໲स٪ഗాႀ෇ຕ਍LjՂႷ๯ံ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ ፕLjምኴႜ‫ܔ‬໯჋स٪ഗ‫ڦ‬ႀ֡ፕăසႴ‫܁‬ൽഄ໲स٪ഗ ా‫ڦ‬ຕ਍)჋ስ૶Ⴤ‫܁‬ൽఇ๕‫*ྔأ‬LjᄺՂႷံ‫ܔ‬ཚ႑स٪ ഗ৊ႜႀ֡ፕLj඗ࢫኴႜ‫ܔ‬໯჋स٪ഗ‫֡܁ڦ‬ፕă AD7792/AD7793‫زڦ‬ႜথ੨ᆯ຺߲႑ࡽፇ‫ׯ‬ǖCSĂDINĂ SCLKࢅDOUT/RDYăDIN၍ୟᆩᇀॽຕ਍‫د‬๼዁ೌాस٪ ഗ ዐ Lj DOUT/RDYሶ ᆩ ᇀ ٗ ೌ ా स ٪ ഗ ዐ इ ൽ ຕ ਍ ă SCLK๟ഗॲ‫زڦ‬ႜ้ዓ๼෇Lj໯ᆶຕ਍‫د‬๼)࿮ஃ๟DIN ฉ࣏๟DOUT/RDYฉ*਩ᇑSCLK႑ࡽ၎࠲ăDOUT/RDYᆅ গᄺ੗๼‫؜‬ຕ਍৽Ⴣ႑ࡽǗ‫ړ‬๼‫؜‬स٪ഗዐᆶႎຕጴጴ੗ ᆩ้Lj޿၍ୟՎྺ‫ۉگ‬ೝă‫ܔ‬ຕ਍स٪ഗ‫֡܁ڦ‬ፕྜ‫ׯ‬ ้Lj޿၍ୟް࿋ྺߛ‫ۉ‬ೝăຕ਍स٪ഗ߸ႎኮമLj޿၍ୟ ᄺࣷՎྺߛ‫ۉ‬ೝLj༵๖ሞُ้փᆌ‫ܔ‬ഗॲ৊ႜ‫֡܁‬ፕLjᅜ ඓԍሞ߸ႎຕ਍स٪ഗ‫ײࡗڦ‬ዐփࣷ݀ิຕ਍‫܁‬ൽ֡ፕă ᆩᇀ჋ስഗॲLj੗ᅜሞ‫߲ܠ‬ഗॲ‫ز‬ႜሞཞᅃཉጺ၍ฉ‫ڦ‬ဣ ཥዐ‫ܔ‬AD7792/AD7793৊ႜ঴ஓă AD7792/AD7793੗ᅜሞCSᆩፕኡཞօ႑ࡽ‫ڦ‬൧઄ူ߾ፕă ኄዖ‫ݛ‬ӄ๢ᆩᇀDSPথ੨ăُ้LjᆯᇀሞDSPዐLjCSᅃӯ ‫؜‬၄ሞSCLK‫ူڦ‬ইᄂኮࢫLjᅺُLj‫ڼ‬ᅃ࿋(MSB)ࣷԥCSᆶ ၳ‫ں‬ໃ‫؜‬ăኻᄲፏ๰้Ⴞຕᄲ൱LjSCLKՍ੗ᅜሞຕ਍ገ࣑ ኮक़૶Ⴤሏႜă ‫ܔ‬DIN๼෇ႀ෇ᅃ૶‫ڦز‬1Lj੗ᅜް࿋‫ز‬ႜথ੨ăසሞ዁ณ 32߲‫ز‬ႜ้ዓా‫׼‬ჄၠAD7792/AD7793၍ୟాႀ෇இड 1Lj੗ॽ޿‫ز‬ႜথ੨ް࿋ă‫ٱॲ෉ิׂړ‬ဃईဣཥࠤቱLj ीܸ‫ڞ‬ዂথ੨้Ⴞ‫ٱ‬ဃ้Ljኄዖ‫݆ݛ‬੗ඓԍॽথ੨ް࿋‫ڟ‬ ᅙኪጒༀăް࿋֡ፕ๑থ੨‫ܔځڪڟ࣮ݓ‬ཚ႑स٪ഗኴႜ ႀ֡ፕ‫ڦ‬ጒༀă޿֡ፕࣷॽ໯ᆶस٪ഗ‫ాڦ‬ඹް࿋‫ڟ‬ഄฉ ‫ۉ‬ኵăް࿋ࢫLjᆩࢽᆌ‫ځڪ‬500 μsም‫ݡ‬࿚‫ز‬ႜথ੨ă AD7792/AD7793੗ᅜದዃྺ૶Ⴤገ࣑ఇ๕ई‫ْڇ‬ገ࣑ఇ ๕ă֖९཮17዁཮19ă ཮3ࢅ཮4၂๖କᇑAD7792/AD7793૶থ‫้ڦ‬Ⴞ཮Ljഄዐ ᆩ ᇀ‫ܔ‬ഗॲ৊ႜ঴ஓă཮3၂๖‫ܔ‬AD7792/AD7793‫ڦ‬๼‫؜‬ᅎ Rev. B | Page 21 of 32 AD7792/AD7793 ‫ْڇ‬ገ࣑ఇ๕! ૶Ⴤገ࣑ఇ๕! ሞ‫ْڇ‬ገ࣑ఇ๕ူLjAD7792/AD7793ሞଇْገ࣑ኮक़‫ت‬ᇀ ࠲܏ఇ๕ăॽఇ๕स٪ഗዐ‫ڦ‬MD2ĂMD1ࢅMD0‫ݴ‬՚ยዃ ྺ0Ă0Ă1Lj੗ഔ‫ْڇۯ‬ገ࣑ăኄ้LjAD7792/AD7793ံ ኴႜฉ‫֡ۉ‬ፕLjምኴႜ‫ْڇ‬ገ࣑Lj඗ࢫ‫܏࠲࣮ݓ‬ఇ๕ăೌ ాና‫ږ‬ഗฉ‫ۉ‬Ⴔᄲ1 msăገ࣑Ⴔᄲ‫้ڦ‬क़‫ྺ܈׊‬2 × tADCă ‫ړ‬ገ࣑ྜ‫ࢫׯ‬LjDOUT/RDYՎྺ‫ۉگ‬ೝLjᅜՍ՗๖ገ࣑ྜ ‫ׯ‬ăٗຕ਍स٪ഗዐ‫܁‬ൽຕ਍ጴࢫLjDOUT/RDYՎྺߛ‫ۉ‬ ೝăසࡕCSྺ‫ۉگ‬ೝLjሞူᅃْገ࣑ྜ‫ׯ‬ኮമLjDOUT/ RDYॽԍ‫ۉߛ׼‬ೝăසՂᄲLjन๑DOUT/RDYᅙՎྺߛ‫ۉ‬ ೝLjᄺ੗ᅜ‫܁ْܠ‬ൽຕ਍स٪ഗă ฉ ‫ ࢫ ۉ‬Lj ఐ ණ ‫ ڦ‬ገ ࣑ ఇ ๕ ྺ ૶ Ⴤ ገ ࣑ ఇ ๕ ă AD7792/ AD7793ኴႜ૶Ⴤገ้࣑Lj௅ْገ࣑ྜ‫ࢫׯ‬Ljጒༀस٪ഗዐ ‫ڦ‬RDY࿋Վྺ‫ۉگ‬ೝăසࡕCSྺ‫ۉگ‬ೝLjሶ‫ړ‬ᅃْገ࣑ྜ ‫้ׯ‬LjDOUT/RDY၍ୟᄺࣷՎྺ‫ۉگ‬ೝăැᄲ‫܁‬ൽገ࣑঳ ࡕLjᆩࢽႴᄲ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕLjᅜՍኸ๖ူᅃ֡ ፕྺ‫܁‬ൽຕ਍स٪ഗ֡ፕăॽSCLKஞ؋แेᇀADCࢫLj ഗॲ૬ਗ਼ሞDOUT/RDYᆅগฉኴႜຕጴገ࣑ă‫܁‬ൽገ࣑঳ ࡕࢫLjDOUT/RDY‫ۉߛڟ࣮ݓ‬ೝăසႴᄲLjᆩࢽ੗ᅜ‫ْܠ‬ ‫܁‬ൽ޿स٪ഗă‫ڍ‬ᆩࢽՂႷඓԍሞူᅃْገ࣑ྜ‫ׯ‬മLjփ ‫ݡ‬࿚ຕ਍स٪ഗǗ‫ޏ‬ሶLjႎ‫ڦ‬ገ࣑঳ࡕॽ۪฿ă CS DIN 0x08 0x200A 0x58 DATA 04855-015 DOUT/RDY SCLK ཮17.‫ْڇ‬ገ࣑ CS 0x58 0x58 DIN DATA DATA 04855-016 DOUT/RDY SCLK ཮18. ૶Ⴤገ࣑ Rev. B | Page 22 of 32 AD7792/AD7793 ૶Ⴤ‫܁‬ൽ! ገ࣑֡ፕྜ‫ׯ‬മྜ‫ܔׯ‬ຕ਍ጴ‫܁ڦ‬ൽăසࡕሞူᅃْገ࣑ ྜ ‫ ׯ‬ኮ മ Lj ᆩ ࢽ ช ࿄ ‫ ܁‬ൽ ገ ࣑ ঳ ࡕ Lj ई ኁ ྺ AD7792/ AD7793༵ࠃ‫زڦ‬ႜ้ዓዜ೺ຕփፁᅜྜ‫ܔׯ‬ገ࣑ጴ‫܁ڦ‬ ൽLjሶ‫ူړ‬ᅃْገ࣑ྜ‫้ׯ‬Lj‫ز‬ႜ๼‫؜‬स٪ഗॽް࿋Ljႎ ገ࣑঳ࡕॽዃᇀ๼‫ز؜‬ႜस٪ഗዐă ੗ᅜ‫ܔ‬AD7792/AD7793৊ႜದዃLj๑‫ڥ‬௅ْገ࣑ྜ‫ׯ‬ኮ ࢫLjገ࣑঳ࡕጲ‫ۯ‬ዃᇀDOUT/RDY၍ୟฉǗܸ࿮Ⴔሞ௅ْ ‫ݡ‬࿚ຕ਍മ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕăॽ01011100ႀ෇ཚ ႑स٪ഗࢫLjᆩࢽኻႴྺADC༵ࠃ๢‫ڦړ‬SCLKዜ೺ຕLj न ੗ ੦ ዆ ሞ ఇ ຕ ገ ࣑ ྜ ‫ ࢫ ׯ‬Lj 16࿋ ई 24࿋ ጴ ጲ ‫ ۯ‬ዃ ᇀ DOUT/RDY၍ୟฉăADCᆌದዃྺ૶Ⴤገ࣑ఇ๕ă ැᄲཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕LjՂႷሞRDYᆅগྺ‫ۉگ‬ೝ้ॽኸ ସ01011000ႀ෇ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjADCࣷ ॔੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬LjᅜՍీথ๭ཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕‫ڦ‬ ኸସăُྔLjසࡕDINฉ૶Ⴤ‫؜‬၄32߲1LjADCॽް࿋ăᅺ ُLjሞ૶Ⴤ‫܁‬ൽఇ๕ူLjሞഗॲথ๭‫ڟ‬ኸସമLjDINᆌԍ ‫ۉگ׼‬ೝă ‫ړ‬DOUT/RDYՎྺ‫ۉگ‬ೝLj༵๖ገ࣑֡ፕᅙ঳ຐ้LjՂႷ ྺADC༵ࠃፁࠕ‫ڦ‬SCLKዜ೺ຕă඗ࢫLjຕ਍ገ࣑঳ࡕՍ ࣷዃᇀDOUT/RDY၍ୟฉă‫܁‬ൽገ࣑঳ࡕࢫLjDOUT/RDY ‫ۉߛڟ࣮ݓ‬ೝLj኱‫ူڟ‬ᅃገ࣑঳ࡕ੗ᆩྺኹăኄዖఇ๕ ူLjຕ਍ኻీԥ‫܁‬ൽᅃْLjଷྔLjᆩࢽՂႷඓԍሞူᅃْ CS 0x5C DIN DATA DATA DATA 04855-017 DOUT/RDY SCLK ཮19.૶Ⴤ‫܁‬ൽ Rev. B | Page 23 of 32 AD7792/AD7793 ‫ۉ‬ୟ௮ຎ! ૩සLj‫ړ‬ሺᅮยዃྺ64้Lj਩‫ߵݛ‬ሯำ‫ۆ‬႙ኵྺ40 nVLjኄ ၎‫ړ‬ᇀ21࿋ᆶၳ‫ݴ‬Ր୲ई18.5࿋‫ރރ‬ኵ‫ݴ‬Ր୲ă ఇె๼෇ཚ‫!ڢ‬ AD7792/AD7793ᆶ3ֶ߲‫ݴ‬ఇె๼෇ཚ‫ڢ‬ă‫ړ‬ഗॲሏႜሞ ࣐؋ఇ๕ူ้Ljኄၵཚ‫ॽڢ‬ᇑೌా࣐٪‫ٷݣ‬ഗ၎૶Ǘܸ‫ړ‬ ഗॲሏႜሞ࿮࣐؋ఇ๕ူ้Ljཚ‫ڢ‬኱থᇑۙ዆ഗ၎૶ăሞ ࣐؋ఇ๕ူ(ದዃस٪ഗዐ‫ڦ‬BUF࿋ยዃྺ1)Lj๼෇ཚ‫ڢ‬ઍ ෇࣐؋‫ٷݣ‬ഗ‫ߛڦ‬ፆੇ๼෇पăᅺُLj๼෇‫ࠕీ܋‬ఱ๴ড ‫ڦٷ‬ᇸፆੇLj๢ᆩᇀఫၵᇑྔևፆႠ‫ߌد‬ഗ኱থ၎૶‫ڦ‬ᆌ ᆩLj૩සᆌՎऺई‫ۉ‬ፆ๕࿒‫܈‬ॠ֪ഗ(RTD)‫ڪ‬ă ‫ړ‬BUF = 0้Ljഗॲሞ࿮࣐؋ఇ๕ူ߾ፕăኄॽ‫ڞ‬ዂডߛ‫ڦ‬ ఇె๼෇‫ୁۉ‬ă൩ጀᅪLj޿࿮࣐؋๼෇ୟ০੗ྺൻ‫ۯ‬ᇸ༵ ࠃ‫ۯ‬ༀ‫޶ڦ‬ሜăᅺُLj๼෇ᆅগฉ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీ ࣷᆅഐሺᅮဃֶLjਏ༹ൽਦᇀൻ‫ۯ‬ADC๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼ ‫؜‬ፆੇă՗19၂๖କྺ‫ݞ‬ኹሞ20࿋‫ݴ‬Ր୲຤ೝཉॲူׂิ ሺᅮဃֶLj࿮࣐؋ఇ๕ူྔև‫ۉ‬ፆ/‫ۉ‬ඹ‫ڦ‬ඹႹኵă ՗19. 20࿋‫ݴ‬Ր୲ཉॲူLj࿮ሺᅮဃֶ‫ྔڦ‬ևR-Cፇࢇ C (pF) R (Ω) 50 9k 100 6k 500 1.5 k 1000 900 5000 200 AD7792/AD7793ৈሞ‫ړ‬ሺᅮኵྺ1ई2้Ljሏႜሞ࿮࣐؋ఇ ๕ူă‫ړ‬ሺᅮኵ߸ߛ้Lj࣐؋ഗጲ‫ۯ‬๑ీă࣐؋ఇ๕ူLj ਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 100 mV዁AVDD – 100 mVኮ क़ă‫ړ‬ሺᅮኵ‫ڟٳ‬4ई߸ߛ้Lj๑ీᅏ՗‫ٷݣ‬ഗă‫ړ‬ᅏ՗ ‫ٷݣ‬ഗ੗ᆩ้Ljਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 300 mV዁ AVDD – 1.1 Vኮक़ăሞยۨࠌఇ‫ۉ‬უ้LjᆩࢽՂႷጀᅪฉ ຎ၌዆LjᅜՍԍኤ‫ۉ‬უփ‫ࡗג‬ฉຎ၌ኵLjܸٗՆ௨ই‫گ‬ഗ ॲ‫ڦ‬၍ႠႠీࢅሯำႠీă ࿮࣐؋ఇ๕ူLjਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔڦ‬ሞGND – 30 mV዁ AVDD + 30 mVኮक़ă޶ਨ‫ܔ‬๼෇‫ۉ‬უ၌ኵྺ॔੦၎‫ܔ‬ᇀ GND‫ڦ‬ኈມटႠၭ႑ࡽ༵ࠃକཉॲă ᅏ՗‫ٷݣ‬ഗ ሞAD7792/AD7793ాLj੗ཚࡗຕጴ‫ݛ‬๕ॽఇె๼෇႑ࡽ‫ݣ‬ ‫ٷ‬1዁2Ԡă‫ڍ‬๟Lj‫ړ‬ሺᅮྺ4ई߸ߛ้Lj࣐؋ഗ๼‫؜‬႑ࡽ ॽแेᇀೌాᅏ՗‫ٷݣ‬ഗ‫ڦ‬๼෇‫܋‬ă‫گ‬ሯำᅏ՗‫ٷݣ‬ഗ‫ڦ‬ ٪ሞᅪ࿆ጣၭ‫܈ޗ‬႑ࡽ੗ᅜሞAD7792/AD7793ాԥ‫ٷݣ‬Lj ཞ้ධ඗ԍ‫؜׼‬෥‫ڦ‬ሯำႠీă ૧ ᆩ ದ ዃ स ٪ ഗ ዐ ‫ ڦ‬࿋ G2዁ ࿋ G0Lj ੗ ᅜ ॽ AD7792 /AD7793‫ڦ‬ሺᅮยዃྺ1Ă2Ă4Ă8Ă16Ă32Ă64ई128ăᅺ ُLj‫֑ړ‬ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ้Lj‫ڇ‬टႠ‫ۉ‬უ‫ྺྷݔ‬0 mV዁20 mV‫ڟ‬0 V዁2.5 VLjܸມटႠ‫ۉ‬უ‫ྺྷݔ‬±20 mV዁ ±2.5 Vă‫ړ‬ᅏ՗‫ٷݣ‬ഗ੗ᆩ้)ሺᅮ≥ 4*Ljࠌఇ‫ۉ‬უኵ((AIN (+) + AIN(–))/2)փ‫گڥ‬ᇀ0.5 Vă සࡕAD7792/AD7793֑ᆩ‫ۉ‬უኵᇑAVDD၎‫ྔڦڪ‬ևएጚ ‫ۉ‬უᇸLjሶሞᅏ՗‫ٷݣ‬ഗᆶၳ‫ڦ‬൧઄ူLjྺକԍኤీࠕኟ ‫ ߾ ׉‬ፕ Lj ఇ ె ๼ ෇ ႑ ࡽ ‫ ۉ ڦ‬უ փ ‫ ߛ ڥ‬ᇀ VREF/ሺ ᅮ ‫ڦ‬ 90%ă ມटႠ/‫ڇ‬टႠದዃ AD7792/AD7793‫ڦ‬ఇె๼෇‫܋‬੗থ๴ሞ‫ڇ‬टႠईມटႠ๼ ෇‫ۉ‬უ‫ྷݔ‬ăມटႠ๼෇‫ྷݔ‬փ‫پ‬՗ഗॲ੗ᅜఱ๴၎‫ܔ‬ᇀ ဣཥGND‫ۉ޶ڦ‬უăAIN(+)๼෇‫ڦ܋‬ມटႠ႑ࡽࢅ‫ڇ‬टႠ ႑ࡽ਩ᅜAIN(−)๼෇‫ۉڦ܋‬უྺएጚă૩සLjසࡕAIN(−) ྺ2.5 VLjADCದዃྺ‫ڇ‬टႠఇ๕Ljሺᅮྺ1LjሶAIN(+)ᆅ গ‫ڦ‬๼෇‫ۉ‬უ‫ྺྷݔ‬2.5 V዁5 Vă සࡕADCದዃྺມटႠఇ๕LjሶAIN(+)๼෇‫ڦ܋‬ఇె๼෇ ‫ྺྷݔ‬0 V዁5 Văཚࡗ‫ܔ‬स٪ഗ‫ڦ‬U/B࿋৊ႜՊ‫ײ‬Lj੗ॽ ADCದዃྺ‫ڇ‬ມटႠఇ๕ईມटႠఇ๕ă ຕ਍๼‫؜‬Պஓ! ‫ړ‬ADCದዃྺ‫ڇ‬टႠ߾ፕఇ๕้Lj๼‫؜‬ஓྺጲ඗)኱থ*ܾ ৊዆ஓǗଭֶ‫ݴ‬๼෇‫ۉ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ00…00Ljዐक़‫ۉ‬ೝ‫ۉ‬ უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 100...000Lj ஢ ଉ ‫ ײ‬๼ ෇ ‫ ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 111...111ă Code = (2N × AIN × GAIN)/VREF ‫ړ‬ADCದዃྺມटႠ߾ፕఇ๕้Lj๼‫؜‬ஓྺೋᅎܾ৊዆ ஓǗ޶஢ଉ‫ۉײ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ000...000Ljଭֶ‫ݴ‬๼෇‫ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 100...000Lj ኟ ஢ ଉ ‫ ײ‬๼ ෇ ‫ ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 111...111ăඪࢆ‫ܔ‬ᆌᇀఇె๼෇‫ۉ‬უ‫ڦ‬๼‫؜‬ஓ਩੗՗๖ ྺǖ Code = 2N – 1 × [(AIN × GAIN /VREF) + 1] ഄዐǖAIN՗๖ఇె๼෇‫ۉ‬უǗGAIN՗๖ᅏ՗‫ٷݣ‬ഗ‫ڦ‬ย ዃDŽ1዁128DžǗAD7792‫ڦ‬Nኵྺ16LjAD7793‫ڦ‬Nኵྺ24ă Rev. B | Page 24 of 32 AD7792/AD7793 භ܏‫!ୁۉ‬ AD7792/AD7793ాዃଇ߲100 nA࢛ୁ݀ิഗǖᅃ߲ᆩᇀ༵ ࠃٗAVDD‫ڟ‬AIN(+)‫ڦ‬ᇸ‫ୁۉ‬Ljଷᅃ߲ᆩᇀ༵ࠃٗAIN(−)‫ڟ‬ GND‫ڦ‬ဌ‫ୁۉ‬ăኄၵ‫ୁۉ‬ൎ࣑዁჋ۨ‫ڦ‬ఇె๼෇‫ܔ‬ăኄଇ ߲‫ୁۉ‬ईਸई࠲Ljൽਦᇀದዃस٪ഗዐ‫ڦ‬භ܏‫ୁۉ‬๑ీ (BO)࿋ăሞఇె๼෇ཚ‫ڢ‬ฉኴႜ֪ଉ֡ፕኮമLj੗ᅜ૧ᆩ ኄၵ‫ୁۉ‬ઠඓණྔև‫ߌد‬ഗ๟‫ޏ‬ኟ‫߾׉‬ፕăথཚභ܏‫ୁۉ‬ ࢫLj‫ྔ෇ୁୁۉ‬և‫ߌد‬ഗ‫ۉ‬ୟLj඗ࢫՍ੗ሞఇె๼෇ཚ‫ڢ‬ ฉ֪ଉ๼෇‫ۉ‬უăසࡕ֪‫ۉڦڥ‬უኵྺ஢ଉ‫ײ‬LjᆩࢽႴᄲ ඓණׂิ஢ଉ‫ۉײ‬უ‫ڦ‬ᇱᅺă஢ଉ‫܁ײ‬ຕᅪ࿆ጣ੗ీ٪ሞ മ‫ߌد܋‬ഗਸୟLjᄺ੗ీ๟മ‫ߌد܋‬ഗࡗሜLjཚࡗ஢ଉ‫ײ‬ ๼‫؜‬՗၄‫؜‬ઠLjईኁඍณएጚ‫ۉ‬უLjᅺُLj‫ڞ‬ዂຕ਍ᶏ࿋ ዁ඇ1ă ‫ړ‬๼‫ྺ؜‬ඇ1้LjᆩࢽႴᄲॠֱ๟‫ޏ‬٪ሞኄෙዖ൧઄Lj඗ࢫ ፔ‫؜‬ಒ܏ăසࡕ֪‫ۉڦڥ‬უྺ0 VLjሶ੗ీ๟‫ߌد‬ഗ‫܌‬ୟă ኟ‫߾׉‬ፕ้Ljᆌॽ0ႀ෇ದዃस٪ഗዐ‫ڦ‬BO࿋Ljᅜ࠲Կኄ ၵභ܏‫ୁۉ‬ă‫ୁۉ‬ᇸ߾ፕሞ‫ࡀ׉‬ਨ‫ܔ‬๼෇‫ۉ‬უ‫ాྷݔ‬Lj࣐ ؋ഗਸഔă घ૤‫!ୁۉ‬ AD7792/AD7793ాዃଇ߲೅ದ‫ॲ෉ڦ‬੗ದዃ࢛ୁᇸLjഄ๼ ‫ୁۉ؜‬੗ཚࡗՊ‫ײ‬ยྺ10 μAĂ210 μAई1 mAăઠጲAVDD ‫ڦ‬ኄଇ߲ᇸ‫ୁۉ‬኱থ‫د‬๼዁ഗॲ‫ڦ‬IOUT1ईIOUT2ᆅগ ాăኄၵ‫ୁۉ‬ᇸཚࡗIOस٪ഗዐ‫ڦ‬ದዃ࿋৊ႜ੦዆ă૧ᆩ ದዃ࿋੗ᅜ๑ీ‫ୁۉ‬ᇸĂॽ‫ୁۉ‬ᇸ‫ڞ‬ၠIOUT1ईIOUT2ᅜ त჋ስ‫ୁۉ‬ኵăኄၵ‫ୁۉ‬ᇸ੗ᅜᆩઠघ૤ྔևፆႠ‫ൃۉ‬ई RTD‫ߌد‬ഗă ೋዃ‫ۉ‬უ݀ิഗ! AD7792/AD7793ాዃᅃ߲ೋዃ‫ۉ‬უ݀ิഗă໲੗ॽ໯჋๼ ෇ཚ‫ۉڦ܋޶ڦڢ‬უೋዃ዁AVDD/2ăኄሞඤ‫ۉ‬౾‫ڦ‬ᆌᆩዐ ‫׉ݥ‬ᆶᆩLjᅺྺ‫ړ‬ሺᅮኵߛᇀ2้LjՂႷॽඤ‫ۉ‬౾ׂิ‫ڦ‬ ‫ۉ‬უೋዃຕ‫ޚ‬኱ୁ‫ۉ‬უăኄ๟ՂႷ‫ڦ‬Ljᅺྺᅏ՗‫ٷݣ‬ഗႴ ᄲᅃۨ‫ڦ‬ᇧଉLjᅜඓԍ‫ܔ‬থৎGNDईAVDD‫ڦ‬႑ࡽ৊ႜ৛ ඓ‫ڦ‬ገ࣑ă ೋዃ‫ۉ‬უ݀ิഗᆯದዃस٪ഗዐ‫ڦ‬VBIAS1࿋ĂVBIAS0࿋ ࢅBOOST࿋ࠌཞ੦዆ăೋዃ‫ۉ‬უ݀ิഗ‫ڦ‬ฉ‫้ۉ‬क़ൽਦᇀ ޶ሜ‫ۉ‬ඹ‫ٷڦ‬ၭăྺକ๢ᆌডߛ‫޶ڦ‬ሜ‫ۉ‬ඹLjAD7792/ AD7793ದᆶᅃBOOST࿋ă‫ُړ‬࿋ዃ1้Ljೋዃ‫ۉ‬უ݀ิഗ ‫ߛ༵ࡼࠀڦ‬Lj੗‫ޗٷ‬໫‫܌‬ฉ‫้ۉ‬क़ă཮10၂๖କBOOSTྺ 0ࢅ1้Ljഗॲሞփཞ޶ሜ‫ۉ‬ඹཉॲူ‫ڦ‬ฉ‫้ۉ‬क़ă ‫ړ‬ೋዃ‫ۉ‬უ݀ิഗ੗ᆩ൐BOOST=0้LjAD7792/AD7793‫ڦ‬ ࠀࡼ༵ߛ40 μAǗ‫ืړ‬უࠀీ๑ీ้ഗॲࠀࡼ༵ߛ250 μAă एጚ‫ۉ‬უ! AD7792/AD7793़੗૧ᆩഴ෇๕1.17 Vएጚ‫ۉ‬უᇸྺADCࠃ ‫ۉ‬Ljᄺ੗ᅜ๑ᆩྔևएጚ‫ۉ‬უᇸă޿ഴ෇๕एጚ‫ۉ‬უᇸਏ ᆶ‫گ‬ሯำĂ‫گ‬࿒೏༬ႠLj࿒೏‫ۆ‬႙ኵྺ4 ppm/°Că૧ᆩྔ ևएጚ‫ۉ‬უᇸ้LjADC‫ڦ‬ཚ‫ڢ‬ਏᆶྜඇֶ‫ݴ‬๼෇ీ૰ăದ ዃस٪ഗዐ‫ڦ‬REFSEL࿋ᆩᇀ჋ስAD7792/AD7793‫ڦ‬एጚ‫ۉ‬ უᇸăాևएጚ‫ۉ‬უᇸԥ჋ዐࢫLjएጚ‫ۉ‬უᇸᇑۙ዆ഗሞ ഗॲాև၎૶ăREFINᆅগփኧ‫ా׼‬ևएጚ‫ۉ‬უᇸă ኄၵֶ‫ݴ‬๼෇‫ࠌڦ‬ఇ‫ۉ‬უ‫ྺྷݔ‬GND዁AVDDăएጚ‫ۉ‬უ ๼෇๟࿮࣐؋๕‫ڦ‬ǗᅺُLjࡗ‫ڦٷ‬R-Cᇸፆੇࣷ‫ڞ‬ዂሺᅮ ဃֶăՔ‫׬‬एጚ‫ۉ‬უREFIN(REFIN(+)−REFIN(−))ྺ2.5 VLj ‫ڍ‬AD7792/AD7793੗ᅜ֑ᆩ‫ڦ‬एጚ‫ۉ‬უ‫ྺྷݔڦ‬0.1V዁ AVDDăසࡕᆌᆩዐఇె๼෇‫ߌدڦ܋‬ഗ‫ڦ‬घ૤‫ۉ‬უईघ૤ ‫ୁۉ‬ᄺྺഗॲ༵ࠃएጚ‫ۉ‬უLjሶ੗ᅜၩ‫أ‬घ૤ᇸዐ‫گ‬ೕሯ ำ‫ڦ‬ᆖၚLjഄᇱᅺ๟ᆌᆩ๟Բ୲๕‫ڦ‬ăසࡕሞ‫ݥ‬Բ୲๕ᆌ ᆩዐ֑ᆩAD7792/AD7793Ljᆌ๑ᆩ‫گ‬ሯำएጚ‫ۉ‬უᇸă ሞAD7792/AD7793ዐLjॺᅱ֑ᆩ2.5Vएጚ‫ۉ‬უᇸLjԈઔ ADR381ࢅADR391Ljܾኁ਩ྺ‫گ‬ሯำĂ‫ࡼࠀگ‬एጚ‫ۉ‬უ ᇸăଷྔLjएጚ‫ۉ‬უ๼෇ీࠕ༵ࠃߛፆੇĂ‫ۯ‬ༀ޶ሜăᆯ ᇀ߳एጚ‫ۉ‬უ๼෇‫ڦ‬๼෇ፆੇ๟‫ۯ‬ༀ‫ڦ‬Ljᅺُኄၵ๼෇‫܋‬ ฉ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీࣷ‫ڞ‬ዂ኱ୁሺᅮဃֶLjਏ༹ൽਦ ᇀൻ‫ۯ‬एጚ‫ۉ‬უ๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼‫؜‬ፆੇă ᅜฉླྀ४‫ڦ‬एጚ‫ۉ‬უᇸ)૩සADR391*ཚ‫׉‬ਏᆶ‫گ‬๼‫؜‬ፆ ੇLjᅺܸLjREFIN(+)ฉ੗ᅜ٪ሞඁ᳘‫ۉ‬ඹLj‫ڍ‬փࣷߴဣཥ ‫ټ‬ઠሺᅮဃֶăසࡕሞྔև‫ۉ‬ፆฉइൽएጚ๼෇‫ۉ‬უLjሶ ᅪ࿆ጣएጚ‫ۉ‬უ๼෇‫܋‬ਏᆶ࢔‫ྔڦٷ‬ևᇸፆੇă‫ܔ‬ᇀኄዖ ‫ۉ‬ୟದዃLjփླྀ४ሞREFINᆅগฉ৊ႜྔևඁ᳘ă ް࿋! ‫ܔ‬AD7792/AD7793૶Ⴤႀ෇32߲1Lj੗ᅜॽഗॲ‫ۉڦ‬ୟࢅ ‫ز‬ႜথ੨ް࿋ăኄᄣፔ੗ᅜॽ໯ᆶೌాस٪ഗް࿋ྺఐණ ኵLjཞ้ް࿋இडĂຕጴ୳հഗࢅఇెۙ዆ഗăฉ‫้ࣷۉ‬ ጲ‫ۯ‬ኴႜް࿋֡ፕăഔ‫ްۯ‬࿋֡ፕࢫLjᆩࢽՂႷ‫ځڪ‬500 μs ֍ీ‫ݡ‬࿚ೌాस٪ഗăසࡕSCLK၍ୟฉ‫ڦ‬ሯำ‫ڞ‬ዂ‫ز‬ႜথ ੨ՎྺᅴօጒༀLjሶႴᄲኴႜް࿋ᅜ࣬ްཞօࠀీă Rev. B | Page 25 of 32 AD7792/AD7793 AVDD॔੦ഗ ADC‫أ‬କీࠕገ࣑ྔև‫ۉ‬უᅜྔLj࣏੗ᅜ॔੦AVDDᆅগฉ ‫ۉڦ‬უă‫ړ‬CH2዁CH0࿋਩ྺ1้LjAVDDᆅগฉ‫ۉڦ‬უሞ ాևປ३6ԠLj໯इ‫ۉڦڥ‬უแेᇀΣ-Δۙ዆ഗኮฉLjഗॲ ֑ᆩ1.17 Vాևएጚ‫ۉ‬უൻ‫ۯ‬ᅜํ၄ఇຕገ࣑ăُ༬Ⴀ‫ڦ‬ ᆩ‫ت‬ሞᇀ੗ᅜ॔੦‫ۉ‬ᇸ‫ۉ‬უ‫ڦ‬հ‫ۯ‬ă ၯጚ AD7792/AD7793༵ࠃ4ዖၯጚఇ๕ăᆩࢽ੗ཚࡗ‫ܔ‬ఇ๕स ٪ഗా‫ڦ‬ఇ๕࿋৊ႜՊ‫ײ‬ઠ჋ስၯጚఇ๕ăၯጚఇ๕‫ݴ‬՚ ྺాևଭ‫ۉ‬ೝၯጚĂాև஢ଉ‫ײ‬ၯጚĂဣཥଭ‫ۉ‬ೝၯጚࢅ ဣཥ஢ଉ‫ײ‬ၯጚLjኴႜၯጚ֡ፕ੗௽၂ই‫گ‬ᅺሯำׂܸิ ‫ڦ‬฿ۙဃֶࢅ஢ଉ‫ײ‬ဃֶă௅ْገ࣑ྜ‫ࢫׯ‬LjႴ૧ᆩADC ၯጚस٪ഗ‫ܔ‬ADCገ࣑঳ࡕ৊ႜۙኝLj඗ࢫLjॽۙኝ঳ࡕ ႀ෇ຕ਍स٪ഗăገ࣑঳ࡕံ३ඁ฿ۙၯጚဣຕLj඗ࢫ‫ױ‬ ᅜ஢ଉ‫ײ‬ဣຕă ྺഔ‫ۯ‬ၯጚࠀీLjՂႷॽ๢‫ڦړ‬ኵႀ෇ఇ๕स٪ഗዐ‫ڦ‬ MD2዁MD0࿋ă‫ړ‬ၯጚྜ‫ࢫׯ‬Lj၎ᆌၯጚस٪ഗ‫ాڦ‬ඹࣷ ԥ߸ႎLjጒༀस٪ഗዐ‫ڦ‬RDY࿋ԥዃ1LjDOUT/RDYᆅগ Վྺ‫ۉگ‬ೝ)සࡕCSྺ‫ۉگ‬ೝ*LjAD7792/AD7793‫࣮ݓ‬዁੣ ှఇ๕ă ాևଭ‫ۉ‬ೝई஢ଉ‫ײ‬ၯጚ೺क़Lj߳ଭ๼෇ࢅ஢ଉ‫ײ‬๼෇ሞ ాևጲ‫૶ۯ‬থ዁ADC๼෇ᆅগă඗ܸLjဣཥၯጚሶᄲ൱ሞ ഔ‫ۯ‬ၯጚఇ๕ኮമLjॽဣཥଭ‫ۉ‬ೝ‫ۉ‬უࢅဣཥ஢ଉ‫ۉײ‬უ แेᇀADCăኄᄣీၩ‫أ‬ADC‫ྔڦ‬ևဃֶă ٗ֡ፕฉઠੂLjၯጚ৽ၟଷᅃْADCገ࣑ăසႴᄲኴႜଭ ‫ۉ‬ೝၯጚLjՂႷሞኴႜ஢ଉ‫ײ‬ၯጚኮമኴႜଭ‫ۉ‬ೝၯጚă ဣཥ෉ॲᆌ॔๫ጒༀस٪ഗዐ‫ڦ‬RDY࿋ईDOUT/RDYᆅ গLjཚࡗᅃ߲୾კႾଚईዐ܏ൻ‫ײۯ‬Ⴞඓۨၯጚࢆ้঳ ຐă ాև฿ۙၯጚࢅဣཥ฿ۙၯጚ਩Ⴔᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ೺ă ᆯᇀADCԨวీ‫׼‬Ⴤၩ‫أ‬฿ۙLjُ้Lj࿮Ⴔኴႜాև฿ۙ ၯጚă ኴႜాև஢ଉ‫ײ‬ၯጚLj஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫ۯ‬ᇑُၯጚ჋ ۨ‫ڦ‬ఇె๼෇‫܋‬၎૶ă‫ړ‬ሺᅮྺ1้Ljྜ‫ׯ‬ၯጚႴᄲ2߲ገ ࣑ዜ೺ă‫ܔ‬ᇀ߸ߛሺᅮLjኴႜ஢ଉ‫ײ‬ၯጚႴᄲ4߲ገ࣑ዜ ೺ăDOUT/RDYሞၯጚഔ‫ࢫۯ‬Վྺߛ‫ۉ‬ೝLjሞၯጚྜ‫ࢫׯ‬ ࣬ް‫ۉگ‬ೝă ၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕ ԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă‫ړ‬ሺᅮྺ128้Ljփ ሎႹኴႜాև஢ଉ‫ײ‬ၯጚLj‫ڍ‬ሎႹኴႜဣཥ஢ଉ‫ײ‬ၯጚă ௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚLjᅜ Սॽ஢ଉ‫ײ‬ဃֶই዁ፌၭă ాև஢ଉ‫ײ‬ၯጚኻీሞ༬ۨ߸ႎ໏୲ཉॲူኴႜă‫ړ‬ሺᅮ ྺ1Ă2ࢅ4้Lj੗ᅜሞඪᅪ߸ႎ໏୲ཉॲူኴႜాև஢ଉ ‫ײ‬ၯጚă‫ڍ‬๟Lj‫ܔ‬ᇀ߸ߛሺᅮLjሶኻీሞ߸ႎ໏୲ၭᇀई ‫ڪ‬ᇀ16.7 HzĂ33.2 Hzࢅ50 Hz‫ڦ‬ཉॲူኴႜă඗ܸLj஢ଉ ‫ײ‬ဃֶփᅺ߸ႎ໏୲ܸ߀ՎLjᅺُLjሞగᅃ߸ႎ໏୲ཉॲ ူኴႜ‫ڦ‬ၯጚ‫ܔ‬໯ᆶ߸ႎ໏୲਩ᆶၳ(्ยሺᅮईएጚ‫ۉ‬უ ᇸԍ‫׼‬փՎ)ă ྜ‫ׯ‬ဣཥ஢ଉ‫ײ‬ၯጚႴᄲ2߲ገ࣑ዜ೺Ljᇑሺᅮยዃ࿮ ࠲ăဣཥ஢ଉ‫ײ‬ၯጚ੗ᅜሞ໯ᆶሺᅮࢅ໯ᆶ߸ႎ໏୲ཉॲ ူኴႜăසႴཞ้ኴႜဣཥ฿ۙၯጚᇑဣཥ஢ଉ‫ײ‬ၯጚLj ᆌሞഔ‫ۯ‬ဣཥ஢ଉ‫ײ‬ၯጚമኴႜဣཥ฿ۙၯጚă থ‫ࢅں‬քਆ! ᆯᇀADC‫ڦ‬ఇె๼෇ࢅएጚ๼෇਩ྺֶ‫ݴ‬๼෇LjᅺُLjఇ ెۙ዆ഗዐ‫ܠڦ‬ຕ‫ۉ‬უ਩ྺࠌఇ‫ۉ‬უăഗॲ‫؜ڦ‬෥ࠌఇᅞ ዆Ⴀీ੗ၩ‫أ‬ኄၵ๼෇႑ࡽዐ‫ࠌڦ‬ఇሯำăຕጴ୳հഗ੗ ᅞ዆‫ۉ‬ᇸฉ‫ټ੻ڦ‬ሯำLj‫ڍ‬࿮݆ᅞ዆ఫၵೕ୲ྺۙ዆ഗ֑ ᄣೕ୲‫ڦ‬ኝຕԠ‫ڦ‬ሯำăଷྔLjຕጴ୳հഗ࣏ీࠕၩ‫أ‬ઠ ጲఇెࢅएጚ๼෇‫ڦ܋‬ሯำLj‫ڍ‬മ༵๟ኄၵሯำᇸுᆶ๑ ఇెۙ዆ഗԏࢅăᅺُLjᇑ‫د‬ཥߛ‫ݴ‬Ր୲ገ࣑ഗ၎ԲLj AD7792/AD7793ਏ ᆶ ߸ ഽ ‫ ੇ ڦ‬ሯ ీ ૰ ă ඗ ܸ Lj ᆯ ᇀ AD7792/ AD7793‫ݴڦ‬Ր୲टߛLj‫ڍ‬ഄሯำ‫ۉ‬ೝ‫گ׉ݥ‬Ljᅺ ُLjՂႷ৉ั‫ځܔ‬থ‫ࢅں‬քਆă AD7792/AD7793໯ሞ‫ڦ‬ᆇຘ‫ۉ‬ୟӱሞยऺ้ᆌॽఇెև‫ݴ‬ ᇑຕጴև‫ݴݴ‬૗Ljժ၌዆ሞ‫ۉ‬ୟӱ‫ڦ‬༬ۨ൶ᇘాăྺํ၄ ፌॅೡԸLjথ‫֫ں‬ᅃӯᆌ৑ଉณ֑ᆩ์ਗ਼रຍă ॺᅱॽAD7792/AD7793‫ڦ‬GNDᆅগ૶‫ڟ‬ဣཥ‫ڦ‬AGND֫ă ࿮ஃ֑ൽࢆዖքਆLjᆩࢽ਩ՂႷጀᅪࡀࣄဣཥዐ‫࣮ڦୁۉ‬ ୁୟ০Ljඓԍ໯ᆶ‫ୁ࣮ڦୁۉ‬ୟ০਩৑੗ీ੍ৎ‫ٳڟୁۉ‬ ణ‫ںڦ‬໯ঢ়ࡗ‫ڦ‬ୟ০ăൎကഽ዆ຕጴ‫ࡗୁୁۉ‬քਆ‫ڦ‬ AGNDև‫ݴ‬ă Rev. B | Page 26 of 32 AD7792/AD7793 ॽAD7792/AD7793‫ڦ‬থ‫ݣ֫ں‬ሞഄူ‫ݛ‬Lj੗ᅜ‫ݞ‬ኹሯำ᳘ ࢇăAD7792/AD7793‫ۉڦ‬ᇸ၍ୟᆌ֑ᆩ৑੗ీ੻‫ڦ‬ጽ၍Lj ᅜ༵ࠃ‫گ‬ፆੇୟ০Ă३ၭ‫ۉ‬ᇸ၍ୟฉ‫ڦ‬றِሯำၳᆌăྺ Ն௨ၠ‫ۉ‬ୟӱฉ‫ڦ‬ഄ໲և‫ޖݴ‬พሯำLjᆌ૧ᆩຕጴ‫ں‬ೡԸ ้ዓ႑ࡽ‫੺ڪ‬໏ਸ࠲႑ࡽLj൐ԍኤ้ዓ႑ࡽᇺ૗ఇె๼ ෇ă Ն௨ຕጴ႑ࡽᇑఇె႑ࡽ঍۠ă‫ۉ‬ୟӱ၎‫ܔ‬ଇ֨ฉ‫ڦ‬ጽ၍ ᆌ‫ړ‬Եُ‫ؽ‬኱ăኄᄣፔᆶዺᇀই‫ۉگ‬ୟӱฉ‫ڦ‬ઍཚၳᆌă ྲ‫ټ‬၍रຍሞణമੂઠ๟ፌॅ჋ስLj‫ڍ‬ኄዖरຍ‫ܔ‬ᇀມ௬ ‫ۉ‬ୟӱ࿄Ղጺ๟੗ႜă֑ᆩኄዖरຍ้Lj‫ۉ‬ୟӱ‫ڦ‬ᇮॲ֨ ጆᆩᇀথ‫֫ں‬Lj႑ࡽጽ၍ሶքยሞࡰথ֨ă ๑ᆩߛ‫ݴ‬Ր୲ADC้Ljଆࡻ‫ڦ‬ඁ᳘ๆ‫ݴ‬ዘᄲăᆌॽ10 μF᮳ ‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴LjॽAVDDඁ᳘‫ڟ‬GNDăཞ้ᆌ ॽ10 μF᮳‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴LjॽDVDDඁ᳘‫ڟ‬ဣཥ ‫ڦ‬DGND֫Ǘኄ้LjဣཥAGND‫ڟ‬DGND‫૶ڦ‬থᆌ੍ৎ AD7792/AD7793ă ྺ๑ኄၵඁ᳘ᇮॲࣩ݀ഄፌॅႠీLjᆌॽഄ৑੗ీ੍ৎഗ ॲLjፌࡻॽഄ৆ཌྷഗॲăᆌ૧ᆩ0.1 μF༩ٍ‫ۉ‬ඹॽ໯ᆶஇड ႊೌඁ᳘‫ڟ‬DGNDă Rev. B | Page 27 of 32 AD7792/AD7793 ᆌᆩ႑တ! AD7792/AD7793਩ྺ‫ׯگ‬ԨĂߛ‫ݴ‬Ր୲ఇຕገ࣑ഗăఇຕ ገ࣑ࠀీᆯΣ-Δ঳ࠓ༵ࠃLjᅺُഗॲ‫ੇڦ‬ሯీ૰࢔ഽLj‫ݥ‬ ‫׉‬๢ࢇ‫ߌد‬ഗ֪ଉĂ߾ᄽࢅࡗ‫ײ‬੦዆ᆌᆩă ‫ڦ‬ሯำᆖၚă‫ړ‬ᅏ՗‫ٷݣ‬ഗ੗ᆩ้LjAD7792/AD7793‫ࠌڦ‬ ఇ‫ۉ‬უ‫ॽྷݔ‬໫ၭăᅺُLjೋዃ‫ۉ‬უิ‫ׯ‬ഗ੗༵ࠃࠌఇ‫ۉ‬ უLjᅜՍॽඤ‫ۉ‬౾ิ‫ۉڦׯ‬უ‫ڦ‬ፌߛೋუኵ‫ڟٳ‬AVDD/2ă ૧ᆩඤ‫ۉ‬౾֪ଉ࿒‫܈‬ ཚࡗ཮ዐ‫ڦ‬ඤ௺‫ۉ‬ፆీࠕํ၄ូ‫܋‬ց‫׋‬ăೌాघ૤‫ྺୁۉ‬ ޿ඤ௺‫ۉ‬ፆ༵ࠃघ૤ăُྔLjូ‫֪܋‬ଉ‫ڦ‬एጚ‫ۉ‬უઠጲᅃ ߲ᇑ޿ඤ௺‫ۉ‬ፆ‫ڦ૴ز‬৛௢‫ۉ‬ፆăᆯُ੗ํ၄Բ୲๕֪ ଉLjሞُ൧઄ူLjघ૤‫ڦୁۉ‬հ‫ۯ‬փࣷ‫֪ܔ‬ଉׂิᆖၚ(֪ ଉ঳ࡕ๟৛௢֖੊‫ۉ‬ፆኵᇑඤ௺‫ۉ‬ፆኵ‫ڦ‬Բኵ)ă ཮20๟ᅃ߲ඤ‫ۉ‬౾ᇑAD7792/AD7793૶থ‫ڦ‬๖ᅪ཮ăሞඤ ‫ۉ‬౾ᆌᆩዐLjᆯඤ‫ۉ‬౾ׂิ‫ۉڦ‬უ‫֪ڦ‬ଉኵᇑਨ‫ܔ‬एጚ‫ۉ‬ უኵ‫װ‬Բ૩ՎࣅǗᅺُLjాևएጚ‫ۉ‬უ੗ᆩᇀ޿ገ࣑ăូ ‫֪܋‬ଉႴᄲ૧ᆩԲ୲๕ದዃǗᅺُLjႴᄲ૧ᆩྔևएጚ‫ۉ‬ უᇸă ᆯᇀઠጲඤ‫ۉ‬౾‫ڦ‬႑ࡽ࢔ෑLjAD7792/AD7793ాዃᅏ՗‫ݣ‬ ‫ٷ‬ഗॽ‫޿ٷݣ‬႑ࡽăᆯᇀ๼෇ཚ‫ڢ‬ਏᆶ࣐؋ࠀీLj੗ॽ‫ٷ‬ ඁ᳘‫ۉ‬ඹዃᇀമ‫܋‬LjᅜՍᇀၩ‫أ‬੗ీ‫؜‬၄ሞඤ‫ۉ‬౾ᆅগฉ GND AVDD VBIAS REFIN(+) REFIN(–) BAND GAP REFERENCE AIN1(+) AIN1(–) GND AVDD R C AIN2(+) MUX BUF AIN2(–) SERIAL INTERFACE AND CONTROL LOGIC Σ-Δ ADC IN-AMP REFIN(+) RREF GND REFIN(–) AVDD DOUT/RDY DIN SCLK CS DVDD INTERNAL CLOCK AD7792/AD7793 IOUT2 CLK ཮ 20. ૧ᆩAD7792/AD7793৊ႜඤ‫ۉ‬౾֪ଉ Rev. B | Page 28 of 32 04855-012 THERMOCOUPLE JUNCTION R AD7792/AD7793 ૧ᆩRTD֪ଉ࿒‫܈‬ গ໯ᆩ֌ଙत‫܈׊‬਩ᆌ၎ཞDžLjIOUT1ᇑIOUT2೅ದLj RL2‫ڦ‬ဃֶ‫ۉ‬უᇑRL1‫ڦ‬ဃֶ‫ۉ‬უ၎‫ڪ‬Lj൐AIN1(+)ᆅগᇑ AIN1(–)ᆅগኮक़࿮ဃֶ‫ۉ‬უăRL3ฉॽׂิଇԠ‫ۉ‬უLjᆯ ᇀ໯ׂิ‫ۉڦ‬უྺࠌఇ‫ۉ‬უLjᅺُLjփ٪ሞ‫ۉ‬უဃֶă૧ ᆩฉຎ೅ದ‫ୁۉ‬ᇸኮᅃLjᄺ੗ᅜྺAD7792/AD7793༵ࠃए ጚ‫ۉ‬უă໲‫ิׂڦ‬Ⴔᄲᆩ‫ڟ‬ᅃ߲৛௢‫ۉ‬ፆ൐๢ᆩᇀADC‫ڦ‬ ֶ‫ݴ‬एጚ‫ۉ‬უᆅগăኄᅃ‫ݛ‬ӄ੗ᅜඓԍఇె‫ۉ‬უ๼෇‫ྷݔ‬ ߵ਍एጚ‫ۉ‬უ‫װ‬Բ૩Վࣅăएጚ‫ۉ‬უ‫ڦ‬Վࣅ੗ց‫׋‬ඪࢆᅺ घ૤‫ڦୁۉ‬࿒೎ܸ‫ڞ‬ዂ‫ڦ‬ఇె๼෇‫ۉ‬უဃֶă ྺ‫ڟٳ‬ፌॅෙ၍๕RTDದዃLjႴᄲᆩ‫ڟ‬ଇ߲ྜඇ೅ದ‫ۉڦ‬ ୁᇸăAD7792/AD7793ਏԢଇ߲೅ದଆࡻ‫ୁۉڦ‬ᇸLjᅺ ُLj໲‫׉ݥ‬๢ᆩᇀฉຎᆌᆩă཮21၂๖‫؜‬ᅃ߲ෙ၍๕ದ ዃăሞ޿ದዃዐLjසࡕኻ๑ᆩᅃୟ‫ୁۉ‬Ljᆅ၍‫ۉ‬ፆॽׂิ ဃֶLjᆯᇀघ૤‫ୁୁۉ‬ঢ়RL1LjॽሞAIN1(+)ᆅগࢅAIN1 (–)ᆅগኮक़ׂิ‫ۉ‬უဃֶăሞ໯௮ຎ‫ݛڦ‬ӄዐLj‫߲ܾڼ‬ RTD‫ୁۉ‬ᇸᆩᇀց‫׋‬ᅺघ૤‫ୁୁۉ‬ঢ়RL1໯ׂิ‫ڦ‬ဃֶă ඗ࢫLj‫߲ܾڼ‬RTD‫ୁୁۉ‬ঢ়RL2ă्ยRL1ࢅRL2၎‫߳)ڪ‬ᆅ GND AVDD REFIN(+) REFIN(–) BAND GAP REFERENCE IOUT1 RTD RL2 RL3 AIN1(+) GND AVDD AIN1(–) BUF IOUT2 SERIAL INTERFACE AND CONTROL LOGIC Σ- Δ ADC IN-AMP DOUT/RDY DIN SCLK CS REFIN(+) GND RREF REFIN(–) INTERNAL CLOCK AD7792/AD7793 CLK ཮21. ૧ᆩAD7792/AD7793‫ڦ‬RTDᆌᆩ Rev. B | Page 29 of 32 DVDD 04855-013 RL1 AD7792/AD7793 ྔႚ؅٫ 5.10 5.00 4.90 16 9 4.50 4.40 4.30 6.40 BSC 1 8 PIN 1 1.20 MAX 0.15 0.05 0.20 0.09 0.30 0.19 0.65 BSC COPLANARITY 0.10 8° 0° SEATING PLANE 0.75 0.60 0.45 COMPLIANT TO JEDEC STANDARDS MO-153-AB ཮22. 16ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] (RU-16) ؅٫‫ڇ‬࿋ǖmm ۩ࠔኸళ ႙ࡽ! AD7792BRU AD7792BRU-REEL AD7792BRUZ 1 AD7792BRUZ-REEL1 AD7793BRU AD7793BRU-REEL AD7793BRUZ1 AD7793BRUZ-REEL1 EVAL-AD7792EBZ1 EVAL-AD7793EBZ1 1 ࿒‫!ྷݔ܈‬ –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C –40°C዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C ‫ހ‬ጎ௮ຎ! 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ 16ᆅগTSSOP‫ހ‬ጎ ೠࠚӱ ೠࠚӱ Z = ‫ࢇޙ‬RoHSՔጚ‫ڦ‬ग़ඹഗॲă Rev. B | Page 30 of 32 ‫ހ‬ጎ჋ၜ!! RU-16 RU-16 RU-16 RU-16 RU-16 RU-16 RU-16 RU-16 AD7792/AD7793 ጀ๥ Rev. B | Page 31 of 32 AD7792/AD7793 ጀ๥ ©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04855-0-3/07(B) Rev. B | Page 32 of 32