AD7793BRUZ-REEL

厂商：
AD(亚德诺)
封装：
TSSOP16_5X4.4MM
描述：
3通道、低噪声、低功耗、16/24位ΣADC内置片内仪表放大器和基准电压源

数据手册：

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数据手册
价格&库存

AD7793BRUZ-REEL 数据手册

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. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved. 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

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