AD7794BRUZ

厂商：
AD(亚德诺)
封装：
TSSOP24_7.8X4.4MM
描述：
6通道、低噪声、低功率、24位∑-ΔADC，带片内放大器和参考

数据手册：

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数据手册
价格&库存

AD7794BRUZ 数据手册

6ཚ‫ڢ‬Ă‫گ‬ሯำĂ‫ࡼࠀگ‬24/16࿋∑-Δ႙ ADCǈాዃೌాᅏ՗‫ٷݣ‬ഗࢅएጚ‫ۉ‬უᇸ AD7794/AD7795 ༬Ⴀ ‫ۉ‬ጱ‫׹‬ ᆌՎቆ‫ߌد‬ഗ ഘ༹‫ݴ‬ဆ ߾ᄽࡗ‫ײ‬੦዆ ᅏഗᅏ՗ ეᅂ‫ݴ‬ဆ ዇ీ݀พऐ ᅂ၎/ഘ၎෥೷ᅏ 6࿋DVM ፌߛ23࿋ᆶၳ‫ݴ‬Ր୲ ਩‫(ߵݛ‬RMS)ሯำǖ40 nV(4.17 Hz้)ǈ85 nV(16.7 Hz้) ‫ୁۉ‬ǖ400 μA(‫ۆ‬႙ኵ) ู‫ۉ‬ఇ๕ǖፌ‫ٷ‬1 μA ‫گ‬ሯำ੗Պ‫ײ‬ሺᅮᅏ՗‫ٷݣ‬ഗ ‫ټ‬ဤएጚ‫ۉ‬უᇸǈ‫ۆ‬႙࿒೏ኵྺ4 ppm/°C ߸ႎ໏୲ǖ4.17 Hz዁470 Hz 6ୟֶ‫ݴ‬ఇె๼෇ ాև้ዓና‫ږ‬ഗ 50 Hz/60 Hzཞ้ᅞ዆ एጚ‫ۉ‬უॠ֪ ੗Պ‫ୁۉײ‬ᇸ ೌాೋዃ‫ۉ‬უ݀ิഗ භ܏‫ୁۉ‬੦዆ ‫ۉ܋گ‬ᇸਸ࠲ ‫ۉ‬ᇸ‫ۉ‬უǖ2.7 V዁5.25 V ࿒‫ྷݔ܈‬ǖ Bपǖ–40°C዁+105°C Cपǖ–40°C዁+125°C ‫܀‬૬থ੨‫ۉ‬ᇸ 24ᆅগTSSOP‫ހ‬ጎ ෙ၍๕‫ز‬ႜথ੨ SPI®ĂQSPI™ĂMICROWIRE™ĂDSPग़ඹ SCLKฉྺแ௢༬‫݀ة‬ഗ ߁ຎ! AD7794/AD7795਩ྺ๢ࢇߛ৛‫֪܈‬ଉᆌᆩ‫ࡼࠀگڦ‬Ă‫گ‬ሯ ำĂྜኝఇెമ‫܋‬ǈాዃᅃ߲‫گ‬ሯำ24࿋/16࿋‫ڦ‬6ୟֶ‫ݴ‬ ๼෇‫ڦ‬Σ-Δ ADCǗ࣏ण‫ׯ‬କೌా‫گ‬ሯำᅏ՗‫ٷݣ‬ഗǈᅺܸ ੗኱থ๼෇ၭ႑ࡽ‫ڟ‬ADCă ௅੼ഗॲ਩ాዃᅃ߲৛௢‫گ‬ሯำĂ‫گ‬࿒೏ాև‫ټ‬ဤएጚ‫ۉ‬ უᇸǈᄺ੗֑ᆩፌ‫ܠ‬ଇ߲ྔևֶ‫ݴ‬एጚ‫ۉ‬უăഄ໲ೌా༬ ႠԈઔ੗Պ‫ײ‬घ૤‫ୁۉ‬ᇸĂභ܏‫ୁۉ‬੦዆ࢅೋዃ‫ۉ‬უׂิ ഗǈ૧ᆩೋዃ‫ۉ‬უׂิഗ੗ॽగᅃཚ‫ࠌڦڢ‬ఇ‫ۉ‬უยዃྺ AVDD/2ă‫ۉ܋گ‬ᇸਸ࠲੗ᆩઠሞଇْገ࣑ኮक़࠲܏ൃ๕‫د‬ ߌഗǈܸٗ๑ဣཥࠀࡼই዁ፌ‫گ‬ăAD7794/AD7795੗ᅜ֑ ᆩాև้ዓईྔև้ዓ߾ፕǈ๼‫؜‬ຕ਍໏୲੗ሞ4.17 Hz዁ 470 Hz‫ాྷݔڦ‬Վࣅă ଇ੼ഗॲ਩֑ᆩ2.7 V዁5.25 V‫ۉ‬ᇸࠃ‫ۉ‬ăBपഗॲ(AD7794 ࢅAD7795)‫ۨܮڦ‬࿒‫ྺྷݔ܈‬−40°C዁+105°CǈܸCपഗॲ (AD7794)‫ۨܮڦ‬࿒‫ྺྷݔ܈‬−40°C዁+125°Căኄၵഗॲ‫ڦ‬ ‫ۆ‬႙ࠀࡼྺ 400 μAǈ֑ᆩ24ᆅগTSSOP‫ހ‬ጎă ᆌᆩ ࿒‫֪܈‬ଉ უ૰֪ଉ ࠀీ઀཮ GND AVDD AIN4(+)/REFIN2(+) REFIN1(+) AIN4(–)/REFIN2(–) REFIN1(–) VBIAS VDD AIN1(+) AIN1(–) AIN2(+) AIN2(–) AIN3(+) AIN3(–) AIN5(+)/IOUT2 AIN5(–)/IOUT1 AIN6(+)/P1 AIN6(–)/P2 REFERENCE DETECT BAND GAP REFERENCE GND BUF Σ-Δ ADC IN-AMP MUX SERIAL INTERFACE AND LOGIC CONTROL DOUT/RDY DIN SCLK CS GND TEMP SENSOR INTERNAL CLOCK DVDD AD7794/AD7795 VDD PSW GND CLK Rev. D 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. 04854-001 AD7794: 24-BIT ADC AD7795: 16-BIT ADC ཮1 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 AD7794/AD7795 ణ୤ ༬Ⴀ ................................................................................................... 1 ! ᆌᆩ ................................................................................................... 1 ADC‫ۉ‬ୟ႑တ ............................................................................... 26 ஢ଉ‫ײ‬स٪ഗ ....................................................................... 25 ߁ຎ ................................................................................................... 1 ! ߁ຎ ......................................................................................... 26 ࠀీ઀཮ ........................................................................................... 1 ! ຕጴথ੨ ................................................................................ 28 Ⴊ۩૦๏ ........................................................................................... 2 ‫ۉ‬ୟ௮ຎ ........................................................................................ 31 रຍࡀ߭ ........................................................................................... 3 ! ้Ⴞ༬Ⴀ ........................................................................................... 8 ఇె๼෇ཚ‫ ڢ‬....................................................................... 31 ᅏ՗‫ٷݣ‬ഗ ............................................................................ 31 ้Ⴞ཮ ............................................................................................... 9 ! ມटႠ/‫ڇ‬टႠದዃ ............................................................. 31 ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ........................................................................... 10 ! ຕ਍๼‫؜‬Պஓ ....................................................................... 32 භ܏‫ ୁۉ‬................................................................................ 32 ESDয়ߢ ................................................................................. 10 ᆅগದዃࢅࠀీ௮ຎ ................................................................... 11 घ૤‫ ୁۉ‬................................................................................ 32 ਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀ .......................................................... 13 ! ೋዃ‫ۉ‬უ݀ิഗ ................................................................... 32 ! ቘհ๑ీ ................................................................................ 13 ! एጚ‫ۉ‬უ ................................................................................ 32 ! ቘհ্ᆩ ................................................................................ 15 ! एጚ‫ۉ‬უॠ֪ ....................................................................... 33 ‫ۆ‬႙߾ፕ༬Ⴀ ................................................................................ 16 ! ް࿋ ......................................................................................... 33 ೌాस٪ഗ .................................................................................... 17 ! AVDD॔੦ഗ .......................................................................... 33 ! ཚ႑स٪ഗ ............................................................................ 17 ! ၯጚ ......................................................................................... 33 ! ጒༀस٪ഗ ............................................................................ 18 ! থ‫ࢅں‬քਆ ............................................................................ 34 ! ఇ๕स٪ഗ ............................................................................ 19 ᆌᆩ႑တ ........................................................................................ 35 ! ದዃस٪ഗ ............................................................................ 22 ! ! ຕ਍स٪ഗ ............................................................................ 24 ྔႚ؅٫ ........................................................................................ 36 IDस٪ഗ ................................................................................ 24 ! ୁଉऺ .................................................................................... 35 ۩ࠔኸళ ................................................................................ 36 IOस٪ഗ ................................................................................ 24 ! ฿ۙस٪ഗ ............................................................................ 25 Ⴊ۩૦๏ 2007౎3ሆ—Ⴊ۩ӲC዁Ⴊ۩ӲD 　　　　　　　　　　　 2005౎4ሆ—Ⴊ۩Ӳ0዁Ⴊ۩ӲA 　　　　　　　　　　　 ߸߀रຍࡀ߭࿂ጀ1 ....................................................................... 7 ߸߀ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ..................................................................... 9 ߸߀ጒༀस٪ഗև‫ ݴ‬................................................................... 18 ߸߀཮21 ......................................................................................... 25 ߸߀۩ࠔኸళ ................................................................................ 36 ߸߀ຕ਍๼‫؜‬Պஓև‫ ݴ‬.............................................................. 28 2006౎10ሆ—Ⴊ۩ӲB዁Ⴊ۩ӲC 　　　　　　　　　　　 ߸߀ၯጚև‫ ݴ‬................................................................................ 30 ߭๕߸ႎ .................................................................................... ཚᆩ ߸߀۩ࠔኸళ ................................................................................ 33 ሺेAD7794 Cपഗॲ ............................................................. ཚᆩ 2004౎10ሆ—Ⴊ۩Ӳ0ǖ‫؛‬๔Ӳ ߸߀रຍࡀ߭ .................................................................................. 3 ߸߀۩ࠔኸళ ................................................................................ 36 2006౎6ሆ—Ⴊ۩ӲA዁Ⴊ۩ӲB ሺेAD7795 .............................................................................. ཚᆩ ߸߀༬Ⴀ ........................................................................................... 1 ߸߀՗1 ............................................................................................. 3 ߸߀਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀև‫ ݴ‬........................................ 12 ߸߀՗19 ......................................................................................... 20 ߸߀ADC‫ۉ‬ୟ႑တև‫ ݴ‬.............................................................. 25 ߸߀۩ࠔኸళ ................................................................................ 35 Rev. D | Page 2 of 36 AD7794/AD7795 रຍࡀ߭ ‫ݥأ‬ଷᆶຫ௽ǈAVDD = 2.7 V዁5.25 VǈDVDD = 2.7 V዁5.25 VǈGND = 0 Vǈ໯ᆶࡀ߭਩၎‫ܔ‬ᇀTMIN዁TMAXܸჾă ՗1 ֖ຕ1 ቘհ๑ీ ๼‫߸؜‬ႎ໏୲ ࿮฿ஓ2 AD7794 AD7795 ‫ݴ‬Ր୲ ਩‫ߵݛ‬ሯำᇑ߸ႎ໏୲ ओ‫ݥݴ‬၍Ⴀ ฿ۙဃֶ3 3 ฿ۙဃֶ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ஢ଉ‫ײ‬ဃֶ3, 5 ሺᅮ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ‫ۉ‬ᇸᅞ዆ ఇె๼෇ ֶ‫ݴ‬๼෇‫ۉ‬უ‫ྷݔ‬ AIN‫ۉ‬უਨ‫ܔ‬၌ኵ2 ࿮࣐؋ఇ๕ ࣐؋ఇ๕ ᅏ՗‫ٷݣ‬ഗᆶၳ ࠌఇ‫ۉ‬უVCM ఇె๼෇‫ୁۉ‬ ࣐؋ఇ๕ईᅏ՗‫ٷݣ‬ഗᆶၳ Active ೝ਩๼෇‫ୁۉ‬2 AD7794B/AD7795B AD7794C ೝ਩๼෇‫ୁۉ‬࿒೏ ࿮࣐؋ఇ๕ ೝ਩๼෇‫ୁۉ‬ ೝ਩๼෇‫ୁۉ‬࿒೏ ‫׉‬ఇᅞ዆2, 6 ాև้ዓ @ 50 Hz, 60 Hz @ 50 Hz @ 60 Hz ྔև้ዓ @ 50 Hz, 60 Hz @ 50 Hz @ 60 Hz AD7794/AD7795 ‫ڇ‬࿋ ֪๬ཉॲ/ጀ๥ 4.17 ዁ 470 HzǈՔ‫׬‬ኵ ॺ૬้क़ = 2/๼‫߸؜‬ႎ໏୲ 24 16 ࿋ǈፌၭኵ ࿋ǈፌၭኵ fADC ≤ 242 Hz ֖९਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀև‫ݴ‬ ֖९਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀև‫ݴ‬ ±1 ±10 ±10 ±1 ±3 100 ஢ଉ‫ڦྷݔײ‬ӥྤ ‫(୲ݴ‬ppm)ǈፌ‫ٷ‬ኵ μVǈ‫ۆ‬႙ኵ nV/°Cǈ‫ۆ‬႙ኵ μVǈ‫ۆ‬႙ኵ ppm/°Cǈ‫ۆ‬႙ኵ ሺᅮ = 1዁16ǈྔևएጚ‫ۉ‬უ ppm/°Cǈ‫ۆ‬႙ኵ ሺᅮ = 32዁128ǈྔևएጚ‫ۉ‬უ dBǈፌၭኵ AIN = 1 V/ሺᅮǈሺᅮ ≥ 4ǈྔևएጚ‫ۉ‬უ ±VREF/ሺᅮ VǈՔ‫׬‬ኵ 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 Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ ሺᅮ = 1ई2 ±1 ±250 ±1 ±3 ±2 ±3 ±2 nAǈፌ‫ٷ‬ኵ pAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ pA/°Cǈ‫ۆ‬႙ኵ ±400 ±50 ሺᅮ = 1ई2 nA/Vǈ‫ۆ‬႙ኵ ๼෇‫ୁۉ‬ໜ๼෇‫ۉ‬უܸՎࣅ pA/V/°Cǈ‫ۆ‬႙ኵ 65 80 90 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ ‫ۆ‬႙ኵ80 dBǈ50±1 Hzǈ60±1 HzǈFS[3:0]=1010 ‫ۆ‬႙ኵ90 dBǈ50 ± 1 HzǈFS[3:0] = 1001 ‫ۆ‬႙ኵ100 dBǈ60 ± 1 HzǈFS[3:0] = 1000 80 94 90 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ ‫ۆ‬႙ኵ90 dBǈ50±1 Hzǈ60±1 HzǈFS[3:0]=1010 ‫ۆ‬႙ኵ100 dBǈ50 ± 1 HzǈFS[3:0] = 1001 ‫ۆ‬႙ኵ100 dBǈ60 ± 1 HzǈFS[3:0] = 1000 ±15 Rev. D | Page 3 of 36 ሺᅮ = 1ई2 ሺᅮ = 4዁128 VCM = (AIN(+) + AIN(−))/2, ሺᅮ=4዁128 ሺᅮ= 1ई2ǈ߸ႎ໏୲ < 100 Hz ሺᅮ= 4዁128ǈ߸ႎ໏୲ < 100 Hz AIN6(+)/AIN6(−) ሺᅮ= 1ई2ǈ߸ႎ໏୲ < 100 Hz ሺᅮ= 4዁128ǈ߸ႎ໏୲ < 100 Hz AIN6(+)/AIN6(−) AD7794/AD7795 ֖ຕ1 ࠌఇᅞ዆ AD7794B/AD7795B @ DC @ 50 Hz, 60 Hz2 @ 50 Hz, 60 Hz2 AD7794C @ DC @ 50 Hz, 60 Hz2 @ 50 Hz, 60 Hz2 ቘհ্ᆩ ๼‫߸؜‬ႎ໏୲ ࿮฿ஓ2 AD7794 AD7795 ‫ݴ‬Ր୲ ਩‫ߵݛ‬ሯำᇑ߸ႎ໏୲ ओ‫ݥݴ‬၍Ⴀ ฿ۙဃֶ3 ฿ۙဃֶ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ஢ଉ‫ײ‬ဃֶ3, 5 3, 5 ሺᅮ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4 ‫ۉ‬ᇸᅞ዆ ఇె๼෇ ֶ‫ݴ‬๼෇‫ۉ‬უ‫ྷݔ‬ AIN‫ۉ‬უਨ‫ܔ‬၌ኵ2 ࿮࣐؋ఇ๕ ࣐؋ఇ๕ ᅏ՗‫ٷݣ‬ഗᆶၳ ࠌఇ‫ۉ‬უVCM AD7794/AD7795 ‫ڇ‬࿋! ֪๬ཉॲ/ጀ๥ 100 100 100 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ AIN = 1 V/ሺᅮǈሺᅮ ≥ 4 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 1010 50 ± 1 Hz, FS[3:0] = 1001; 60 ± 1 Hz, FS[3:0] = 1000 97 97 97 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ AIN = 1 V/ሺᅮǈሺᅮ ≥ 4 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 1010 50 ± 1 Hz, FS[3:0] = 1001; 60 ± 1 Hz, FS[3:0] = 1000 4.17 ዁ 470 HzǈՔ‫׬‬ኵ ॺ૬้क़ = 1/๼‫߸؜‬ႎ໏୲ 24 16 ࿋ǈፌၭኵ ࿋ǈፌၭኵ fADC ≤ 123 Hz ֖९਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀև‫ݴ‬ ֖९਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀև‫ݴ‬ ±100/ሺᅮ ±100/ሺᅮ 10 ±10 ±1 ±3 100 ஢ଉ‫ڦྷݔײ‬ӥྤ ‫(୲ݴ‬ppm)ǈፌ‫ٷ‬ኵ μVǈ‫ۆ‬႙ኵ nV/°Cǈ‫ۆ‬႙ኵ nV/°Cǈ‫ۆ‬႙ኵ μVǈ‫ۆ‬႙ኵ ppm/°Cǈ‫ۆ‬႙ኵ ppm/°Cǈ‫ۆ‬႙ኵ dBǈ‫ۆ‬႙ኵ ±VREF/ሺᅮ VǈՔ‫׬‬ኵ VREF = REFIN(+) − REFIN(−), ईాևएጚ‫ۉ‬უǈ ሺᅮ = 1዁128 GND − 30 mV AVDD + 30 mV GND + 100 mV AVDD − 100 mV GND + 300 mV AVDD − 1.1 0.2 + (ሺᅮ/2 × (AIN(+) − AIN(−))) AVDD − 0.2 − (ሺᅮ/2 × (AIN(+) − AIN(−))) Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ ሺᅮ = 1ई2 ±1 ±250 ±1 ±3 ±2 ±3 ±2 nAǈፌ‫ٷ‬ኵ pAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ nAǈፌ‫ٷ‬ኵ pA/°Cǈ‫ۆ‬႙ኵ ±400 ±50 ሺᅮ = 1ई2 nA/Vǈ‫ۆ‬႙ኵ ๼෇‫ୁۉ‬ໜ๼෇‫ۉ‬უܸՎࣅ pA/V/°Cǈ‫ۆ‬႙ኵ ±15 ࿮ၯጚ ሺᅮ = 1዁16 ሺᅮ = 32዁128 ሺᅮ = 1዁16ǈྔևएጚ‫ۉ‬უ ሺᅮ = 32዁128ǈྔևएጚ‫ۉ‬უ AIN = 1 V/ሺᅮǈሺᅮ ≥ 4ǈྔևएጚ‫ۉ‬უ ሺᅮ = 1ई2 ሺᅮ = 4዁128 AMP − CM = 1, VCM = (AIN(+) + AIN(–))/2, ሺᅮ = 4 ዁ 128 Vǈፌ‫ٷ‬ኵ ఇె๼෇‫ୁۉ‬ ࣐؋ఇ๕ईᅏ՗‫ٷݣ‬ഗᆶၳ ೝ਩๼෇‫ୁۉ‬2 AD7794B/AD7795B AD7794C ೝ਩๼෇‫ୁۉ‬೏ᅎ ࿮࣐؋ఇ๕ ೝ਩๼෇‫ୁۉ‬ ೝ਩๼෇‫ୁۉ‬೏ᅎ Rev. D | Page 4 of 36 ሺᅮ = 1ई2 ሺᅮ = 4዁128 AIN6(+)/AIN6(−) ሺᅮ = 1ई2 ሺᅮ = 4዁128 AIN6(+)/AIN6(−) AD7794/AD7795 ֖ຕ1 ‫׉‬ఇᅞ዆2, 6 ాև้ዓ @ 50 Hz, 60 Hz @ 50 Hz @ 60 Hz ྔև้ዓ @ 50 Hz, 60 Hz @ 50 Hz @ 60 Hz ࠌఇᅞ዆ AD7794B/AD7795B @ DC @ 50 Hz, 60 Hz2 @ 50 Hz, 60 Hz2 AD7794C @ DC @ 50 Hz, 60 Hz2 @ 50 Hz, 60 Hz2 ቘհ๑ీई্ᆩ एጚ‫ۉ‬უ๼෇ ాևएጚ‫ۉ‬უ ాևएጚ‫ۉ‬უ‫؛‬๔৛‫܈‬ AD7794/AD7795 ‫ڇ‬࿋! 60 78 86 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ ‫ۆ‬႙ኵ70 dBǈ50±1 Hzǈ60±1 HzǈFS[3:0]=1010 ‫ۆ‬႙ኵ90 dBǈ50 ± 1 HzǈFS[3:0] = 1001 ‫ۆ‬႙ኵ100 dBǈ60 ± 1 HzǈFS[3:0] = 1000 60 94 90 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ ‫ۆ‬႙ኵ70 dBǈ50±1 Hzǈ60±1 HzǈFS[3:0]=1010 ‫ۆ‬႙ኵ100 dBǈ50 ± 1 HzǈFS[3:0] = 1001 ‫ۆ‬႙ኵ100 dBǈ60 ± 1 HzǈFS[3:0] = 1000 100 100 100 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ AIN = 1 V/ሺᅮǈሺᅮ = 4ǈAMP-CM Bit = 1 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 1010 50 ± 1 Hz, FS[3:0] = 1001; 60 ± 1 Hz, FS[3:0] = 1000 97 97 97 dBǈፌၭኵ dBǈፌၭኵ dBǈፌၭኵ AIN = 1 V/ሺᅮǈሺᅮ = 4ǈAMP-CM Bit = 1 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 1010 50 ± 1 Hz, FS[3:0] = 1001; 60 ± 1 Hz, FS[3:0] = 1000 1.17 ± 0.01% 4 15 85 Vǈፌၭኵ AVDD = 4 V, TA = 25°C /ፌ‫ٷ‬ኵ ppm/°Cǈ‫ۆ‬႙ኵ ppm/°Cǈፌ‫ٷ‬ኵ dBǈ‫ۆ‬႙ኵ 2.5 0.1 AVDD VǈՔ‫׬‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ ೝ਩एጚ๼෇‫ୁۉ‬ GND − 30 mV AVDD + 30 mV 400 Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ nA/Vǈ‫ۆ‬႙ኵ ೝ਩एጚ๼෇‫ୁۉ‬೏ᅎ ±0.03 nA/V/°Cǈ‫ۆ‬႙ኵ 100 0.3 0.65 dBǈ‫ۆ‬႙ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ 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 ాևएጚ‫ۉ‬უ೏ᅎ2 ‫ۉ‬ᇸᅞ዆ ྔևएጚ‫ۉ‬უ ྔևREFIN‫ۉ‬უ एጚ‫ۉ‬უ‫ྷݔ‬2 REFIN‫ۉ‬უਨ‫ܔ‬၌ኵ2 ‫׉‬ఇᅞ዆2 ࠌఇᅞ዆ एጚ‫ۉ‬უॠ֪‫ۉ‬ೝ घ૤‫ୁۉ‬ᇸ (IEXC1 ࢅ IEXC2) ๼‫ୁۉ؜‬ ‫؛‬๔ඹֶ(25°C) ೏ᅎ ‫ୁۉ‬೅ದ ೏ᅎ೅ದ ‫ۉ‬უۙኝ୲(AVDD) DD) ޶ሜۙኝ୲ ๼‫ۉ؜‬ᇸ‫ۉ‬უ !!!!!!!!֪๬ཉॲ/ጀ๥ REFIN = REFIN(+) − REFIN(−) ‫ړ‬VREF = AVDD้ǈසࡕᅏ՗‫ٷݣ‬ഗᆶၳǈ ሶֶ‫ݴ‬๼෇ՂႷ၌዆ሞ0.9×VREF/ሺᅮᅜా ᇑఇె๼෇၎ཞ Rev. D | Page 5 of 36 VREF < 0.3 V้NOXREF࿋ᆶၳ IEXC1ᇑIEXC2‫ڦ‬೅ದǈVOUT = 0 V AVDD = 5 V ± 5% ‫ୁۉ‬ᇸยዃྺ10 μAई210 μA ‫ୁۉ‬ᇸยዃྺ1 mA AD7794/AD7795 ֖ຕ1 ೋዃ‫ۉ‬უ݀ิഗ VBIAS VBIAS ݀ิഗഔ‫้ۯ‬क़ ࿒‫ߌد܈‬ഗ ৛‫܈‬ ଳ௺‫܈‬ ‫ۉ܋گ‬ᇸਸ࠲ RON ඹႹ‫ୁۉ‬2 ຕጴ๼‫؜‬ǄP1ࢅP2ǅ VOH, ๼‫ۉߛ؜‬უ2 VOL, ๼‫ۉگ؜‬უ2 VOH, ๼‫ۉߛ؜‬უ2 VOL, ๼‫ۉگ؜‬უ2 ాև/ྔև้ዓ ాև้ዓ ೕ୲2 ቞੣Բ ྔև้ዓ ೕ୲ ቞੣Բ இड๼෇ CS2 VINL, ๼෇‫ۉگ‬უ VINH, ๼෇ߛ‫ۉ‬უ SCLK)แ௢༬‫݀ة‬ഗ๼෇*Ă CLKࢅDIN2 AD7794B/AD7795B VT(+) VT(−) VT(+) ዁ V T(−) VT(+) VT(−) VT(+) ዁ V T(−) AD7794C VT(+) VT(−) VT(+) to VT(−) VT(+) VT(−) VT(+) ዁ V T(−) ๼෇‫ୁۉ‬ ๼෇‫ۉ‬ඹ AD7794/AD7795 ‫ڇ‬࿋ ֪๬ཉॲ/ጀ๥ AVDD/2 VǈՔ‫׬‬ኵ ms/nFǈ‫ۆ‬႙ኵ ൽਦᇀAIN໯૶‫ۉڦ‬ඹǗ֖९཮11 ±2 0.81 °Cǈ‫ۆ‬႙ኵ mV/°Cǈ‫ۆ‬႙ኵ ኍ‫ܔ‬ᆩࢽၯጚ࿒‫ߌد܈‬ഗ‫ڦ‬൧઄ 7 9 30 Ωǈፌ‫ٷ‬ኵ Ωǈፌ‫ٷ‬ኵ mAǈፌ‫ٷ‬ኵ AVDD = 5 V AVDD = 3 V ૶Ⴤ‫ୁۉ‬ AVDD − 0.6 0.4 4 0.4 Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ AVDD = 3 V, ISOURCE = 100 μA AVDD = 3 V, ISINK = 100 μA AVDD = 5 V, ISOURCE = 200 μA AVDD = 5 V, ISINK = 800 μA 64 ± 3% 50:50 kHzǈፌၭኵ/ፌ‫ٷ‬ኵ min/max %ǈ‫ۆ‬႙ኵ 64 kHzǈՔ‫׬‬ኵ 45:55 to 55:45 %ǈ‫ۆ‬႙ኵ 0.8 0.4 2.0 Vǈፌ‫ٷ‬ኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ DVDD = 5 V DVDD = 3 V DVDD = 3 V ई 5 V 1.4/2 0.8/1.7 0.1/0.17 0.9/2 0.4/1.35 0.06/0.13 Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ DVDD = 5 V DVDD = 5 V DVDD = 5 V DVDD = 3 V DVDD = 3 V DVDD = 3 V 1.35/2.05 0.8/1.9 0.1/0.19 0.9/2 0.4/1.35 0.06/0.15 ±10 10 Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ Vǈፌၭኵ/ፌ‫ٷ‬ኵ μAǈፌ‫ٷ‬ኵ pFǈ‫ۆ‬႙ኵ DVDD = 5 V DVDD = 5 V DVDD = 5 V DVDD = 3 V DVDD = 3 V DVDD = 3 V VIN = DVDD ई GND ໯ᆶຕጴ๼෇ Rev. D | Page 6 of 36 ๑ᆩ2‫ݴ‬ೕࠀీ้)࿋CLK1 = CLK0 = 1*ǈ੗ᅜ ֑ᆩ128 kHzྔև้ዓ ๢ᆩᇀ64 kHzྔև้ዓǗසࡕ๟128 kHz้ዓǈ ቞੣Բᄲ൱੗ᅜฎ‫گ‬ AD7794/AD7795 ֖ຕ1 இड๼‫؜‬ǄԈઔCLKǅ VOH, ๼‫ۉߛ؜‬უ2 VOL, ๼‫ۉگ؜‬უ2 VOH, ๼‫ۉߛ؜‬უ2 VOL, ๼‫ۉگ؜‬უ2 ‫ޝ‬੣ༀႅ୑‫ୁۉ‬ ‫ޝ‬੣ༀ๼‫ۉ؜‬ඹ ຕ਍๼‫؜‬Պஓ ဣཥၯጚ2 ஢ଉ‫ײ‬ၯጚ၌ኵ ଭ‫ۉ‬ೝၯጚ၌ኵ ๼෇‫ྷݔ‬ AD7794/AD7795 ‫ڇ‬࿋ DVDD − 0.6 0.4 4 0.4 ±10 10 ೋᅎܾ৊዆ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ μAǈፌ‫ٷ‬ኵ pFǈ‫ۆ‬႙ኵ 1.05 × FS −1.05 × FS 0.8 × FS 2.1 × FS Vǈፌ‫ٷ‬ኵ Vǈፌၭኵ Vǈፌၭኵ Vǈፌ‫ٷ‬ኵ ‫ۉ‬ᇸᄲ൱7 ‫ۉ‬ᇸ‫ۉ‬უ AVDD ዁ GND 2.7/5.25 DVDD ዁ GND 2.7/5.25 Vǈፌၭኵ /ፌ‫ٷ‬ኵ Vǈፌၭኵ /ፌ‫ٷ‬ኵ ‫ۉ‬ᇸ‫ୁۉ‬ IDD‫ୁۉ‬ IDD)ู‫ۉ‬ఇ๕* 1 140 μAǈፌ‫ٷ‬ኵ 185 μAǈፌ‫ٷ‬ኵ 400 μAǈፌ‫ٷ‬ኵ 500 μAǈፌ‫ٷ‬ኵ 1 2 μAǈፌ‫ٷ‬ኵ μAǈፌ‫ٷ‬ኵ ֪๬ཉॲ/ጀ๥ 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) ‫ۆ‬႙ኵ110 μA (AVDD = 3 V)ǈ‫ۆ‬႙ኵ125 μA (AVDD = 5 V)ǈ ࿮࣐؋ఇ๕ǈྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ130 μA (AVDD = 3 V)ǈ‫ۆ‬႙ኵ165 μA (AVDD = 5 V)ǈ ࣐؋ఇ๕ǈሺᅮ = 1ई2ǈྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ300 μA (AVDD = 3 V)ǈ‫ۆ‬႙ኵ350 μA (AVDD = 5 V)ǈ ሺᅮ = 4዁128ǈྔևएጚ‫ۉ‬უ ‫ۆ‬႙ኵ400 μA (AVDD = 3 V)ǈ‫ۆ‬႙ኵ450 μA (AVDD = 5 V)ǈ ሺᅮ = 4዁128ǈాևएጚ‫ۉ‬უ AD7794B, AD7795B AD7794C ࿒‫ྷݔ܈‬ǖ−40°C዁+105°C)Bप*ǈ−40°C዁+125°C)Cप*ă߸ႎ໏୲ྺ19.6 Hzࢅ39.2 Hz้ǈසࡕAIN(+)ईAIN(−)ᆅগฉ‫ۉڦ‬უ‫ۆ‬႙ኵ‫ࡗג‬AVDD – 1.6 Vǈሶ! ! INLĂ‫ۉ‬ᇸᅞ዆(PSR)Ăࠌఇᅞ዆(CMR)ࢅ‫׉‬ఇᅞ዆(NMR)փ‫ࢇޙ‬ຕ਍๮֩रຍࡀ߭ăُྔǈቘհ্ᆩ้ǈኄၵ߸ႎ໏୲ူ‫ڦ‬฿ۙဃֶࢅ฿ۙဃֶ೏ᅎႠీࣷ! ! ူইăਉ૩ܸჾǈ‫ۉُࡗג‬უ้ǈINL‫ۆ‬႙ኵই዁஢ଉ‫ڦײ‬18 ppmǈPSR‫ۆ‬႙ኵই዁69 dBăᅺُǈྺԍኤኄၵ߸ႎ໏୲ူ‫ڦ‬Ⴀీǈఇె๼෇ᆅগฉ‫ڦ‬ਨ‫!ܔ‬ ! ‫!ۉ‬უՂႷ‫گ‬ᇀAVDD − 1.6 Vă 2 रຍࡀ߭࿄ঢ়ิׂ֪๬ǈ‫ڍ‬๴ׂ೗‫؛‬๔݀ք้‫ڦ‬༬Ⴀຕ਍ኧ‫׼‬ă 3 ၯጚኮࢫǈُဃֶᇑ჋ۨ‫ڦ‬Պ‫ײ‬ሺᅮࢅ߸ႎ໏୲໯‫ܔ‬ᆌ‫ڦ‬ሯำ၎‫ړ‬ă 4 ሞඪᅪ࿒‫ူ܈‬ዘႎၯጚॽၩ‫أ‬ኄၵဃֶă 5 ஢ଉ‫ײ‬ဃֶ๢ᆩᇀኟ޶ଇዖ஢ଉ‫ײ‬ǈժሞ߾‫׍‬ၯጚཉॲူ๢ᆩǄAVDD = 4 Vǈሺᅮ = 1ǈTA = 25°Cǅă 6 FS[3:0]ྺఇ๕स٪ഗዐᆩઠ჋ስ๼‫؜‬ጴ໏୲‫຺ڦ‬࿋ă 7 ্ᆩघ૤‫ࢅୁۉ‬ೋዃ‫ۉ‬უ݀ิഗ้ǈຕጴ๼෇‫ڪ‬ᇀDVDDईGNDă Rev. D | Page 7 of 36 AD7794/AD7795 ้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 TMINĂTMAX้‫ڦ‬၌ኵ(Bप) 100 100 ‫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) CS ူইᄂ‫ڟ‬DOUT/ 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) CS ူইᄂ‫ڟ‬SCLKᆶၳᄂยዃ้क़4 ຕ਍ᆶၳ‫ڟ‬SCLKᄂยዃ้क़ ຕ਍ᆶၳ‫ڟ‬SCLKᄂԍ‫้׼‬क़ CS ฉืᄂ‫ڟ‬SCLKᄂԍ‫้׼‬क़ SCLK࿮ၳᄂ‫ ڟ‬CS ࿮ၳᄂ SCLK࿮ၳᄂ‫ڟ‬DOUT/ RDY ߛ‫ۉ‬ೝ 1 ᄣೌሞ‫ْ݀؛‬ք೺क़਩ঢ়ࡗ֪๬ǈᅜඓԍ‫ࢇޙ‬Քጚᄲ൱ă໯ᆶ๼෇႑ࡽ਩ኸۨtR = tF = 5 nsǄ10%‫ڟ‬90%‫ڦ‬DVDDǅǈժٗ1.6 V‫ۉ‬ೝഐਸ๔ऺ้ă 2 ֖९཮3ࢅ཮4ă 3 ኄၵຕኵ๟֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ‫֪ڦ‬ଉ঳ࡕǈۨᅭྺ๼‫ੵ؜‬ሁVOLईVOH၌ኵ໯Ⴔ‫้ڦ‬क़ă 4 SCLKᆶၳᄂྺSCLK‫ူڦ‬ইᄂă 5 ኄၵຕኵઠᇸᇀ֪ଉ้क़ǈ޿้क़ྺ֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ้ຕ਍๼‫߀؜‬Վ0.5 V໯Ⴔ‫้ڦ‬क़ă඗ࢫॽ֪‫ڦڥ‬ຕኵ‫ݒ‬ၠྔླྀǈᅜၩ‫أ‬50 pF‫ۉ‬ඹ‫ڦ‬؊‫ۉ‬ई‫!ۉݣ‬ ! ၳᆌăኄᅪ࿆ጣǈ้Ⴞ༬Ⴀ໯ߴ‫้ڦ؜‬क़๟޿ഗॲኈኟ‫ڦ‬ጺ၍๥‫้ݣ‬क़ǈᅺܸᇑྔևጺ၍޶ሜ‫ۉ‬ඹ࿮࠲ă RDYሞ‫܁‬ൽADCኮࢫ‫ۉߛ࣮ݓ‬ೝăሞ‫ْڇ‬ገ࣑ఇ๕ࢅ૶Ⴤገ࣑ఇ๕ူǈ‫ړ‬RDYྺߛ‫ۉ‬ೝ้ǈසࡕႴᄲǈ੗ᅜምْ‫܁‬ൽཞᅃຕ਍ǈ‫ڍ‬ᆌඓԍࢫჄ‫܁‬ൽ֡ፕ‫ิ݀ڦ‬ ้क़!! փీথৎူᅃْ๼‫߸؜‬ႎ้क़ă૶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. D | Page 8 of 36 04854-002 6 AD7794/AD7795 ้Ⴞ཮ CS (I) t6 t1 t5 MSB DOUT/RDY (O) LSB t7 t2 t3 04854-003 SCLK (I) t4 I = INPUT, O = OUTPUT ཮3. ‫܁‬ൽዜ೺้Ⴞ཮ CS (I) t11 t8 SCLK (I) t9 t10 MSB I = INPUT, O = OUTPUT ཮4. ႀ෇ዜ೺้Ⴞ཮ Rev. D | Page 9 of 36 LSB 04854-004 DIN (I) AD7794/AD7795 ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ‫ݥأ‬ଷᆶຫ௽ǈTA = 25°Că ՗3 ጀᅪǈ‫؜ג‬ฉຎਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ੗ీࣷ‫ڞ‬ዂഗॲᆦ৳Ⴀ໦ ࣋ăኄኻ๟‫ۨܮ‬ᆌ૰ኵǈփᅪ࿆ጣഗॲሞኄၵईኁඪࢆഄ ໲‫؜ג‬Ԩरຍࡀ߭ກ‫ీࠀڦ‬Ⴀ֡ፕቤব૛Ք௽‫ڦ‬ཉॲူ‫ڦ‬ ࠀీႠ֡ፕă‫׊‬೺ሞਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵཉॲူ߾ፕࣷᆖၚഗ ॲ‫ڦ‬੗੍Ⴀă ֖ຕ!! ‫ۨܮ‬ኵ!! AV DD ዁GND −0.3 V ዁+7 V DV DD ዁GND −0.3 V ዁+7 V ఇె๼෇‫ۉ‬უ዁GND −0.3 V ዁AV DD + 0.3 V एጚ๼෇‫ۉ‬უ዁GND −0.3 V ዁AV DD + 0.3 V ຕጴ๼෇‫ۉ‬უ዁GND −0.3 V ዁DV DD + 0.3 V ຕጴ๼‫ۉ؜‬უ዁GND −0.3 V ዁DV DD + 0.3 V ৑࠶Ԩׂ೗ਏᆶጆ૧ईጆᆶԍࢺ‫ۉ‬ୟǈ‫ڍ‬ሞᇜ‫ీߛڟ‬ AIN/ ຕጴ๼෇‫ୁۉ‬ 10 mA ଉFTE้ǈഗॲ੗ీࣷ໦࣋ăᅺُǈᆌ‫֑ړ‬ൽ๢‫ڦړ‬ ESDয়ߢ ESD)ৢ‫ߌ௺*ۉݣۉ‬ഗॲă ‫ۉټ‬ഗॲࢅ‫ۉ‬ୟӱ੗ీࣷሞுᆶִਥ‫ڦ‬൧઄ူ‫ۉݣ‬ă ߾ፕ࿒‫ྷݔ܈‬ FTE‫ٯݔݞ‬แǈᅜՆ௨ഗॲႠీူইईࠀీෟ฿ă Bप −40°C ዁+105°C Cप −40°C ዁+125°C ٪‫ئ‬࿒‫ྷݔ܈‬ −65°C ዁+150°C ፌߛ঳࿒ 150°C TSSOP θJA ඤፆੇ 97.9°C/W θJC ඤፆੇ 14°C/W ᆅগ࿒‫܈‬ǈࡰথ ഘ၎Ǆ60௱ǅ 215°C ࢤྔǄ15௱ǅ 220°C Rev. D | Page 10 of 36 AD7794/AD7795 ᆅগದዃࢅࠀీ௮ຎ SCLK 1 24 DIN CLK 2 23 DOUT/RDY CS 3 NC 4 AIN6(+)/P1 5 AD7794/ AD7795 21 AVDD 20 GND 19 PSW TOP VIEW AIN1(+) 7 (Not to Scale) 18 AIN4(–)/REFIN2(–) AIN1(–) 8 17 AIN4(+)/REFIN2(+) AIN2(+) 9 16 AIN5(–)/IOUT1 AIN2(–) 10 15 AIN5(+)/IOUT2 AIN3(+) 11 14 REFIN1(–) AIN3(–) 12 13 REFIN1(+) NC = NO CONNECT 04854-005 AIN6(–)/P2 6 22 DVDD ཮5. ᆅগದዃ ՗4. ᆅগࠀీ௮ຎ ᆅগՊࡽ ᆅগఁ‫׬‬ 1 SCLK ௮ຎ ‫ز‬ႜ้ዓ๼෇ăᆩᇀઠྫADC‫ڦ‬ຕ਍‫د‬๼ăSCLKਏᆶแ௢༬‫݀ة‬๕๼෇ǈᅺܸ޿থ੨๢ࢇ࠼߰૗ᆌ ᆩă޿‫ز‬ႜ้ዓ੗ᅜ๟૶Ⴤ๕้ዓǈ໯ᆶຕ਍਩ሞ૶Ⴤ‫ڦ‬ஞ؋‫ز‬ዐ‫د‬๼ăईኁǈ໲ᄺ੗ᅜ๟‫૶ݥ‬Ⴤ ๕้ዓǈઠྫADC‫ڦ‬႑တᅜডၭ‫ڦ‬ຕ਍Ԉႚ๕‫د‬๼ă 2 CLK ้ዓ๼෇/้ዓ๼‫؜‬ăཚࡗُᆅগ੗༵ࠃాև้ዓăईኁǈ੗্ᆩాև้ዓǈժ֑ᆩྔև้ዓൻ‫޿ۯ‬ ADCăኄᄣǈ‫߲ܠ‬ADC੗ᅜ֑ᆩཞᅃ้ዓൻ‫ۯ‬ǈܸٗኴႜཞօገ࣑ă 3 CS ೌ჋๼෇ăኄ๟ᅃ߲‫ۉگ‬ೝᆶၳஇड๼෇ǈᆩᇀ჋ስADCăCS੗ᅜᆩઠሞ‫ز‬ႜጺ၍ฉਏᆶ‫߲ܠ‬ഗॲ‫ڦ‬ ဣཥዐ჋ስADCǈईኁᆩፕኡཞօ႑ࡽᇑഗॲཚ႑ăCS੗ᅜᆩᆘ૶၍‫ݛ‬๕ዃྺ‫ۉگ‬ೝǈ๑‫ڥ‬ADCీᅜ3 ၍๕ఇ๕߾ፕǈ๑ᆩSCLKĂDINࢅDOUTᇑഗॲথ੨ă 4 5 NC AIN6(+)/P1 6 AIN6(−)/P2 7 8 9 10 11 12 13 AIN1(+) AIN1(−) AIN2(+) AIN2(−) AIN3(+) AIN3(−) REFIN1(+) 14 15 REFIN1(−) AIN5(+)/IOUT2 փ૶থă ఇె๼෇/ຕጴ๼‫؜‬ᆅগăAIN6(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN6(+)/AIN6(−)‫ڦ‬ኟ‫܋‬ăُᆅগᄺ੗ᅜᆩፕཚᆩ ๼‫؜‬࿋ǈᅜAVDDᇑGNDኮक़‫ۉڦ‬უྺएጚă ఇె๼෇/ຕጴ๼‫؜‬ᆅগăAIN6(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN6(+)/AIN6(−)‫܋޶ڦ‬ăُᆅগᄺ੗ᅜᆩፕཚᆩ๼ ‫؜‬࿋ǈᅜAVDDᇑGNDኮक़‫ۉڦ‬უྺएጚă ఇె๼෇ăAIN1(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫ڦ‬ኟ‫܋‬ă ఇె๼෇ăAIN1(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫܋޶ڦ‬ă ఇె๼෇ăAIN2(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫ڦ‬ኟ‫܋‬ă ఇె๼෇ăAIN2(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫܋޶ڦ‬ă ఇె๼෇ăAIN3(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/AIN3(−)‫ڦ‬ኟ‫܋‬ă ఇె๼෇ăAIN3(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/AIN3(−)‫܋޶ڦ‬ă ኟएጚ‫ۉ‬უ๼෇ă੗ᅜሞREFIN1(+)ᇑREFIN1(−)ኮक़แेᅃ߲ྔևएጚ‫ۉ‬უăREFIN1(+)੗ᅜ๟AVDDᇑ GND + 0.1 Vኮक़‫ڦ‬ඪᅪኵăՔ‫׬‬एጚ‫ۉ‬უ(REFIN1(+) − REFIN1(−))ྺ2.5 Vǈ‫޿ڍ‬ഗॲ੗ᅜ֑ᆩ0.1 V዁ AVDD‫ڦాྷݔ‬एጚ‫ۉ‬უ߾ፕă ޶एጚ‫ۉ‬უ๼෇ăُएጚ‫ۉ‬უ๼෇੗ᅜ๟GNDᇑAVDD - 0.1 Vኮक़‫ڦ‬ඪᅪኵă ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬ఇె๼෇/๼‫؜‬ăAIN5(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN5(+)/AIN5(−)‫ڦ‬ኟ‫܋‬ăईኁǈాևघ ૤‫ୁۉ‬ᇸ੗ᅜཚࡗُᆅগ༵ࠃǈժ൐๟੗Պ‫ڦײ‬ǈᅜՍ༵ࠃ10 μAĂ210 μAई1 mA‫ୁۉ‬ă੗ᅜॽIEXC1 ईIEXC2ൎ࣑዁ُ๼‫؜‬ă 16 AIN5(−)/IOUT1 17 AIN4(+)/REFIN2(+) ఇె๼෇/ኟएጚ‫ۉ‬უ๼෇ăAIN4(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN4(+)/AIN4(−)‫ڦ‬ኟ‫܋‬ăُᆅগᄺ੗ᅜᆩፕ REFIN2‫ڦ‬ኟएጚ‫ۉ‬უ๼෇ăREFIN2(+)੗ᅜ๟AVDDᇑGND + 0.1 Vኮक़‫ڦ‬ඪᅪኵăՔ‫׬‬एጚ‫ۉ‬უ )REFIN2(+)዁REFIN2(−)*ྺ2.5 Vǈ‫޿ڍ‬ഗॲ੗ᅜ֑ᆩ0.1 V዁AVDD‫ڦాྷݔ‬एጚ‫ۉ‬უ߾ፕă ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬ఇె๼෇/๼‫؜‬ăAIN5(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN5(+)/AIN5(−)‫܋޶ڦ‬ăईኁǈాևघ ૤‫ୁۉ‬ᇸ੗ᅜཚࡗُᆅগ༵ࠃǈժ൐๟੗Պ‫ڦײ‬ǈᅜՍ༵ࠃ10 μAĂ210 μAई1 mA‫ୁۉ‬ă੗ᅜॽIEXC1 ईIEXC2ൎ࣑዁ُ๼‫؜‬ă Rev. D | Page 11 of 36 AD7794/AD7795 ᆅগՊࡽ ᆅগఁ‫׬‬ ௮ຎ 18 AIN4(−)/REFIN2(−) ఇె๼෇/޶एጚ‫ۉ‬უ๼෇ăAIN4(−)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN4(+)/AIN4(−)‫܋޶ڦ‬ăُᆅগᄺ੗ᅜᆩፕ REFIN2‫޶ڦ‬एጚ‫ۉ‬უ๼෇ăُएጚ‫ۉ‬უ๼෇੗ᅜ๟GNDᇑAVDD - 0.1 Vኮक़‫ڦ‬ඪᅪኵă 19 20 21 22 PSW GND AVDD DVDD 23 DOUT/RDY 24 DIN ‫ۉ܋گ‬ᇸਸ࠲ǈথGNDă থ‫ں‬एጚ‫ۅ‬ă ‫ۉ‬ᇸ‫ۉ‬უǈ2.7 V዁5.25 Vă ‫ز‬ႜথ੨‫ۉ‬ᇸ‫ۉ‬უǈ2.7 V዁5.25 VăDVDD‫܀‬૬ᇀAVDDăᅺُǈ‫ز‬ႜথ੨߾ፕሞ3 VǈܸAVDDྺ5 Vǈ ईኁ၎‫ݒ‬ă ‫ز‬ႜຕ਍๼‫؜‬/ຕ਍৽Ⴣ๼‫؜‬ăDOUT/RDYਏᆶມዘፕᆩă໲੗ᅜᆩፕ‫ز‬ႜຕ਍๼‫؜‬ᆅগǈᅜ‫ݡ‬࿚ADC‫ڦ‬ ๼‫؜‬ᅎ࿋स٪ഗă๼‫؜‬ᅎ࿋स٪ഗ੗ᅜࡤᆶઠጲඪᅃೌాຕ਍स٪ഗई੦዆स٪ഗ‫ڦ‬ຕ਍ăُྔǈ DOUT/RDY੗ᅜᆩፕຕ਍৽ჃᆅগǈՎྺ‫ۉگ‬ೝ้՗๖ገ࣑ᅙྜ‫ׯ‬ăገ࣑ྜ‫ࢫׯ‬ǈසࡕຕ਍࿄ԥ‫܁‬ൽǈ ޿ᆅগॽሞူᅃْ߸ႎ݀ิኮമՎྺߛ‫ۉ‬ೝăDOUT/RDYူইᄂᄺ੗ᅜᆩፕ‫ت‬૙ഗ‫ڦ‬ዐ܏ǈ՗๖٪ሞ੗ ᆩ‫ڦ‬ᆶၳຕ਍ă֑ᆩྔև‫ز‬ႜ้ዓ้ǈ੗ᅜ૧ᆩDOUT/RDYᆅগ‫܁‬ൽຕ਍ăCSྺ‫ۉگ‬ೝ้ǈຕ਍/੦዆ጴ႑ တሞSCLKူইᄂዃᇀDOUT/RDYᆅগฉǈሞSCLKฉืᄂᆶၳă ADC๼෇ᅎ࿋स٪ഗ‫زڦ‬ႜຕ਍๼෇ă޿ᅎ࿋स٪ഗዐ‫ڦ‬ຕ਍‫د‬๼዁ADCా‫ڦ‬੦዆स٪ഗǈཚ႑स ٪ഗ‫ڦ‬स٪ഗ჋ስ࿋ඓۨ๢‫ڦړ‬स٪ഗă Rev. D | Page 12 of 36 AD7794/AD7795 ਩‫ߵݛ‬ሯำᇑ‫ݴ‬Ր୲༬Ⴀ! AD7794/AD7795੗ᅜ߾ፕሞቘհ๑ీईቘհ্ᆩఇ๕ူǈ ܸٗํ၄ፌॅൎ้࣑क़ई೏ᅎႠీăቘհ๑ీ้ǈॺ૬้ क़ྺገ้࣑क़‫ڦ‬ଇԠă‫ڍ‬๟ǈADCࣷ‫׼‬Ⴤၩ‫أ‬฿ۙǈ๑‫ڥ‬ ฿ۙࢅ฿ۙ೏ᅎ࢔‫گ‬ăቘհ্ᆩ้ǈඹႹ‫߸ڦ‬ႎ໏୲ᇑቘ հ๑ీఇ๕၎ཞă‫ڍ‬๟ǈُ้ॺ૬้क़ᇑገ้࣑क़၎‫ڪ‬ă ቘհ্ᆩ้ǈADCփࣷၩ‫أ‬฿ۙǈᅺُ੗ీႴᄲۨ೺ኴႜ ฿ۙၯጚǈᅜၩ‫أ‬೏ᅎᆅഐ‫ڦ‬฿ۙă ቘհ๑ీ! ྔևएጚ‫ۉ‬უ ՗5ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7794/AD7795 ਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍๟ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ᅜत֑ ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸܸჾăኄၵຕ਍ྺ‫ۆ‬႙ኵǈ๟ሞֶ ‫ݴ‬๼෇‫ۉ‬უྺ0 V‫ڦڟڥࢪ้ڦ‬ă ՗6ࢅ՗7ߴ‫؜‬କᆶၳ‫ݴ‬Ր୲ǈ๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր୲ሶଚ ᇀઔࡽዐăՂႷጀᅪǈᆶၳ‫ݴ‬Ր୲๟૧ᆩ਩‫ߵݛ‬ሯำऺ໙ ‫؜ڥ‬ǈܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙‫؜ڥ‬ă‫ރ‬ ‫ރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵຕ਍ྺ‫ۆ‬ ႙ኵǈᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă ՗5. ਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸǈቘհ๑ీ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 0.64 1.04 1.55 2.3 2.95 4.89 11.76 11.33 G=2 0.6 0.96 1.45 2.13 2.85 4.74 9.5 9.44 G=4 0.29 0.38 0.54 0.74 0.92 1.49 4.02 3.07 G=8 0.22 0.26 0.36 0.5 0.58 1 1.96 1.79 G = 16 0.1 0.13 0.18 0.23 0.29 0.48 0.88 0.99 G = 32 0.065 0.078 0.11 0.17 0.2 0.32 0.45 0.63 G = 64 0.039 0.057 0.087 0.124 0.153 0.265 0.379 0.568 G = 128 0.041 0.055 0.086 0.118 0.144 0.283 0.397 0.593 G = 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) G = 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) G = 64 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15) 16 (14.5) G = 128 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14) 16 (13.5) ՗6. AD7794ᆶၳ‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸǈቘհ๑ీ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=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) G=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) G=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) G=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) G = 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) G = 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. AD7795ᆶၳ‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸǈቘհ๑ీ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) G=2 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15.5) G=4 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) G=8 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) G = 16 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) Rev. D | Page 13 of 36 G = 32 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) AD7794/AD7795 ాևएጚ‫ۉ‬უ ՗8ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7794/AD7795 ਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍๟ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ᅜत֑ ᆩ1.17 Vాևएጚ‫ۉ‬უᇸܸჾăኄၵຕ਍ྺ‫ۆ‬႙ኵǈ๟ሞֶ ‫ݴ‬๼෇‫ۉ‬უྺ0 V‫ڦڟڥࢪ้ڦ‬ă՗9ࢅ՗10ߴ‫؜‬କᆶၳ‫ݴ‬ Ր୲ǈ๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր୲ሶଚᇀઔࡽዐă ՂႷጀᅪǈᆶၳ‫ݴ‬Ր୲๟૧ᆩ਩‫ߵݛ‬ሯำऺ໙‫؜ڥ‬ǈܸ‫ރ‬ ‫ރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙‫؜ڥ‬ă‫ރރ‬ኵ‫ݴ‬Ր୲ ՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵຕ਍ྺ‫ۆ‬႙ኵǈᅙ຺ ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă ՗8. ਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ๑ీǅ ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 0.81 1.18 1.96 2.99 3.6 5.83 11.22 12.46 G=2 0.67 1.11 1.72 2.48 3.25 5.01 8.64 10.58 G=4 0.32 0.41 0.55 0.83 1.03 1.69 2.69 4.58 G=8 0.2 0.25 0.36 0.48 0.65 0.96 1.9 2 G = 16 0.13 0.16 0.25 0.33 0.46 0.67 1.04 1.27 G = 32 0.065 0.078 0.11 0.17 0.2 0.32 0.45 0.63 G = 64 0.04 0.058 0.088 0.13 0.15 0.25 0.35 0.50 G = 128 0.039 0.059 0.088 0.12 0.15 0.26 0.34 0.49 G = 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) G = 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) G = 64 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15.5) 16 (14.5) 16 (14) 16 (13.5) G = 128 16 (16) 16 (15.5) 16 (15) 16 (14.5) 16 (14.5) 16 (13.5) 15.5 (13) 15 (12.5) ՗9. AD7794ᆶၳ‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ๑ీ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=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) G=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) G=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) G=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) G = 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) G = 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. AD7795ᆶၳ‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ๑ీ) ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (15) G=2 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14.5) G=4 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (14.5) G=8 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14.5) G = 16 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15) 16 (14.5) 16 (14.5) Rev. D | Page 14 of 36 G = 32 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15) 16 (14.5) AD7794/AD7795 ቘհ্ᆩ! ቘհ্ᆩ้ǈൎ้࣑क़ईॺ૬้क़໫‫܌‬2Ԡă‫ڍ‬๟ǈُ้ ੗ీႴᄲۨ೺ኴႜ฿ۙၯጚǈᅜၩ‫أ‬฿ۙࢅ฿ۙ೏ᅎăቘ հ্ᆩ้ǈఇ๕स٪ഗዐ‫ڦ‬AMP-CM࿋ᆌዃ1ǈኄࣷ၌዆ ੗ᆩ‫ڦ‬ඹႹࠌఇ‫ۉ‬უăසࡕُ࿋փዃ1ǈࠌఇᅞ዆Ⴀీࣷ ူইă ໯༵ࠃ‫ڦ‬ຕ਍๟ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ᅜत֑ᆩ1.17 Vాև एጚ‫ۉ‬უᇸܸჾăኄၵຕ਍ྺ‫ۆ‬႙ኵǈ๟ሞֶ‫ݴ‬๼෇‫ۉ‬უ ྺ0 V‫ڦڟڥࢪ้ڦ‬ă ՗12ࢅ՗13ߴ‫؜‬କᆶၳ‫ݴ‬Ր୲ǈ๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր୲ሶ ଚᇀઔࡽዐăՂႷጀᅪǈᆶၳ‫ݴ‬Ր୲๟૧ᆩ਩‫ߵݛ‬ሯำऺ ໙‫؜ڥ‬ǈܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙‫؜ڥ‬ă ‫ރރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵຕ਍ྺ ‫ۆ‬႙ኵǈᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă ՗ 11ߴ ‫ ؜‬କ ቘ հ ্ ᆩ ้ ᅃ ၵ ߸ ႎ ໏ ୲ ࢅ ሺ ᅮ ย ዃ ူ ‫ڦ‬ AD7794/AD7795਩‫ߵݛ‬ሯำă ՗11. ਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ)֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ্ᆩǅ ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 0.64 1.04 1.55 2.3 2.95 4.89 11.76 11.33 G=2 0.6 0.96 1.45 2.13 2.85 4.74 9.5 9.44 G=4 0.29 0.38 0.54 0.74 0.92 1.49 4.02 3.07 G=8 0.22 0.26 0.36 0.5 0.58 1 1.96 1.79 G = 16 0.1 0.13 0.18 0.23 0.29 0.48 0.88 0.99 G = 32 0.065 0.078 0.11 0.17 0.2 0.32 0.45 0.63 G = 64 0.039 0.057 0.087 0.124 0.153 0.265 0.379 0.568 G = 128 0.041 0.055 0.086 0.118 0.144 0.283 0.397 0.593 ՗12. AD7794ᆶၳ‫ݴ‬Ր୲)࿋*ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ)֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ্ᆩǅ ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=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) G=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) G=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) G=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) G = 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) G = 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) G = 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) G = 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) ՗13. AD7795ᆶၳ‫ݴ‬Ր୲)࿋*ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ)֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸǈቘհ্ᆩǅ ߸ႎ໏୲(Hz) 4.17 8.33 16.7 33.2 62 123 242 470 G=1 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) G=2 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15.5) G=4 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) G=8 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (16) G = 16 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) Rev. D | Page 15 of 36 G = 32 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) G = 64 16 (16) 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (15) 16 (14.5) G = 128 16 (16) 16 (16) 16 (16) 16 (16) 16 (15.5) 16 (14.5) 16 (14) 16 (13.5) AD7794/AD7795 14 8388750 12 8388700 10 8388650 8388600 8 6 8388550 4 8388500 2 8388450 0 200 400 600 800 04854-009 OCCURRENCE 8388800 04854-006 CODE READ ‫ۆ‬႙߾ፕ༬Ⴀ 0 8388068 8388100 1000 8388150 8388200 8388250 8388300 8388350 8388396 CODE READING NUMBER ཮6. AD7794‫ۆ‬႙ሯำ཮ (ాևएጚ‫ۉ‬უǈሺᅮ = 64ǈ߸ႎ໏୲ = 16.7 Hzǈቘհ๑ీ) ཮9. AD7794ሯำ‫ݴ‬ք኱‫ా)཮ݛ‬ևएጚ‫ۉ‬უǈ ሺᅮ = 64ǈ߸ႎ໏୲ = 16.7 Hzǈቘհ্ᆩǈAMP-CM = 1ǅ 16 14 20 10 (%) OCCURRENCE 12 8 10 6 04854-007 2 0 8388482 8388520 8388560 8388600 8388640 8388680 8388720 04854-010 4 0 –2.0 8388750 –1.2 –0.8 CODE 0.4 0.8 1.2 1.6 2.0 ཮10. ࣍ৣ࿒‫้܈‬घ૤‫ୁۉ‬೅ದ(210 μA) 90 8388400 80 8388350 70 POWER-UP TIME (ms) 8388450 8388300 8388250 8388200 8388150 60 50 BOOST = 0 40 30 0 200 400 600 800 1000 READING NUMBER 10 0 04854-011 20 8388100 04854-008 CODE READ 0 MATCHING (%) ཮7. AD7794ሯำ‫ݴ‬ք኱‫཮ݛ‬ )ాևएጚ‫ۉ‬უǈሺᅮ = 64ǈ߸ႎ໏୲ = 16.7 Hzǈቘհ๑ీǅ 8388050 –0.4 BOOST = 1 0 200 400 600 800 1000 LOAD CAPACITANCE (nF) ཮8. AD7794‫ۆ‬႙ሯำ཮)ాևएጚ‫ۉ‬უǈ ሺᅮ = 64ǈ߸ႎ໏୲ = 16.7 HzǈAMP-CM = 1ǈቘհ্ᆩǅ ཮11. ೋዃ‫ۉ‬უ݀ิഗฉ‫้ۉ‬क़ᇑ޶ሜ‫ۉ‬ඹ‫࠲ڦ‬ဣ Rev. D | Page 16 of 36 AD7794/AD7795 ೌాस٪ഗ! ADCཚࡗೌాस٪ഗ৊ႜ੦዆ࢅದዃǈူ௬‫ڦ‬ቤবॽຫ௽ ኄၵस٪ഗăሞူ௬‫ڦ‬௮ຎዐǈ“ዃ1”՗๖இड1ጒༀǈ“ൣ 0”՗๖இड0ጒༀǈ‫ݥأ‬ଷᆶຫ௽ă ཚ႑स٪ഗ RS2, RS1, RS0 = 0, 0, 0 ཚ႑स٪ഗ๟ᅃ߲8࿋ኻႀस٪ഗăᇑADCഗॲ‫ڦ‬໯ᆶཚ ႑਩ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ăႀ෇ཚ႑स٪ഗ ‫ڦ‬ຕ਍ਦۨူᅃ߲֡ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ፕǈᅜतُ֡ፕ ݀ ิሞనᅃ߲स٪ഗă‫ܔ‬ᇀ‫܁‬ईႀ֡ፕǈ‫ܔړ‬჋ۨस٪ഗ‫ڦ‬ ‫܁‬ईႀ֡ፕྜ‫ࢫׯ‬ǈথ੨‫ܔڟ࣮ݓ‬ཚ႑स٪ഗኴႜႀ֡ፕ ‫ڦ‬ጒༀăኄ๟থ੨‫ڦ‬ఐණጒༀǈܸ൐ሞฉ‫ۉ‬ईް࿋ࢫǈ ADC‫ت‬ᇀُఐණጒༀǈ‫ܔځڪ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕăසࡕ থ੨้Ⴞ௚฿ǈኴႜᅃ߲቞ᆩ዁ณ32߲‫ز‬ႜ้ዓዜ೺‫ڦ‬ႀ ֡ፕǈժ๑DIN‫ت‬ᇀߛ‫ۉ‬ೝጒༀǈॽ੗ᅜް࿋ኝ߲ഗॲǈ ๑ADC‫ُ࣮ݓ‬ఐණጒༀă՗14ଚ‫؜‬କཚ႑स٪ഗ߳࿋‫ڦ‬ఁ ‫ࢅ׬‬ᅪᅭăCR0዁CR7՗๖࿋‫ڦ‬࿋ዃǈCRຫ௽ኄၵ࿋ຌᇀ ཚ႑स٪ഗăCR7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗ ๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă CR7 CR6 CR5 CR4 CR3 CR2 CR1 CR0 WEN(0) R/W(0) RS2(0) RS1(0) RS0(0) CREAD(0) 0(0) 0(0) ՗14. ཚ႑स٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ࿋ࡽ CR7 ఁ‫׬‬ WEN ௮ຎ ႀ෇๑ీ࿋ăՂႷॽ0ႀ෇ُ࿋ǈ֍ీ๑‫ܔ‬ཚ႑स٪ഗႀ֡ፕํा݀ิăසࡕ‫ڼ‬ᅃ࿋ႀ෇1ǈሶഗॲփࣷॽໜࢫ ‫ڦ‬࿋ሜ෇स٪ഗǈ໲ॽཕାሞُ࿋‫ڦ‬࿋ዃǈ኱‫ُڟ‬࿋ႀ෇0ăᅃ‫ॽڋ‬0ႀ෇!!! WEN ࿋ǈഗॲՍࣷॽࢫჄ7࿋ሜ෇ཚ ႑स٪ഗă CR6 R/W CR5 ዁ CR3 CR2 RS2 ዁ RS0 සࡕُ࿋ྺ0ǈሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸۨस٪ഗኴႜႀ֡ፕăසࡕُ࿋ྺ1ǈሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸۨस ٪ഗኴႜ‫֡܁‬ፕă स٪ഗ‫ں‬኷࿋ăኄၵ‫ں‬኷࿋ਦۨ‫ز‬ႜথ੨ཚ႑೺क़჋ስADC‫ڦ‬నၵस٪ഗă֖९՗15ă CREAD ૶Ⴤ‫܁‬ൽຕ਍स٪ഗă‫ُړ‬࿋ྺ1(ժ൐ᅙ჋ስຕ਍स٪ഗ)้ǈ‫ز‬ႜথ੨੗ᅜ૶Ⴤ‫܁‬ൽຕ਍स٪ഗǗनሞRDYᆅগ Վྺ‫ۉگ‬ೝ(՗๖ገ࣑ᅙྜ‫ࢫ)ׯ‬แेSCLKஞ؋้ǈຕ਍स٪ഗ‫ాڦ‬ඹॽጲ‫ۯ‬ዃᇀDOUTᆅগฉă‫ܔ‬ᇀࢫჄຕ਍ ‫܁‬ൽǈփՂ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕăᄲ๑ీ૶Ⴤ‫܁‬ൽఇ๕ǈՂႷॽኸସ01011100ႀ෇ཚ႑स٪ഗăැᄲཽ ‫૶؜‬Ⴤ‫܁‬ൽఇ๕ǈՂႷሞRDYᆅগྺ‫ۉگ‬ೝ้ॽኸସ01011000ႀ෇ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူǈADCࣷ॔ ੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬ǈᅜՍీথ๭ኸସᅜཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕ăُྔǈසࡕDINฉ‫؜‬၄32߲૶Ⴤ1ǈADCॽް࿋ă ᅺُǈሞ૶Ⴤ‫܁‬ൽఇ๕ူǈDINᆌԍ‫ۉگ׼‬ೝǈ኱‫ڟ‬ᆶኸସႀ෇޿ഗॲă CR1 ዁ CR0 0 ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ՗15. 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 ႀ֡ፕ೺क़ྺཚ႑स٪ഗ ‫֡܁‬ፕ೺क़ྺጒༀस٪ഗ ఇ๕स٪ഗ ದዃस٪ഗ ຕ਍स٪ഗ IDस٪ഗ IOस٪ഗ ฿ۙस٪ഗ ஢ଉ‫ײ‬स٪ഗ स٪ഗ‫ٷ‬ၭ 8࿋ 8࿋ 16࿋ 16࿋ 24࿋(AD7794)/16࿋(AD7795) 8࿋ 8࿋ 24࿋(AD7794)/16࿋(AD7795) 24࿋(AD7794)/16࿋(AD7795) Rev. D | Page 17 of 36 AD7794/AD7795 ጒༀस٪ഗ RS2, RS1, RS0 = 0, 0, 0；ฉ‫ۉ‬/ް࿋ = 0x80 (AD7795) / 0x88 (AD7794) ጒༀस٪ഗ๟ᅃ߲8࿋ኻ‫܁‬स٪ഗăᄲ‫ݡ‬࿚ADCጒༀस٪ ഗǈᆩࢽՂႷႀ෇ཚ႑स٪ഗǈ჋ስူᅃ߲֡ፕྺ‫֡܁‬ ፕǈժॽ0ሜ෇࿋RS2Ă࿋RS1ࢅ࿋RS0ă ՗16ଚ‫؜‬କጒༀस٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭăSR0዁SR7՗๖ ࿋‫ڦ‬࿋ዃǈSRຫ௽ኄၵ࿋ຌᇀጒༀस٪ഗăSR7՗๖ຕ਍ ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒ ༀă SR7 SR6 SR5 SR4 SR3 SR2 SR1 SR0 RDY(1) ERR(0) NOXREF(0) 0(0) 0/1 CH2(0) CH1(0) CH0(0) ՗14. ཚ႑स٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ՗16. ጒༀस٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ࿋ࡽ SR7 ఁ‫׬‬ RDY ௮ຎ ADC৽Ⴣ࿋ăຕ਍ႀ෇ADCຕ਍स٪ഗࢫൣ0ă‫܁‬ൽADCຕ਍स٪ഗኮࢫǈईኁሞᆩႎገ࣑঳ࡕ߸ႎຕ਍स٪ ഗኮമ‫ڦ‬ᅃ้ۨक़ాǈRDY࿋ጲ‫ۯ‬ዃ1ǈᅜߢኪᆩࢽփᆌ‫܁‬ൽገ࣑ຕ਍ăഗॲሞู‫ۉ‬ఇ๕ူǈ໲ᄺࣷዃ1ă DOUT/RDYᆅগᄺࣷኸ๖ገ࣑ࢆ้঳ຐă޿ᆅগ੗ᅜ‫༺پ‬ጒༀस٪ഗઠ॔๫ADCᆶ࿮ገ࣑ຕ਍ă SR6 ERR ADC‫ٱ‬ဃ࿋ăُ࿋ᇑRDY࿋ཞ้ႀ෇ăዃ1้ຫ௽ႀ෇ADCຕ਍स٪ഗ‫ڦ‬঳ࡕᶏ࿋ྺඇ0ईඇ1ă‫ٱ‬ဃᇱᅺԈઔ ‫ג‬ଉ‫ײ‬Ăവଉ‫ײ‬ईඍณएጚ‫ۉ‬უăᆯഔ‫ۯ‬ገ࣑‫ڦ‬ႀ֡ፕൣ0ă SR5 NOXREF ࿮ྔևएጚ‫ۉ‬უ࿋ăዃ1้ຫ௽჋ۨ‫ڦ‬एጚ‫ۉ‬უ)REFIN1ईREFIN2*‫گ‬ᇀࡀۨ‫ڦ‬ពኵăዃ1ࢫǈገ࣑঳ࡕᶏ࿋ྺ ඇ1ăൣ0ሶຫ௽‫ܔ‬჋ۨ‫ڦ‬एጚ‫ۉ‬უᆅগแेକᆶၳएጚ‫ۉ‬უăॽದዃस٪ഗዐ‫ڦ‬REF_DET࿋ዃ1੗๑ీ NOXREF࿋ăසࡕแेᇀ჋ۨएጚ‫ۉ‬უ๼෇‫ۉڦ‬უ࿮ၳǈሶERR࿋ᄺዃ1ă SR4 SR3 SR2 to SR0 0 0/1 CH2 to CH0 ُ࿋ጲ‫ۯ‬ൣ0ă ‫ܔ‬ᇀAD7795ǈُ࿋ጲ‫ۯ‬ൣ0Ǘ‫ܔ‬ᇀAD7794ǈُ࿋ጲ‫ۯ‬ዃ1ă ኄၵ࿋՗๖ADCኟሞገ࣑నᅃཚ‫ڢ‬ă Rev. D | Page 18 of 36 AD7794/AD7795 ఇ๕स٪ഗ RS2, RS1, RS0 = 0, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x000A ఇ๕स٪ഗ๟ᅃ߲16࿋‫܁‬ႀस٪ഗǈᆩઠ჋ስ߾ፕఇ๕Ă ߸ႎ໏୲ࢅ้ዓᇸă ՗17ଚ‫؜‬କఇ๕स٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭăMR0዁MR15 MR15 MD2(0) MR7 CLK1(0) MR14 MD1(0) MR6 CLK0(0) MR13 MD0(0) MR5 0(0) MR12 PSW(0) MR4 CHOP-DIS(0) ՗๖࿋‫ڦ‬࿋ዃǈMRຫ௽ኄၵ࿋ຌᇀఇ๕स٪ഗăMR15๟ ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණ ጒༀăኻᄲ‫ܔ‬ยዃस٪ഗኴႜႀ֡ፕǈ৽ࣷް࿋ۙ዆ഗࢅ ୳հഗǈժ๑ ࿋ዃ1ă MR11 0(0) MR3 FS3(1) MR10 0(0) MR2 FS2(0) MR9 AMP-CM(0) MR1 FS1(1) MR8 0(0) MR0 FS0(0) ՗17. ఇ๕स٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ࿋ࡽ MR15 ዁ MR13 MR12 ఁ‫׬‬ MD2 ዁ MD0 PSW ௮ຎ MR11 ዁ MR10 MR9 0 AMP-CM ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ᅏ՗‫ٷݣ‬ഗࠌఇ࿋ăُ࿋ᇑCHOP-DIS࿋ᅃཞ๑ᆩăቘհ্ᆩ൐AMP-CMൣ0้ǈᆩࢽ੗ᅜइ‫੻߸ڥ‬ ‫ࠌڦ‬ఇ‫ۉ‬უ‫ྷݔ‬ă‫ڍ‬๟ǈ኱ୁࠌఇᅞ዆ႠీࣷူইăAMP-CMዃ1้ǈࠌఇ‫ۉ‬უ‫ྷݔ‬໫ၭǄ֖९र ຍࡀ߭և‫ݴ‬ǅă‫ڍ‬๟ǈ኱ୁࠌఇᅞ዆Ⴀీ၂ዸ༵ߛă MR8 MR7 ዁ MR6 0 CLK1 ዁ CLK0 ՂႷॽُ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ኄၵ࿋ᆩઠ჋ስAD7794/AD7795‫้ڦ‬ዓᇸă੗ᅜ๑ᆩೌా64 kHz้ዓईྔև้ዓă๑ᆩྔև้ዓ้ǈ ‫߲ܠ‬AD7794/AD7795ഗॲ੗ᅜཞօăُྔǈ‫֑ړ‬ᆩ৛ඓ‫ྔڦ‬և้ዓൻ‫ۯ‬AD7794/AD7795้ǈ੗ᅜ߀ ฀50 Hz/60 Hzᅞ዆Ⴀీă ‫ۉ‬ᇸਸ࠲੦዆࿋ăዃ1้ǈ‫ۉ‬ᇸਸ࠲PSWԿࢇ዁GNDă‫ۉ‬ᇸਸ࠲੗༵ࠃ30 mA‫ڦ‬ဌ‫ୁۉ‬ăൣ0้ǈ‫ۉ‬ᇸਸ ࠲܏ਸă‫ړ‬ADC‫ت‬ᇀู‫ۉ‬ఇ๕้ǈ‫ۉ‬ᇸਸ࠲܏ਸă CLK1 0 0 1 MR5 MR4 0 CHOP-DIS MR3 ዁ MR0 FS3 ዁ FS0 CLK0 0 1 0 ADC้ዓᇸ 64 kHzాև้ዓăCLKᆅগփ༵ࠃాև้ዓă 64 kHzాև้ዓăCLKᆅগ༵ࠃُాև้ዓă 64 kHzྔև้ዓăྔև้ዓ੗ᅜਏᆶ45:55‫ڦ‬቞੣Բ)֖९रຍࡀ߭ྔև้ዓև‫*ݴ‬ă 1 1 ྔև้ዓăྔև้ዓሞAD7794/AD7795ా2‫ݴ‬ೕă ՂႷॽُ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ُ࿋ᆩઠ๑ీई্ᆩቘհăฉ‫้ۉ‬ईް࿋ኮࢫǈCHOP-DISൣ0ǈቘհ๑ీăCHOP-DISዃ1้ǈቘհ্ᆩă ُ࿋ᇑAMP-CM࿋ᅃཞ๑ᆩăቘհ্ᆩ้ǈAMP-CM࿋ᆌዃ1ăኄࣷ၌዆ADC੗ᅜ๑ᆩ‫ࠌڦ‬ఇ‫ۉ‬უǈ‫ڍ‬ ኱ୁࠌఇᅞ዆Ⴀీփࣷူইă ୳հഗ߸ႎ໏୲჋ስ࿋)֖९՗19*ă Rev. D | Page 19 of 36 AD7794/AD7795 ՗18. ߾ፕఇ๕ MD2 0 MD1 0 MD0 0 ఇ๕ ૶Ⴤገ࣑ఇ๕(ఐණ)ă ሞ૶Ⴤገ࣑ఇ๕ူǈADC૶Ⴤኴႜገ࣑ǈժॽ঳ࡕዃᇀຕ਍स٪ഗዐăRDYሞྜ‫ׯ‬ገ้࣑Վྺ‫ۉگ‬ೝăᆩ ࢽ੗ᅜॽഗॲዃᇀ૶Ⴤ‫܁‬ൽఇ๕ူǈᅜ‫܁‬ൽኄၵገ࣑঳ࡕǗ‫ړ‬แेSCLKஞ؋้ǈገ࣑঳ࡕጲ‫ۯ‬ዃᇀDOUT ၍ୟฉăଷᅃ‫ݛ‬௬ǈᆩࢽ੗ᅜႀ෇ཚ႑स٪ഗǈኸ๖ADC๼‫؜‬ገ࣑঳ࡕăฉ‫ۉ‬ኮࢫǈঢ়ࡗ2/fADC)ቘհ๑ీ ้*ई1/fADC)ቘհ্ᆩ้*‫้ڦ‬क़༵ࠃ‫ڼ‬ᅃ߲ገ࣑঳ࡕăࢫჄገ࣑঳ࡕᅜfADC‫ڦ‬ೕ୲༵ࠃǈ࿮ஃቘհ๑ీᇑ‫ޏ‬ă 0 0 1 ‫ْڇ‬ገ࣑ఇ๕ ჋ስ‫ْڇ‬ገ࣑ఇ๕้ǈADCฉ‫ۉ‬ժኴႜ‫ْڇ‬ገ࣑ăና‫ږ‬ഗฉ‫ॺࢅۉ‬૬Ⴔᄲ1 msă඗ࢫǈADCኴႜገ࣑ǈႴᄲ 2/fADC)ቘհ๑ీ้*ई1/fADC)ቘհ্ᆩ้*‫้ڦ‬क़ăገ࣑঳ࡕዃᇀຕ਍स٪ഗዐǈRDYՎྺ‫ۉگ‬ೝǈ඗ࢫADC‫࣮ݓ‬ ู‫ۉ‬ఇ๕ăሞຕ਍ԥ‫܁‬ൽईኴႜଷᅃْገ࣑ኮമǈገ࣑঳ࡕॽᅃ኱ԥԍ٪ሞຕ਍स٪ഗዐǈժ൐RDYԍ‫׼‬ᆶ ၳ)‫ۉگ‬ೝ*ă 0 1 0 ੣ှఇ๕ă ሞ੣ှఇ๕ူǈADC୳հഗࢅۙ዆ഗԍ‫ް׼‬࿋ጒༀǈ‫ڍ‬ධ඗༵ࠃۙ዆ഗ้ዓă 0 1 1 1 0 0 ู‫ۉ‬ఇ๕ă ሞู‫ۉ‬ఇ๕ူǈAD7794/AD7795໯ᆶ‫ۉ‬ୟ‫܏࠲ۼ‬ǈԈઔ‫ୁۉ‬ᇸĂ‫ۉ‬ᇸਸ࠲Ăභ܏‫ୁۉ‬Ăೋዃ‫ۉ‬უ݀ิഗࢅ ้ዓ‫ۉ‬ୟă ాևଭ‫ۉ‬ೝၯጚă ాև‫܌‬ୟጲ‫૶ۯ‬থ‫ڟ‬๑ీ‫ڦ‬ཚ‫ڢ‬ăྜ‫ׯ‬ၯጚႴᄲଇ߲ገ࣑ዜ೺(ቘհ๑ీ้)ईᅃ߲ገ࣑ዜ೺(ቘհ্ᆩ้)ă RDYሞၯጚഔ‫้ۯ‬Վྺߛ‫ۉ‬ೝǈሞၯጚྜ‫ۉگް้࣬ׯ‬ೝăၯጚኮࢫǈADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕ ዃᇀ჋ۨཚ‫ڦڢ‬฿ۙस٪ഗዐă 1 0 1 ాև஢ଉ‫ײ‬ၯጚă ‫ܔ‬ᇀ޿ၯጚǈ஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫૶ۯ‬থ‫ڟ‬჋ۨ‫ڦ‬ఇె๼෇ă ‫ړ‬ሺᅮྺ1้ǈྜ‫ׯ‬ၯጚႴᄲଇ߲ገ࣑ዜ೺(ቘհ๑ీ้)ईᅃ߲ገ࣑ዜ೺(ቘհ্ᆩ้)ă ‫ܔ‬ᇀ߸ߛሺᅮǈኴႜ஢ଉ‫ײ‬ၯጚႴᄲ຺߲ገ࣑ዜ೺(ቘհ๑ీ้)ईଇ߲ገ࣑ዜ೺(ቘհ্ᆩ้)ă RDYሞၯጚഔ‫้ۯ‬Վྺߛ‫ۉ‬ೝǈሞၯጚྜ‫ۉگް้࣬ׯ‬ೝăၯጚኮࢫǈADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣ ຕዃᇀ჋ۨཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă ‫ړ‬ሺᅮྺ128้ǈ࿮݆ኴႜాև஢ଉ‫ײ‬ၯጚă‫ܔ‬ᇀ޿ሺᅮยዃǈ੗ᅜኴႜဣཥ஢ଉ‫ײ‬ၯጚă௅ْ߸߀ᅃ߲ ཚ‫ڦڢ‬ሺᅮ้ǈ‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚǈᅜ๑஢ଉ‫ײ‬ဃֶፌၭă 1 1 0 ဣཥଭ‫ۉ‬ೝၯጚă ᆩࢽᆌॽဣཥଭ‫ۉ‬ೝ๼෇૶থ‫ڟ‬CH2࿋ĂCH1࿋ࢅCH0࿋໯჋ስ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগăྜ‫ׯ‬ဣཥ฿ۙၯጚႴᄲଇ ߲ገ࣑ዜ೺(ቘհ๑ీ้)ईᅃ߲ገ࣑ዜ೺(ቘհ্ᆩ้)ăRDYሞၯጚഔ‫้ۯ‬Վྺߛ‫ۉ‬ೝǈሞၯጚྜ‫گް้࣬ׯ‬ ‫ۉ‬ೝăၯጚኮࢫǈADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕዃᇀ჋ۨཚ‫ڦڢ‬฿ۙस٪ഗዐă 1 1 1 ဣཥ஢ଉ‫ײ‬ၯጚă ᆩࢽᆌॽဣཥ஢ଉ‫ײ‬๼෇૶থ‫ڟ‬CH2࿋ĂCH1࿋ࢅCH0࿋໯჋ስ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগă ྜ‫ׯ‬ၯጚႴᄲଇ߲ገ࣑ዜ೺(ቘհ๑ీ้)ईᅃ߲ገ࣑ዜ೺(ቘհ্ᆩ้)ă ሞၯጚഔ‫้ۯ‬Վྺߛ‫ۉ‬ೝǈRDYሞၯ ጚྜ‫ۉگް้࣬ׯ‬ೝăၯጚኮࢫǈADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕዃᇀ჋ۨཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă Rev. D | Page 20 of 36 AD7794/AD7795 ՗19. ੗ᆩ߸ႎ໏୲(ቘհ๑ీ)1 FS3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 FS2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 fADC (Hz) x 470 242 123 62 50 39 33.2 19.6 16.7 16.7 12.5 10 8.33 6.25 4.17 TSETTLE (ms) x 4 8 16 32 40 48 60 101 120 120 160 200 240 320 480 50 Hz/60 Hzᅞ዆(ాև้ዓ) 90 dB (ৈ60 Hz) 80 dB (ৈ60 Hz) 65 dB (50 Hz ࢅ 60 Hz) 66 dB (50 Hz ࢅ 60 Hz) 69 dB (50 Hz ࢅ 60 Hz) 70 dB (50 Hz ࢅ 60 Hz) 72 dB (50 Hz ࢅ 60 Hz) 74 dB (50 Hz ࢅ 60 Hz) ቘհ্ᆩ้ǈ߸ႎ໏୲ԍ‫׼‬փՎǈ‫ڍ‬௅߲߸ႎ໏୲‫ॺڦ‬૬้क़໫‫܌‬2Ԡă16.7 Hz߸ႎ໏୲้50 Hz/60 Hzᅞ዆ူইྺ65 dBă Rev. D | Page 21 of 36 AD7794/AD7795 ದዃस٪ഗ ՗ 20ଚ ‫ ؜‬କ ದ ዃ स ٪ ഗ ߳ ࿋ ‫ ڦ‬ఁ ‫ ࢅ ׬‬ᅪ ᅭ ă CON0዁ CON15՗๖࿋‫ڦ‬࿋ዃǈCONຫ௽ኄၵ࿋ຌᇀದዃस٪ഗă CON15๟ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬ /ް࿋ఐණጒༀă RS2, RS1, RS0 = 0, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x0710 ದዃस٪ഗ๟ᅃ߲16࿋‫܁‬ႀस٪ഗǈᆩઠದዃADC‫ڇڦ‬ट ႠईມटႠఇ๕ǈ๑ీई্ᆩ࣐؋ഗǈ๑ీई্ᆩභ܏‫ۉ‬ ୁǈ჋ስሺᅮǈᅜत჋ስఇె๼෇ཚ‫ڢ‬ă 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 REFSEL1(0) CON6 REFSEL0(0) CON5 REF_DET(0) CON4 BUF(1) CON3 CH3(0) CON2 CH2(0) CON1 CH1(0) CON0 CH0(0) ՗20. ದዃस٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ࿋ࡽ CON15 ዁ CON14 ఁ‫׬‬ VBIAS1 ዁ VBIAS0 ௮ຎ ೋዃ‫ۉ‬უ݀ิഗ๑ీăఇె๼෇‫܋޶ڦ‬੗ೋዃ‫ڟ‬AVDD/2ăኄၵ࿋ᇑBOOST࿋ᅃཞ๑ᆩă VBIAS1 VBIAS0 ೋዃ‫ۉ‬უ 0 0 ೋዃ‫ۉ‬უ݀ิഗ্ᆩ 0 1 ೋዃ‫ۉ‬უ݀ิഗ૶থ‫ڟ‬AIN1(−) 1 0 ೋዃ‫ۉ‬უ݀ิഗ૶থ‫ڟ‬AIN2(−) 1 1 ೋዃ‫ۉ‬უ݀ิഗ૶থ‫ڟ‬AIN3(−) භ܏‫ୁۉ‬๑ీ࿋ăՂႷॽُ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕăُ࿋ዃ1ॽ๑ీ႑ࡽୟ০ዐ‫ڦ‬100 nA‫ୁۉ‬ ᇸăBO = 0ॽ্ᆩභ܏‫ୁۉ‬ăৈ‫࣐ړ‬؋ഗईᅏ՗‫ٷݣ‬ഗྺᆶၳጒༀ้ǈ֍ీ๑ీභ܏‫ୁۉ‬ă CON13 BO CON12 U/B ມटႠ/‫ڇ‬टႠ࿋ăዃ1ॽ๑ీ‫ڇ‬टႠՊஓǈनଭֶ‫ݴ‬๼෇ׂิ0x000000๼‫؜‬ǈ஢ଉ‫ݴֶײ‬๼෇ׂิ 0xFFFFFF๼‫؜‬ăൣ0ॽ๑ీມटႠՊஓă޶஢ଉ‫ݴֶײ‬๼෇ׂิ0x000000๼‫؜‬ஓǈଭֶ‫ݴ‬๼෇ׂิ 0x800000๼‫؜‬ஓǈኟ஢ଉ‫ݴֶײ‬๼෇ׂิ0xFFFFFF๼‫؜‬ஓă CON11 BOOST ُ࿋ᇑVBIAS1ࢅVBIAS0࿋ᅃཞ๑ᆩăዃ1้ǈೋዃ‫ۉ‬უ݀ิഗ‫ߛ༵ࡼࠀڦ‬ǈฉ‫้ۉ‬क़໫‫܌‬ă CON10 ዁ CON8 G2 ዁ G0 ሺᅮ჋ስ࿋ă ᆯᆩࢽႀ෇ǈᅜ჋ስူଚADC๼෇‫ྷݔ‬ኮᅃǖ G2 G1 G0 ሺᅮ ADC๼෇‫)ྷݔ‬2.5 Vएጚ‫ۉ‬უ* 0 0 0 1)ᅏ՗‫ٷݣ‬ഗփᆩǅ2.5 V 0 CON7 ዁ CON6 REFSEL1/REFSEL0 0 1 2)ᅏ՗‫ٷݣ‬ഗփᆩǅ1.25 V 0 1 0 4 625 mV 0 1 1 8 312.5 mV 1 0 0 16 156.2 mV 1 0 1 32 78.125 mV 1 1 0 64 39.06 mV 1 1 1 128 19.53 mV एጚ‫ۉ‬უ჋ስ࿋ă ኄၵ࿋ᆩઠ჋ስADC‫ڦ‬एጚ‫ۉ‬უᇸă REFSEL1 REFSEL0 एጚ‫ۉ‬უᇸ 0 0 ሞREFIN1(+)ᇑREFIN1(−)ኮक़แे‫ྔڦ‬ևएጚ‫ۉ‬უᇸ 0 1 ሞREFIN1(+)ᇑREFIN2(−)ኮक़แे‫ྔڦ‬ևएጚ‫ۉ‬უᇸ 1 0 1.17 Vాևएጚ‫ۉ‬უᇸ 1 1 ԍା Rev. D | Page 22 of 36 AD7794/AD7795 ! ࿋ࡽ CON5 ఁ‫׬‬ REF_DET ௮ຎ ๑ీएጚ‫ۉ‬უॠ֪ࠀీăዃ1้ǈසࡕADC໯ᆩ‫ྔڦ‬ևएጚ‫ۉ‬უᇸਸୟईၭᇀ0.5 Vǈጒༀस٪ഗዐ‫ڦ‬ NOXREF࿋ॽߴ‫༵؜‬๖ăൣ0้ǈएጚ‫ۉ‬უॠ֪ࠀీ্ᆩă CON4 BUF ದዃADCྺ࣐؋ई࿮࣐؋߾ፕఇ๕ăൣ0้ǈADCᅜ࿮࣐؋ఇ๕߾ፕǈ੗ই‫گ‬ഗॲ‫ࡼࠀڦ‬ăዃ1้ǈ ADCᅜ࣐؋ఇ๕߾ፕǈᆩࢽ੗ᅜॽᇸፆੇዃᇀമ‫܋‬ǈܸփࣷߴဣཥ‫ټ‬ઠሺᅮဃֶă‫ܔ‬ᇀሺᅮ1ࢅ2ǈ ੗ᅜ๑ీई্ᆩ࣐؋ഗă‫ܔ‬ᇀ߸ߛሺᅮǈ࣐؋ഗጲ‫ۯ‬๑ీă࣐؋ഗ্ᆩ้ǈఇె๼෇ᆅগฉ‫ۉڦ‬უ ੗ᅜྺGNDᅜူ30 mV዁AVDDᅜฉ30 mVă࣐؋ഗ๑ీ้ǈ໲ႴᄲᅃၵᇧଉǗᅺُǈඪࢆ๼෇ᆅগฉ ‫ۉڦ‬უՂႷሞ‫ۉ‬ᇸࡆ‫ڦ‬100 mV‫ాྷݔ‬ă CON3 ዁ CON0 CH3 ዁ CH0 ཚ‫ڢ‬჋ስ࿋ă ᆯᆩࢽႀ෇ǈᅜ჋ስADC‫ڦ‬ᆶၳఇె๼෇ཚ‫ڢ‬ǖ CH3 CH2 CH1 CH0 ཚ‫ڢ‬ 0 0 0 0 AIN1(+)/AIN1(−) 0 0 0 1 AIN2(+)/AIN2(−) 0 0 1 0 AIN3(+)/AIN3(−) 0 0 1 1 AIN4(+)/AIN4(−) 0 1 0 0 AIN5(+)/AIN5(−) 0 1 0 1 AIN6(+)/AIN6(−) 0 1 1 0 ࿒‫ߌد܈‬ഗ ၯጚ‫ܔ‬ 0 1 2 3 3 3 ጲ‫ۯ‬჋ስ1.17 Vాևएጚ‫ۉ‬უǈժॽሺᅮยྺ1 0 1 1 1 AVDD ॔੦ഗ ጲ‫ۯ‬჋ስ1.17 Vాևएጚ‫ۉ‬უǈժॽሺᅮยྺ1/6 1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 0 1 0 0 1 1 0 1 1 0 1 0 1 AIN1(−)/AIN1(−) ԍା ԍା ԍା ԍା ԍା ԍା 0 Rev. D | Page 23 of 36 AD7794/AD7795 ຕ਍स٪ഗ JPस٪ഗ RS2, RS1, RS0 = 0, 1, 1Ǘ ฉ‫ۉ‬/ް࿋ = 0x0000(AD7795), 0x000000 (AD7794) ُຕ਍स٪ഗ٪‫ئ‬ADC‫ڦ‬ገ࣑঳ࡕă໲๟ᅃ߲ኻ‫܁‬स٪ ഗăྜ‫ُܔׯ‬स٪ഗ‫֡܁ڦ‬ፕࢫǈ RDY࿋/ᆅগዃ1ă RS2, RS1, RS0 = 1, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x00 IOस٪ഗ๟ᅃ߲8࿋‫܁‬ႀस٪ഗǈᆩઠ๑ీघ૤‫ୁۉ‬ժ჋ ስघ૤‫ڦୁۉ‬ኵă ՗21ଚ‫؜‬କIOस٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭăIO0዁IO7՗๖࿋ ‫ڦ‬࿋ዃǈIOຫ௽ኄၵ࿋ຌᇀIOस٪ഗăIO7՗๖ຕ਍ୁ‫ڦ‬ ‫ڼ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă IDस٪ഗ RS2, RS1, RS0 = 1, 0, 0Ǘฉ‫ۉ‬/ް࿋ = 0xXF IDस٪ഗ٪‫ئ‬AD7794/AD7795‫๎ڦ‬՚ࡽă໲๟ᅃ߲ኻ‫܁‬स ٪ഗă IO7 0(0) IO6 IOEN(0) IO5 IO2DAT(0) IO4 IO1DAT(0) IO3 IEXCDIR1(0) IO2 IEXCDIR0(0) IO1 IEXCEN1(0) IO0 IEXCEN0(0) ՗21. IOस٪ഗ߳࿋‫ڦ‬ఁ‫ࢅ׬‬ᅪᅭ ࿋ࡽ IO7 IO6 ఁ‫׬‬ 0 IOEN IO5 ዁ IO4 IO2DAT/IO1DAT IO3 ዁ IO2 IEXCDIR1 ዁ IEXCDIR0 IO3 ዁ IO2 IEXCEN1 ዁ IEXCEN0 ௮ຎ ՂႷॽُ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă ॽᆅগAIN6(+)/P1ࢅᆅগAIN6(−)/P2ದዃྺఇె๼෇ᆅগईຕጴ๼‫؜‬ᆅগăُ࿋ዃ1้ǈኄၵᆅগ ದዃྺຕጴ๼‫؜‬ᆅগP1ࢅຕጴ๼‫؜‬ᆅগP2ăُ࿋ൣ0้ǈኄၵᆅগದዃྺఇె๼෇ᆅগAIN6(+)ࢅ ఇె๼෇ᆅগAIN6(−)ă P2/P1ຕ਍ăIOENዃ1้ǈຕጴ๼‫؜‬ᆅগP1ࢅຕጴ๼‫؜‬ᆅগP2‫ڦ‬ຕ਍ႀ෇࿋IO2DATࢅ࿋IO1DATă ‫ୁۉ‬ᇸ‫ݛ‬ၠ჋ስ࿋ă IEXCDIR1 IEXCDIR0 0 0 ‫ୁۉ‬ᇸ‫ݛ‬ၠ ‫ୁۉ‬ᇸIEXC1૶থ‫ڟ‬ᆅগIOUT1ă‫ୁۉ‬ᇸIEXC2૶থ‫ڟ‬ᆅগIOUT2ă 0 ‫ୁۉ‬ᇸIEXC1૶থ‫ڟ‬ᆅগIOUT2ă‫ୁۉ‬ᇸIEXC2૶থ‫ڟ‬ᆅগIOUT1ă 1 ଇ߲‫ୁۉ‬ᇸ਩૶থ‫ڟ‬ᆅগIOUT1ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้ǈ ֍ሎႹኄᄣยዃă 1 1 ଇ߲‫ୁۉ‬ᇸ਩૶থ‫ڟ‬ᆅগIOUT2ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้ǈ ֍ሎႹኄᄣยዃă ኄၵ࿋ᆩઠ๑ీࢅ্ᆩ‫ୁۉ‬ᇸă໲்࣏੗ᅜ჋ስघ૤‫ڦୁۉ‬ኵă 1 0 IEXCEN1 0 0 1 1 IEXCEN0 0 1 0 1 ‫ୁۉ‬ᇸኵ घ૤‫্ୁۉ‬ᆩ 10 μA 210 μA 1 mA Rev. D | Page 24 of 36 AD7794/AD7795 ฿ۙस٪ഗ ஢ଉ‫ײ‬स٪ഗ RS2, RS1, RS0 = 1, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x8000 (AD7795), 0x800000 (AD7794)) ฿ۙस٪ഗ๟ᅃ߲16࿋(AD7795)ई24࿋(AD7794)स٪ഗă ฿ۙस٪ഗԍ٪ADC‫ڦ‬฿ۙၯጚဣຕǈAD7794/AD7795‫ڦ‬ ฉ‫ްۉ‬࿋ኵ‫ݴ‬՚ྺ0x8000/0x800000ăAD7794/AD7795߳ᆶ ຺߲฿ۙस٪ഗăཚ‫ڢ‬AIN1዁ཚ‫ڢ‬AIN3ਏᆶጆᆩ฿ۙस ٪ഗǈܸཚ‫ڢ‬AIN4ĂAIN5ࢅAIN6ሶࠌᆩᅃ߲฿ۙस٪ ഗă߳स٪ഗ਩ྺ‫܁‬ႀस٪ഗăُस٪ഗᇑ၎࠲‫ڦ‬஢ଉ‫ײ‬ स٪ഗᅃཞ๑ᆩǈᅜࠓ‫ׯ‬स٪ഗ‫ܔ‬ăසࡕᆩࢽഔ‫ాۯ‬ևई ဣཥଭ‫ۉ‬ೝၯጚǈฉ‫ްۉ‬࿋ኵॽԥጲ‫߃ޮۯ‬ăႀ෇฿ۙस ٪ഗ้ǈAD7794/AD7795ՂႷ‫ت‬ᇀู‫ۉ‬ఇ๕ई੣ှఇ๕ă RS2, RS1, RS0 = 1, 1, 1Ǘฉ‫ۉ‬/ް࿋ = 0x5XXX (AD7795), 0x5XXX00 (AD7794) ஢ଉ‫ײ‬स٪ഗ๟ᅃ߲16࿋(AD7795)ई24࿋(AD7794)स٪ ഗă஢ଉ‫ײ‬स٪ഗԍ٪ADC‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕăAD7794/ AD7795߳ᆶ຺߲஢ଉ‫ײ‬स٪ഗăཚ‫ڢ‬AIN1ĂAIN2ࢅAIN3 ਏᆶጆᆩ஢ଉ‫ײ‬स٪ഗǈܸཚ‫ڢ‬AIN4ĂAIN5ࢅAIN6ሶࠌ ᆩᅃ߲स٪ഗă஢ଉ‫ײ‬स٪ഗྺ‫܁‬ႀस٪ഗăփࡗǈႀ෇ ஢ଉ‫ײ‬स٪ഗ้ǈADCՂႷ‫ت‬ᇀู‫ۉ‬ఇ๕ई੣ှఇ๕ăኄ ၵस٪ഗሞฉ‫้ۉ‬๑ᆩ߾‫׍‬ၯጚ‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕದዃ(ኴ ႜၯጚ้‫ڦ‬ሺᅮྺ1)Ǘᅺُǈ߳ഗॲਏᆶփཞ‫ڦ‬ఐණဣ ຕă჋ስాևएጚ‫ۉ‬უ้‫ڦ‬ဣຕᇑ჋ስྔևएጚ‫ۉ‬უ้‫ڦ‬ ဣຕփ၎ཞăසࡕᆩࢽഔ‫ాۯ‬ևईဣཥ஢ଉ‫ײ‬ၯጚǈईኁ ႀ෇஢ଉ‫ײ‬स٪ഗǈ޿ఐණኵॽԥጲ‫߃ޮۯ‬ă Rev. D | Page 25 of 36 AD7794/AD7795 ኄၵ߸ႎ໏୲ူǈ။հೕ୲ཞ้࿋ᇀ50 Hzࢅ60 Hz)९཮ 14*ă ADC‫ۉ‬ୟ႑တ ߁ຎ ߵ਍๼‫߸؜‬ႎ໏୲ǈAD7794/AD7795ࣷ๑ᆩ୼ᆶփཞ‫୳ڦ‬ հഗǈᅜՍᆫࣅ‫ܔ‬ଉࣅሯำࢅഗॲሯำ‫ڦ‬ᅞ዆ă‫߸ړ‬ႎ໏ ୲ྺ4.17 Hz዁12.5 Hz้ǈ๑ᆩSinc3୳հഗࢅ਩ኵ୳հഗă ‫߸ړ‬ႎ໏୲ྺ16.7 Hz዁39 Hz้ǈ๑ᆩႪኟSinc3୳հഗă ‫߸ړ‬ႎ໏୲‫ڪ‬ᇀ16.7 Hz้ǈُ୳հഗ༵ࠃ50 Hz/60 Hzཞ้ ᅞ዆ă‫߸ړ‬ႎ໏୲ྺ50 Hz዁242 Hz้ǈ๑ᆩSinc4୳հഗă ፌࢫǈ‫߸ړ‬ႎ໏୲‫ڪ‬ᇀ470 Hz้ǈ๑ᆩৈᆶओ‫୳ڦీࠀݴ‬ հഗă཮13዁཮16‫ݴ‬՚၂๖କቘհ๑ీఇ๕ူኍ‫ܔ‬ᅃၵ߸ ႎ໏୲‫ڦ‬փཞૌ႙୳հഗ‫ڦ‬ೕ୲ၚᆌ༬Ⴀăُఇ๕ူǈॺ ૬้क़ྺ߸ႎ໏୲‫ڦ‬2Ԡă཮17዁཮20၂๖କቘհ্ᆩఇ ๕ူ‫୳ڦ‬հഗၚᆌ༬Ⴀă AD7794/AD7795ྺ‫ࡼࠀگ‬ADCǈాዃΣ-Δۙ዆ഗĂ࣐؋ ഗĂएጚ‫ۉ‬უᇸĂᅏ՗‫ٷݣ‬ഗࢅೌాຕጴ୳հǈዷᄲᆩᇀ ֪ଉ੻‫ۯ‬ༀ‫ྷݔ‬Ă‫گ‬ೕ႑ࡽǈ૩සუ૰‫ߌد‬ഗĂ‫ۉ‬ጱ‫ࢅ׹‬ ࿒‫֪܈‬ଉᆌᆩዐ‫ڦ‬႑ࡽă ௅߲ഗॲ‫ۼ‬ᆶ6ୟֶ‫ݴ‬๼෇ǈ੗ᅜԥದዃྺ࣐؋ई࿮࣐؋ ఇ๕ăኄၵഗॲ૧ᆩ1.17 Vాևएጚ‫ۉ‬უᇸईྔևएጚ‫ۉ‬ უᇸ߾ፕă཮12၂๖କഗॲ߾ፕ໯Ⴔ‫ڦ‬एԨ૶থă AD7794/AD7795‫ڦ‬๼‫؜‬໏୲(fADC)๟ᆩࢽ੗Պ‫ڦײ‬ă՗19ଚ ‫؜‬କቘհ๑ీ้ඹႹ‫߸ڦ‬ႎ໏୲ᅜत‫ܔ‬ᆌ‫ॺڦ‬૬้क़ăቘ հ্ᆩ้ǈඹႹ‫߸ڦ‬ႎ໏୲ԍ‫׼‬փՎǈ‫ॺڍ‬૬้क़‫ڪ‬ᇀ 1/fADCă‫׉‬ఇᅞ዆๟ຕጴ୳հഗ‫ڦ‬ዷᄲࠀీă‫߸ړ‬ႎ໏୲ྺ 16.7 Hzई߸‫้گ‬ǈ50 Hz/60 Hzཞ้ᅞ዆ၳࡕፌॅǈᅺྺሞ VDD REFIN1(+) GND IN+ OUT– AD7794/AD7795 AIN1(+) AIN1(–) IN+ OUT– OUT+ AVDD VDD IN– OUT+ AIN2(+) AIN2(–) IN– AIN3(+) MUX BUF IN-AMP Σ-Δ ADC SERIAL INTERFACE AND LOGIC CONTROL DOUT/RDY DIN SCLK CS AIN3(–) GND REFIN2(+) VDD REFIN2(–) IOUT1 INTERNAL CLOCK DVDD REFIN1(–) PSW 04854-012 RCM GND CLK ཮12.एԨ૶থ཮ Rev. D | Page 26 of 36 AD7794/AD7795 0 0 –10 –20 –20 (dB) (dB) –40 –30 –60 –40 –80 0 20 40 60 80 –60 120 100 04854-020 04854-017 –100 –50 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 FREQUENCY (Hz) FREQUENCY (Hz) ཮13. ୳հഗၚᆌ(4.17 Hz߸ႎ໏୲ǈቘհ๑ీ) ཮16. ୳հഗၚᆌ(470 Hz߸ႎ໏୲ǈቘհ๑ీ) 0 –20 –20 –40 –40 –60 –80 –80 –100 04854-018 –60 0 20 40 60 80 100 120 140 160 180 –100 200 04854-021 (dB) (dB) 0 0 20 40 FREQUENCY (Hz) 60 80 100 120 FREQUENCY (Hz) ཮14. ୳հഗၚᆌ(16.7 Hz߸ႎ໏୲ǈቘհ๑ీǅ ཮17. ୳հഗၚᆌ(4.17 Hz߸ႎ໏୲ǈቘհ্ᆩǅ 0 –20 –20 –40 –40 –60 –80 –80 –100 04854-019 –60 0 500 1000 1500 2000 2500 –100 3000 FREQUENCY (Hz) 04854-022 (dB) (dB) 0 0 20 40 60 80 100 120 140 160 180 FREQUENCY (Hz) ཮15. ୳հഗၚᆌ(242 Hz߸ႎ໏୲ǈቘհ๑ీǅ ཮18. ୳հഗၚᆌ(16.7 Hz߸ႎ໏୲ǈቘհ্ᆩǅ Rev. D | Page 27 of 36 200 AD7794/AD7795 0 –20 (dB) –40 –60 –100 04854-023 –80 0 500 1000 1500 2000 2500 3000 FREQUENCY (Hz) ཮19. ୳հഗၚᆌ(242 Hz߸ႎ໏୲ǈቘհ্ᆩ) 0 –10 (dB) –20 –40 04854-024 –50 0 ཮3ࢅ཮4၂๖କᇑAD7794/AD7795৊ႜথ੨‫้ڦ‬Ⴞ཮ǈഄ ዐCSᆩᇀ঴ஓഗॲă཮3၂๖‫ܔ‬AD7794/AD7795‫ڦ‬๼‫؜‬ᅎ ࿋स٪ഗኴႜ‫֡܁‬ፕ‫้ڦ‬Ⴞǈ཮4၂๖‫ܔ‬๼෇ᅎ࿋स٪ഗ ኴႜႀ֡ፕ‫้ڦ‬Ⴞăन๑ሞ‫ڼ‬ᅃْ‫֡܁‬ፕኮࢫDOUT/RDY ၍ୟ‫ۉߛڟ࣮ݓ‬ೝǈᄺ੗ᅜ‫ْٗܠ‬ຕ਍स٪ഗዐ‫܁‬ൽ‫؜‬၎ ཞ‫ڦ‬ጴăփࡗǈՂႷඓԍሞူᅃ๼‫߸؜‬ႎ݀ิኮമǈኄၵ ‫֡܁‬ፕᅙྜ‫ׯ‬ă૶Ⴤ‫܁‬ൽఇ๕ူǈኻీٗຕ਍स٪ഗ‫܁‬ൽ ᅃْă ॽCSᇑ‫ۉگ‬ೝ၎૶้ǈ‫ز‬ႜথ੨੗ᅜሞෙ၍๕ఇ๕ူ߾ ፕăُ้ǈSCLKĂDINࢅDOUT/RDY၍ୟᆩઠᇑAD7794/ AD7795ཚ႑ă੗ᅜᆩጒༀस٪ഗዐ‫ڦ‬RDY࿋॔๫ገ࣑๟‫ޏ‬ ঳ຐăኄዖ‫ݛ‬ӄ๢ࢇᇑྲ੦዆ഗ৊ႜথ੨ăසࡕCSႴᄲᆩ ፕ঴ஓ႑ࡽǈ੗ᅜᆩ੨၍ׂิ޿႑ࡽă‫ܔ‬ᇀྲ੦዆ഗথ ੨ǈॺᅱSCLKሞຕ਍‫د‬๼ዐ‫ڦ‬੣ှ้ߛ‫ۉ‬ೝጒༀă –30 –60 ഗ ዐ ǈ DOUT/RDYሶ ᆩ ᇀ ٗ ೌ ా स ٪ ഗ ዐ इ ൽ ຕ ਍ ă SCLK๟ഗॲ‫زڦ‬ႜ้ዓ๼෇ǈ໯ᆶຕ਍‫د‬๼(࿮ஃ๟DIN ฉ ࣏ ๟ DOUT/RDYฉ )਩ ၎ ‫ ܔ‬ᇀ SCLK႑ ࡽ ৊ ႜ ă DOUT/RDYᆅগᄺ੗ᆩፕຕ਍৽Ⴣ႑ࡽǗ‫ړ‬๼‫؜‬स٪ഗዐ ᆶႎຕ਍ጴ੗ᆩ้ǈ޿၍ୟՎྺ‫ۉگ‬ೝă‫ܔ‬ຕ਍स٪ഗ‫ڦ‬ ‫֡܁‬ፕྜ‫้ׯ‬ǈ޿၍ୟް࿋ྺߛ‫ۉ‬ೝăຕ਍स٪ഗ߸ႎኮ മǈ޿၍ୟᄺࣷՎྺߛ‫ۉ‬ೝǈᅜ༵๖ُ้փᆌ‫܁‬ൽഗॲǈ ඓԍस٪ഗኟሞ߸ႎ้փࣷ݀ิຕ਍‫܁‬ൽ֡ፕă ᆩᇀ჋ስ ഗॲăሞ‫߲ܠ‬ഗॲᇑ‫ز‬ႜጺ၍၎૶‫ڦ‬ဣཥዐǈ੗ᅜᆩCS‫ܔ‬ AD7794/ AD7795৊ႜ঴ஓă 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 AD7794/AD7795੗ᅜሞCSᆩፕኡཞօ႑ࡽ‫ڦ‬൧઄ူ߾ፕă ኄዖ‫ݛ‬ӄ๢ᆩᇀDSPথ੨ăُ้ǈᆯᇀሞDSPዐǈCSᅃӯ ‫؜‬၄ሞSCLK‫ူڦ‬ইᄂኮࢫǈᅺُ‫ڼ‬ᅃ࿋(MSB)ࣷԥCSᆶၳ ‫ں‬ໃ‫؜‬ăኻᄲፏ๰้Ⴞຕᄲ൱ǈSCLKՍ੗ሞຕ਍ገ࣑ኮक़ ૶Ⴤሏႜă FREQUENCY (Hz) ཮20. ୳հഗၚᆌ(470 Hz߸ႎ໏୲ǈቘհ্ᆩ) ຕጴথ੨ සമ࿔‫ాೌڦ‬स٪ഗև‫ݴ‬໯ຎǈAD7794/AD7795‫ڦ‬੗Պ‫ײ‬ ࠀీᆯᅃဣଚೌాस٪ഗ੦዆ăຕ਍ཚࡗ‫ز‬ႜথ੨ႀ෇ኄ ၵस٪ഗăُথ੨࣏༵ࠃ‫ܔ‬ኄၵೌాस٪ഗ‫܁ڦ‬ൽ‫ݡ‬࿚ă ᇑഗॲ‫ڦ‬໯ᆶཚ႑਩ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ă ฉ‫ۉ‬ईް࿋ኮࢫǈഗॲ೺‫ܔځ‬ഄཚ႑स٪ഗኴႜႀ֡ፕă ႀ෇ُस٪ഗ‫ڦ‬ຕ਍ਦۨူᅃ߲֡ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ ፕǈᅜतُ‫֡܁‬ፕईႀ֡ፕ݀ิሞనᅃ߲स٪ഗฉăᅺ ُǈ‫ܔ‬ഄ໲स٪ഗ‫ڦ‬ႀ෇‫ݡ‬࿚๟ᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕ ਸ๔ǈ඗ࢫ๟‫ܔ‬჋ۨ‫ڦ‬स٪ഗኴႜႀ֡ፕă‫ܔ‬ഄ໲स٪ഗ ‫֡܁ڦ‬ፕ(჋ስ૶Ⴤ‫܁‬ൽఇ๕‫)ྔأ‬๟ᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ ֡ፕਸ๔ǈ඗ࢫ๟‫ܔ‬჋ۨ‫ڦ‬स٪ഗኴႜ‫֡܁‬ፕă ‫ܔ‬DIN๼෇ႀ෇ᅃ૶‫ز‬1ǈ੗ᅜ๑޿‫ز‬ႜথ੨ް࿋ăසࡕॽ இड1ႀ෇AD7794/AD7795၍ୟժ‫׼‬Ⴤ዁ณ32߲‫ز‬ႜ้ዓ ዜ೺ǈ޿‫ز‬ႜথ੨Սࣷް࿋ăසࡕ෉ॲ‫ٱ‬ဃईဣཥࠤቱ‫ڞ‬ ዂথ੨้Ⴞ‫ٱ‬ဃǈኄዖ‫ॽ݆ݛ‬੗ඓԍথ੨ް࿋‫ڟ‬ᅙኪጒ ༀăް࿋๑থ੨‫ܔځڪڟ࣮ݓ‬ཚ႑स٪ഗኴႜႀ֡ፕ‫ڦ‬ጒ ༀă޿֡ፕࣷॽ໯ᆶस٪ഗ‫ాڦ‬ඹް࿋‫ڟ‬ഄฉ‫ۉ‬ኵăް࿋ ኮࢫǈᆩࢽᆌ‫ځڪ‬500 μs֍ీ‫ݡ‬࿚‫ز‬ႜথ੨ă AD7794/AD7795੗ᅜದዃྺ૶Ⴤገ࣑ఇ๕ई‫ْڇ‬ገ࣑ఇ๕ (֖९཮21዁཮23)ă AD7794/AD7795‫زڦ‬ႜথ੨Ԉࡤ຺߲႑ࡽǖCSĂDINĂ SCLKĂDOUT/RDYăDIN၍ୟᆩᇀॽຕ਍‫د‬๼዁ೌాस٪ Rev. D | Page 28 of 36 AD7794/AD7795 CS DIN 0x08 0x200A 0x58 DATA 04854-014 DOUT/RDY SCLK ཮21.‫ْڇ‬ገ࣑ CS 0x58 0x58 DIN DATA DATA 04854-015 DOUT/RDY SCLK ཮22.૶Ⴤገ࣑ CS 0x5C DIN DATA DATA DATA 04854-016 DOUT/RDY SCLK ཮23.૶Ⴤ‫܁‬ൽ Rev. D | Page 29 of 36 AD7794/AD7795 ‫ْڇ‬ገ࣑ఇ๕ ૶Ⴤ‫܁‬ൽ ‫ْڇ‬ገ࣑ఇ๕ူǈAD7794/AD7795ሞଇْገ࣑ኮक़‫ت‬ᇀ࠲܏ ఇ๕ăॽఇ๕स٪ഗዐ‫ڦ‬MD2ĂMD1ࢅMD0‫ݴ‬՚ยዃྺ0Ă 0Ă1ǈՍ੗ഔ‫ْڇۯ‬ገ࣑ǈُ้AD7794/AD7795ॽฉ‫ۉ‬ǈ ኴႜ‫ْڇ‬ገ࣑ǈ඗ࢫ‫܏࠲࣮ݓ‬ఇ๕ăೌాና‫ږ‬ഗฉ‫ۉ‬Ⴔᄲ 1 msăገ࣑Ⴔᄲ2 × tADC‫้ڦ‬क़ăྜ‫ׯ‬ገ࣑ࢫǈDOUT/RDY Վྺ‫ۉگ‬ೝઠፕྺኸ๖ăٗຕ਍स٪ഗዐ‫܁‬ൽຕ਍ጴࢫǈ DOUT/RDYՎྺߛ‫ۉ‬ೝăසࡕCSྺ‫ۉگ‬ೝǈDOUT/RDY ॽԍ‫ۉߛ׼‬ೝǈ኱‫ڟ‬ᆼഔ‫ۯ‬ժྜ‫ׯ‬ᅃْገ࣑ྺኹăසࡕႴ ᄲǈन๑DOUT/RDYᅙՎྺߛ‫ۉ‬ೝǈᄺ੗ᅜ‫܁ْܠ‬ൽຕ਍ स٪ഗă ੗ᅜ‫ܔ‬AD7794/AD7795৊ႜದዃǈ๑‫ڥ‬௅ْገ࣑ྜ‫้ׯ‬ǈ ገ࣑঳ࡕࣷጲ‫ۯ‬ዃᇀDOUT/DRY၍ୟฉǈܸ࿮Ⴔ௅ْႀ෇ ཚ႑स٪ഗᅜ‫ݡ‬࿚ຕ਍ăॽ01011100ႀ෇ཚ႑स٪ഗࢫǈ ᆩࢽኻႴྺADC༵ࠃ๢‫ڦړ‬SCLKዜ೺ຕǈኄᄣ‫ړ‬ገ࣑ྜ ‫้ׯ‬ǈ24࿋ጴՍࣷጲ‫ۯ‬ዃᇀDOUT/DRY၍ୟฉăADCᆌದ ዃྺ૶Ⴤገ࣑ఇ๕ă ૶Ⴤገ࣑ఇ๕ ኄዖఇ๕ူǈຕ਍ኻీԥ‫܁‬ൽᅃْǈܸ൐ᆩࢽՂႷඓԍຕ ਍ጴ‫܁ڦ‬ൽራᇀူᅃገ࣑ྜ‫ׯ‬ăසࡕሞူᅃገ࣑ྜ‫ׯ‬ኮ മǈᆩࢽช࿄‫܁‬ൽገ࣑঳ࡕǈईኁྺAD7794/AD7795༵ࠃ ‫زڦ‬ႜ้ዓຕփፁᅜ‫܁‬ൽገ࣑ጴǈሶ‫ူړ‬ᅃገ࣑ྜ‫้ׯ‬ǈ ‫ز‬ႜ๼‫؜‬स٪ഗॽް࿋ǈႎገ࣑঳ࡕॽዃᇀ๼‫ز؜‬ႜस٪ ഗዐă ኄ๟ฉ‫ۉ‬ఐණఇ๕ăAD7794/AD7795૶Ⴤገ࣑ǈ௅ْገ࣑ ྜ‫้ׯ‬ǈጒༀस٪ഗዐ‫ڦ‬RDY࿋Վྺ‫گ‬ăසࡕCSྺ‫ۉگ‬ ೝǈሶ‫ړ‬ᅃْገ࣑ྜ‫้ׯ‬ǈDOUT/RDY၍ୟᄺࣷՎྺ‫ۉگ‬ ೝăැᄲ‫܁‬ൽገ࣑঳ࡕǈᆩࢽႴᄲႀ෇ཚ႑स٪ഗǈኸ๖ ူᅃ֡ፕྺ‫܁‬ൽຕ਍स٪ഗăᅃ‫ॽڋ‬SCLKஞ؋แेᇀ ADCǈຕጴገ࣑৽૬न‫؜‬၄ሞDOUT/RDYᆅগฉă‫܁‬ൽገ ࣑঳ࡕࢫǈDOUT/RDY࣮‫ۉߛڟ‬ೝăසႴᄲǈᆩࢽ੗ᅜ‫ܠ‬ ْ‫܁‬ൽ޿स٪ഗă‫ڍ‬๟ǈᆩࢽՂႷඓԍሞူᅃገ࣑ྜ‫ׯ‬ ้ǈփᄲ‫ܔ‬ຕ਍स٪ഗ৊ႜ‫ݡ‬࿚ǈ‫ޏ‬ሶǈႎ‫ڦ‬ገ࣑঳ࡕॽ ۪฿ă ‫ړ‬DOUT/DRYՎྺ‫ۉگ‬ೝǈ༵๖ገ࣑ᅙ঳ຐ้ǈՂႷྺ ADC༵ࠃፁࠕ‫ڦ‬SCLKዜ೺ຕă඗ࢫǈຕ਍ገ࣑঳ࡕՍࣷ ዃᇀDOUT/DRY၍ୟฉă‫܁‬ൽገ࣑঳ࡕࢫǈDOUT/DRY‫ݓ‬ ࣮‫ۉߛڟ‬ೝǈ኱‫ူڟ‬ᅃገ࣑঳ࡕ੗ᆩྺኹă ැᄲཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕ǈՂႷሞDRYᆅগྺ‫ۉگ‬ೝ้ॽኸ ସ01011000ႀ෇ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူǈADCࣷ ॔੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬ǈᅜՍీথ๭ኸସᅜཽ‫૶؜‬Ⴤ‫܁‬ൽ ఇ๕ăُྔǈසࡕDINฉ‫؜‬၄32߲૶Ⴤ1ǈADCॽް࿋ăᅺ ُǈሞ૶Ⴤ‫܁‬ൽఇ๕ူǈDINᆌԍ‫ۉگ׼‬ೝǈ኱‫ڟ‬ᆶኸସ ॽᄲႀ෇ഗॲă Rev. D | Page 30 of 36 AD7794/AD7795 ‫ۉ‬ୟ௮ຎ ఇె๼෇ཚ‫ڢ‬ AD7794/AD7795ᆶ6ֶ߲‫ݴ‬ఇె๼෇ཚ‫ڢ‬ă‫ړ‬ഗॲᅜ࣐؋ ఇ๕߾ፕ้ǈኄၵཚ‫૶ڢ‬থ‫࣐ాೌڟ‬؋‫ٷݣ‬ഗăሞ࿮࣐؋ ఇ๕ူǈኄၵཚ‫ڢ‬኱থ૶‫ۙڟ‬዆ഗăሞ࣐؋ఇ๕ူ(ದዃस ٪ഗዐ‫ڦ‬BUF࿋ยዃྺ1)ǈ๼෇ཚ‫ڢ‬ઍ෇࣐؋‫ٷݣ‬ഗ‫ߛڦ‬ ፆੇ๼෇पăᅺُǈ๼෇‫ࠕీ܋‬ఱ๴ড‫ڦٷ‬ᇸፆੇǈ๢ࢇ ᇑྔևፆႠ‫ߌد‬ഗ኱থ၎૶ǈ૩සᆌՎऺई‫ۉ‬ፆ๕࿒‫܈‬ॠ ֪ഗ(RTD)‫ڪ‬ă ‫ړ‬BUF = 0้ǈഗॲᅜ࿮࣐؋ఇ๕߾ፕăኄॽ‫ڞ‬ዂডߛ‫ڦ‬ఇ ె๼෇‫ୁۉ‬ă൩ጀᅪǈ޿࿮࣐؋๼෇ୟ০‫ܔ‬ൻ‫ۯ‬ᇸ‫װ‬၄‫؜‬ ‫ۯ‬ༀ‫޶ڦ‬ሜăᅺُǈ๼෇ᆅগฉ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీࣷ ᆅഐሺᅮဃֶǈਏ༹ൽਦᇀൻ‫ۯ‬ADC๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼‫؜‬ ፆੇă՗22၂๖କྺሞ20࿋‫ݴ‬Ր୲຤ೝ้փዂᆅ෇ሺᅮဃ ֶǈ࿮࣐؋ఇ๕ူྔև‫ۉ‬ፆ/‫ۉ‬ඹ‫ڦ‬ඹႹኵă ՗22. 20࿋้࿮ሺᅮဃֶ‫ྔڦ‬ևR-Cፇࢇ ‫ۉ‬ඹ(pF) 50 100 500 1000 5000 ‫ۉ‬ፆ(Ω) 9k 6k 1.5 k 900 200 ᅏ՗‫ٷݣ‬ഗ ఇె๼෇႑ࡽ‫ٷݣ‬1Ԡई2Ԡǈ๟ሞAD7794/AD7795ాཚࡗ ຕጴ‫ݛ‬๕ํ၄ă‫ڍ‬๟ǈ‫ړ‬ሺᅮྺ4ई߸ߛ้ǈ࣐؋ഗ๼‫؜‬ ॽแेᇀೌాᅏ՗‫ٷݣ‬ഗ‫ڦ‬๼෇‫܋‬ă޿‫گ‬ሯำᅏ՗‫ٷݣ‬ഗ ‫ڦ‬٪ሞᅪ࿆ጣၭ‫ޗ‬ኵ႑ࡽ੗ᅜሞAD7794/AD7795ా‫ٷݣ‬ǈ ཞ้ධ඗ԍ‫؜׼‬෥‫ڦ‬ሯำႠీă૩සǈ‫ړ‬ሺᅮยዃྺ64 ้ǈ਩‫ߵݛ‬ሯำ‫ۆ‬႙ኵྺ40 nVǈኄ၎‫ړ‬ᇀ21࿋ᆶၳ‫ݴ‬Ր୲ ई18.5࿋‫ރރ‬ኵ‫ݴ‬Ր୲ă ૧ᆩದዃस٪ഗዐ‫ڦ‬G2࿋዁G0࿋ǈ੗ᅜॽAD7794/AD7795 ‫ڦ‬ሺᅮยዃྺ1Ă2Ă4Ă8Ă16Ă32Ă64ई128ăᅺُǈ ֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ้ǈ‫ڇ‬टႠ‫ྺྷݔ‬0mV-20mV዁ 0V-2.5VǈມटႠ‫ྷݔ‬ሶྺ±20 mV዁±2.5 Vă‫ړ‬ᅏ՗‫ٷݣ‬ഗ ᆶၳ้)ሺᅮ ≥ 4*ǈሞቘհ๑ీ‫ڦ‬൧઄ူǈࠌఇ‫ۉ‬უ((AIN (+) + AIN(−))/2)ՂႷ‫ٷ‬ᇀई‫ڪ‬ᇀ0.5 Văසࡕቘհ্ᆩǈժ ൐AMP-CM࿋ዃ1ᅜ‫ݞ‬ኹࠌఇᅞ዆ႠీူইǈሶඹႹ‫ࠌڦ‬ ఇ‫ۉ‬უ၌ᇀᅜူଇ߲ኵኮक़ǖ 0.2 + (Gain/2 × (AIN(+) − AIN(−))) ࢅ AVDD − 0.2 − (Gain/2 × (AIN(+) − AIN(−))) ৈ‫ړ‬ሺᅮྺ1ई2้ǈAD7794/AD7795֍ీᅜ࿮࣐؋ఇ๕߾ ፕă‫ړ‬ሺᅮ߸ߛ้ǈ࣐؋ഗጲ‫ۯ‬๑ీă࣐؋ఇ๕ူǈਨ‫ܔ‬ ๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 100 mV዁AVDD – 100 mVኮक़ă‫ړ‬ ሺᅮยྺ4ई߸ߛ้ǈᅏ՗‫ٷݣ‬ഗ๑ీă‫ړ‬ᅏ՗‫ٷݣ‬ഗᆶ ၳ้ǈਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 300 mV዁AVDD – 1.1 V ኮक़ăยዃࠌఇ‫ۉ‬უ้ՂႷၭ႐ǈඓԍփᄲ‫ࡗג‬ኄၵ၌ ኵă‫ޏ‬ሶǈ၍Ⴀ‫ࢅ܈‬ሯำႠీࣷူইă ࿮࣐؋ఇ๕ူǈਨ‫ܔ‬๼෇‫ۉ‬უԈࡤGND – 30 mV዁AVDD + 30 mVኮक़‫ۉڦ‬უă޶ਨ‫ܔ‬๼෇‫ۉ‬უ၌ኵྺ॔੦၎‫ܔ‬ᇀGND ‫ڦ‬ኈມटႠၭ႑ࡽ༵ࠃକཉॲă සࡕAD7794/AD7795֑ᆩኵᇑAVDD၎‫ྔڦڪ‬ևएጚ‫ۉ‬უ ᇸǈሶሞᅏ՗‫ٷݣ‬ഗᆶၳ‫ڦ‬൧઄ူǈྺକኟ‫߾׉‬ፕǈఇె ๼෇႑ࡽՂႷփ‫ࡗג‬VREF/ሺᅮ‫ڦ‬90%ă ມटႠ/‫ڇ‬टႠದዃ AD7794/AD7795‫ڦ‬ఇె๼෇‫܋‬੗ᅜথ๴‫ڇ‬टႠईມटႠ๼ ෇‫ۉ‬უ‫ྷݔ‬ăມटႠ๼෇‫ྷݔ‬ժփ՗๖ഗॲ੗ᅜఱ๴၎‫ܔ‬ ᇀဣཥGND‫ۉ޶ڦ‬უăAIN(+)๼෇‫ڦ܋‬ມटႠࢅ‫ڇ‬टႠ႑ ࡽᅜAIN(−)๼෇‫ۉڦ܋‬უྺएጚă૩සǈසࡕAIN(−)ྺ 2.5 VǈADCದዃྺ‫ڇ‬टႠఇ๕ǈժ൐ሺᅮྺ1ǈሶAIN(+) ᆅগ‫ڦ‬๼෇‫ۉ‬უ‫ྺྷݔ‬2.5 V዁5 Vă සࡕADCದዃྺມटႠఇ๕ǈሶAIN(+)๼෇‫ڦ܋‬ఇె๼෇ ‫ྺྷݔ‬0 V዁5 VăມटႠ/‫ڇ‬टႠ჋ၜ੗ཚࡗ‫ܔ‬ದዃस٪ഗ ዐ‫ڦ‬U/B࿋৊ႜՊ‫ײ‬ઠ჋ስă Rev. D | Page 31 of 36 AD7794/AD7795 ຕ਍๼‫؜‬Պஓ घ૤‫ୁۉ‬ ‫ړ‬ADCದዃྺ‫ڇ‬टႠ߾ፕఇ๕้ǈ๼‫؜‬ஓྺܾ৊዆ᇱஓǈ ଭֶ‫ݴ‬๼෇‫ۉ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ00...00ǈዐक़‫ۉ‬ೝ‫ۉ‬უ‫ܔ‬ᆌ‫ڦ‬ ஓྺ100...000ǈ஢ଉ‫ײ‬๼෇‫ۉ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ111...111ăඪᅪ ఇె๼෇‫ۉ‬უ‫ڦ‬๼‫؜‬ஓ੗ᅜ՗๖ྺǖ AD7794/AD7795࣏ాዃଇ߲೅ದ‫ॲ෉ڦ‬੗ದዃ࢛ୁᇸǈഄ๼ ‫ୁۉ؜‬੗ཚࡗՊ‫ײ‬ยྺ10 μAĂ210 μAई1 mAăઠጲAVDD‫ڦ‬ ኄଇ߲ᇸ‫ୁۉ‬኱থໃ‫ڟ‬ഗॲ‫ڦ‬IOUT1ईIOUT2ᆅগăኄၵ ‫ୁۉ‬ᇸཚࡗIOस٪ഗዐ‫ڦ‬ದዃ࿋৊ႜ੦዆ă૧ᆩದዃ࿋੗ ᅜ๑ీ‫ୁۉ‬ᇸǈॽ‫ୁۉ‬ᇸ‫ڞ‬ၠIOUT1ईIOUT2ǈᅜत჋ስ ‫ୁۉ‬ኵăኄၵ‫ୁۉ‬ᇸ੗ᅜᆩઠघ૤ྔևፆႠ‫ൃۉ‬ईRTD‫د‬ ߌഗă Code = (2N × AIN × GAIN)/VREF ‫ړ‬ADCದዃྺມटႠ߾ፕఇ๕้ǈ๼‫؜‬ஓྺܾ৊዆ೋᅎ ஓǈ޶஢ଉ‫ۉײ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ000...000ǈଭֶ‫ݴ‬๼෇‫ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 100...000ǈ ኟ ஢ ଉ ‫ ײ‬๼ ෇ ‫ ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 111...111ăඪᅪఇె๼෇‫ۉ‬უ‫ڦ‬๼‫؜‬ஓ੗ᅜ՗๖ྺǖ Code = 2N-1 × [(AIN × GAIN/VREF) + 1] ഄዐǖ AINྺఇె๼෇‫ۉ‬უă GAINྺᅏ՗‫ٷݣ‬ഗሺᅮยዃǄ1዁128ǅă N = 24. භ܏‫ୁۉ‬ AD7794/AD7795ాዃଇ߲100 nA࢛ୁ݀ิഗǈᅃ߲༵ࠃٗ AVDD‫ڟ‬AIN(+)‫ڦ‬ᇸ‫ୁۉ‬ǈᅃ߲༵ࠃٗAIN(−)‫ڟ‬GND‫ڦ‬ဌ ‫ୁۉ‬ăኄၵ‫ୁۉ‬ൎ࣑዁჋ۨ‫ڦ‬ఇె๼෇‫ܔ‬ăኄଇ߲‫ୁۉ‬ई ਸई࠲ǈൽਦᇀದዃस٪ഗዐ‫ڦ‬භ܏‫ୁۉ‬๑ీ(BO)࿋ă‫׈‬ ๬ሞఇె๼෇ཚ‫ڢ‬ฉኴႜ֪ଉኮമǈ੗ᅜ๑ᆩኄၵ‫ୁۉ‬ઠ ඓණྔև‫ߌد‬ഗ๟‫ޏ‬ኟ‫߾׉‬ፕăথཚභ܏‫ࢫୁۉ‬ǈ‫ୁୁۉ‬ ෇ྔև‫ߌد‬ഗ‫ۉ‬ୟǈ඗ࢫՍ੗ሞఇె๼෇ཚ‫ڢ‬ฉ֪ଉ๼෇ ‫ۉ‬უăසࡕ֪‫ۉڦڥ‬უྺ஢ଉ‫ײ‬ǈᆩࢽႴᄲඓණྺࢆස ُă஢ଉ‫܁ײ‬ຕ੗ీᅪ࿆ጣമ‫ߌد܋‬ഗਸୟǈᄺ੗ీ๟മ ‫ߌد܋‬ഗࡗሜǈཚࡗ஢ଉ‫ײ‬๼‫؜‬՗၄‫؜‬ઠǗईኁඍณएጚ ‫ۉ‬უǈժ൐NOXREF࿋ᅙዃ1ǈ‫ڞ‬ዂຕ਍ഭ࿋ሞඇ1ă ‫ړ‬๼‫ྺ؜‬ඇ1้ǈᆩࢽႴᄲॠֱኄෙዖ൧઄ǈ඗ࢫፔ‫؜‬ಒ ܏ăසࡕ֪‫ۉڦڥ‬უྺ0 Vǈሶ੗ీ๟‫ߌد‬ഗ‫܌‬ୟăኟ‫߾׉‬ ፕ้ǈᆌॽ0ႀ෇ದዃस٪ഗዐ‫ڦ‬BO࿋ǈᅜ࠲Կኄၵභ܏ ‫ୁۉ‬ă‫ୁۉ‬ᇸ߾ፕሞᅃӯਨ‫ܔ‬๼෇‫ۉ‬უ‫ాྷݔ‬ǈ࣐؋ഗਸ ഔă ೋዃ‫ۉ‬უ݀ิഗ AD7794/AD7795ాዃᅃ߲ೋዃ‫ۉ‬უ݀ิഗă໲ॽ჋ۨ๼෇ ཚ ‫ ܋ ޶ ڦ ڢ‬ೋ ዃ ‫ ڟ‬AVDD/2ă ُ ࠀ ీ ሞ ๼ ෇ AIN1(−)዁ AIN3(−)ฉ੗ᆩă໲ሞඤ‫ۉ‬౾ᆌᆩዐ࢔ᆶᆩǈᅺྺ‫ړ‬ሺᅮ ‫ٷ‬ᇀ2้ǈඤ‫ۉ‬౾໯ׂิ‫ۉڦ‬უՂႷ၎‫ܔ‬ᇀగ߲኱ୁ‫ۉ‬უ ೋዃăೋዃኮ໯ᅜᆶՂᄲǈ๟ᅺྺᅏ՗‫ٷݣ‬ഗႴᄲᅃۨ‫ڦ‬ ᇧଉăසࡕுᆶᇧଉǈথৎGNDईAVDD‫ڦ‬႑ࡽॽփీ৛ ඓገ࣑ă ೋዃ‫ۉ‬უ݀ิഗᆯದዃस٪ഗዐ‫ڦ‬VBIAS1࿋ĂVBIAS0࿋ ࢅBOOST࿋ࠌཞ੦዆ăೋዃ‫ۉ‬უ݀ิഗ‫ڦ‬ฉ‫้ۉ‬क़ൽਦᇀ ޶ሜ‫ۉ‬ඹăྺକ๢ᆌডߛ‫޶ڦ‬ሜ‫ۉ‬ඹǈAD7794/AD7795ದ ᆶBOOST࿋ă‫ُړ‬࿋ዃ1้ǈೋዃ‫ۉ‬უ݀ิഗ‫༵ࡼࠀڦ‬ ߛǈฉ‫้ۉ‬क़ॽ‫ޗٷ‬໫‫܌‬ă཮11၂๖କBOOST‫ڪ‬ᇀ0ࢅ BOOST‫ڪ‬ᇀ1้ǈփཞ޶ሜ‫ۉ‬ඹူ‫ڦ‬ฉ‫้ۉ‬क़ă‫ړ‬ೋዃ‫ۉ‬ უ݀ิഗ๑ీ൐BOOST‫ڪ‬ᇀ0้ǈAD7794/AD7795‫ࡼࠀڦ‬ ༵ߛ40 μAă‫ړ‬BOOSTࠀీഔᆩ้ǈഗॲࠀࡼ༵ߛ250 μAă एጚ‫ۉ‬უ AD7794/AD7795ਏᆶഴ෇๕1.17 Vएጚ‫ۉ‬უᇸǈ੗ᅜᆩઠྺ ADC༵ࠃएጚ‫ۉ‬უǈ‫ړ‬඗ᄺ੗ᅜแेྔևएጚ‫ۉ‬უă޿ഴ ෇๕एጚ‫ۉ‬უᇸਏᆶ‫گ‬ሯำĂ‫گ‬࿒೏༬Ⴀǈ࿒೏‫ۆ‬႙ኵྺ 4 ppm/°Că‫ܔ‬ᇀྔևएጚ‫ۉ‬უཚ‫ڢ‬ǈADCਏᆶྜඇֶ‫ݴ‬๼෇ ీ૰ăُྔǈᆩࢽ੗ᅜٗଇዖྔևएጚ‫ۉ‬უ჋ၜዐ჋ስഄ ᅃ(REFIN1ईREFIN2)ă๑ᆩದዃस٪ഗዐ‫ڦ‬REFSEL1ࢅ REFSEL0࿋੗ᅜ჋ስAD7794/AD7795‫ڦ‬एጚ‫ۉ‬უᇸă‫ړ‬჋ ስాևएጚ‫ۉ‬უᇸ้ǈ໲ᇑۙ዆ഗాև၎૶(փሞREFINᆅ গฉ༵ࠃ)ă ኄၵֶ‫ݴ‬๼෇‫ࠌڦ‬ఇ‫ྺྷݔ‬GND዁AVDDăएጚ‫ۉ‬უ๼෇ ๟࿮࣐؋๕Ǘᅺُǈࡗ‫ڦٷ‬R-Cᇸፆੇࣷᆅ෇ሺᅮဃֶă Rev. D | Page 32 of 36 AD7794/AD7795 Ք‫׬‬एጚ‫ۉ‬უREFIN(REFIN(+) − REFIN(−))ྺ2.5 Vǈ‫ڍ‬ AD7794/AD7795੗ᅜ֑ᆩ0.1 V዁AVDD‫ڦాྷݔ‬एጚ‫ۉ‬უ߾ ፕăසࡕᆌᆩዐఇె๼෇‫ߌدڦ܋‬ഗ‫ڦ‬घ૤Ǆ‫ۉ‬უई‫ۉ‬ ୁǅᄺൻ‫ۯ‬ഗॲ‫ڦ‬एጚ‫ۉ‬უǈሶघ૤ᇸዐ‫گ‬ೕሯำ‫ڦ‬ᆖၚ ॽ‫ڥ‬ᅜၩ‫أ‬ǈᅺྺᆌᆩ๟Բ୲๕‫ڦ‬ăසࡕሞ‫ݥ‬Բ୲๕ᆌᆩ ዐ๑ᆩAD7794/AD7795ǈᆌ๑ᆩ‫گ‬ሯำएጚ‫ۉ‬უᇸă ‫ܔ‬ᇀAD7794/AD7795ǈॺᅱ๑ᆩ‫ڦ‬2.5 Vएጚ‫ۉ‬უᇸԈ ઔADR381ࢅADR391ǈܾኁ਩ྺ‫گ‬ሯำĂ‫ࡼࠀگ‬एጚ‫ۉ‬უ ᇸă࣏ᆌጀᅪǈएጚ‫ۉ‬უ๼෇༵ࠃߛፆੇĂ‫ۯ‬ༀ޶ሜăᆯ ᇀ߳एጚ‫ۉ‬უ๼෇‫ڦ‬๼෇ፆੇ๟‫ۯ‬ༀ‫ڦ‬ǈᅺُኄၵ๼෇ฉ ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీࣷᆅഐ኱ୁሺᅮဃֶǈਏ༹ൽਦᇀ ൻ‫ۯ‬एጚ‫ۉ‬უ๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼‫؜‬ፆੇă ए ጚ ‫ ۉ‬უ ᇸ (૩ ස ADR391)ཚ ‫ ׉‬ਏ ᆶ ‫ گ‬๼ ‫ ؜‬ፆ ੇ ǈ ᅺ ܸ REFIN(+)ฉ੗ᅜᆶඁ᳘‫ۉ‬ඹǈܸփࣷߴဣཥ‫ټ‬ઠሺᅮဃ ֶăසࡕሞྔև‫ۉ‬ፆฉइൽएጚ๼෇‫ۉ‬უǈሶᅪ࿆ጣएጚ ‫ۉ‬უ๼෇‫܋‬ਏᆶ࢔‫ྔڦٷ‬ևᇸፆੇă‫ܔ‬ᇀُૌ‫ۉ‬ୟದዃǈ փླྀ४ሞREFINᆅগฉ৊ႜྔևඁ᳘ă एጚ‫ۉ‬უॠ֪ AD7794/AD7795ࡤᆶೌాएጚ‫ۉ‬უॠ֪‫ۉ‬ୟǈ‫ړ‬ᆩࢽ჋ስ ྔևएጚ‫ۉ‬უྺएጚ‫ۉ‬უᇸ้ǈ޿‫ۉ‬ୟ੗ᅜॠ֪ഗॲ๟‫ޏ‬ ᆶᆩᇀገ࣑ईၯጚ‫ڦ‬ᆶၳएጚ‫ۉ‬უăॽದዃस٪ഗዐ‫ڦ‬ REF_DET࿋ ย ዃ ྺ 1ǈ ੗ ᅜ ๑ ీ ُ ༬ Ⴀ ă ස ࡕ ჋ ۨ ‫ڦ‬ REFIN(+)ᇑREFIN(–)ᆅগኮक़‫ۉڦ‬უই዁0.3 Vᅜူǈईኁ REFIN(+)ईREFIN(–)๼෇ਸୟǈሶAD7794/AD7795ಒ܏໲ փምਏᆶᆶၳ‫ڦ‬एጚ‫ۉ‬უăُ้ǈጒༀस٪ഗዐ‫ڦ‬ NOXREF࿋ዃ 1ăසࡕAD7794/AD7795ኟሞኴႜኟ‫׉‬ገ ࣑ǈܸNOXREF࿋Վྺᆶၳǈሶገ࣑঳ࡕՎྺඇ1ăᅺُǈ ժ࿮Ղᄲሞኴႜገ้࣑‫׼‬Ⴤ॔๫NOXREF࿋‫ڦ‬ጒༀǈኻႴ ሞٗADCຕ਍स٪ഗ‫܁‬ൽ‫ڦ‬ገ࣑঳ࡕྺඇ1้ᄓኤഄጒ ༀăසࡕAD7794/AD7795ኟሞኴႜ฿ۙई஢ଉ‫ײ‬ၯጚǈܸ NOXREF࿋Վྺᆶၳǈሶॽ্ኹ၎ᆌၯጚस٪ഗ߸ႎǈᅜ ௨ኄၵस٪ഗሜ෇‫ٱ‬ဃ‫ڦ‬ဣຕǈཞ้ጒༀस٪ഗ‫ڦ‬ERR࿋ ࣷዃ1ăසࡕᆩࢽփᇼᅪ௅ْኴႜၯጚ้‫ۼ‬ᄲᄓኤ๟‫ޏ‬٪ ሞᆶၳ‫ڦ‬एጚ‫ۉ‬უᇸǈሶᆌሞၯጚዜ೺঳ຐ้ॠֱERR࿋ ‫ڦ‬ጒༀă ް࿋ ‫ܔ‬AD7794/AD7795૶Ⴤႀ෇32߲1ǈ੗ᅜ๑ഗॲ‫ۉڦ‬ୟࢅ ‫ز‬ႜথ੨ް࿋ăኄॽް࿋இडĂຕጴ୳հഗࢅఇెۙ዆ ഗǈܸٗ໯ᆶೌాस٪ഗް࿋ྺఐණኵăฉ‫้ࣷۉ‬ጲ‫ۯ‬ኴ ႜް࿋ăഔ‫ްۯ‬࿋ኮࢫǈᆩࢽՂႷ‫ځڪ‬500 μs֍ీ‫ݡ‬࿚ೌా स٪ഗăසࡕSCLK၍ୟฉ‫ڦ‬ሯำ‫ڞ‬ዂ‫ز‬ႜথ੨ෟ฿ཞօǈ ሶ੗ኴႜް࿋ᅜ࣬ްཞօă AVDD॔੦ഗ ‫أ‬କገ࣑ྔև‫ۉ‬უྔǈᄺ੗ᅜ૧ᆩADC॔੦AVDDᆅগฉ ‫ۉڦ‬უă‫ړ‬CH2዁CH0࿋‫ڪ‬ᇀ1้ǈAVDDᆅগฉ‫ۉڦ‬უሞ ాևປ३6Ԡǈ໯इ‫ۉڦڥ‬უแेᇀΣ-Δۙ዆ഗǈ໲֑ᆩ 1.17 Vాևएጚ‫ۉ‬უ৊ႜఇຕገ࣑ăُ༬Ⴀ‫ڦ‬ᆩ‫ت‬ሞᇀ੗ ᅜ॔੦‫ۉ‬ᇸ‫ۉ‬უ‫ڦ‬հ‫ۯ‬ă ၯጚ AD7794/AD7795༵ࠃ຺ዖၯጚఇ๕ǖాևଭ‫ۉ‬ೝၯጚĂా և஢ଉ‫ײ‬ၯጚĂဣཥଭ‫ۉ‬ೝၯጚࢅဣཥ஢ଉ‫ײ‬ၯጚǈཚࡗ ఇ๕स٪ഗዐ‫ڦ‬ఇ๕࿋੗ᅜยዃၯጚఇ๕ăኄၵၯጚ੗ᅜ ॽ฿ۙဃֶࢅ஢ଉ‫ײ‬ဃֶᆶၳ‫ں‬ই዁ᇑሯำ၎‫ړ‬ă௅ْገ ࣑ྜ‫ࢫׯ‬ǈADCገ࣑঳ࡕႴ૧ᆩADCၯጚस٪ഗ৊ႜۙ ኝǈ඗ࢫႀ෇ຕ਍स٪ഗăገ࣑঳ࡕံ३ඁ฿ۙၯጚဣ ຕǈ඗ࢫ‫ױ‬ᅜ஢ଉ‫ײ‬ဣຕă ྺഔ‫ۯ‬ၯጚǈՂႷॽ๢‫ڦړ‬ኵႀ෇ఇ๕स٪ഗዐ‫ڦ‬MD2዁ MD0࿋ăၯጚྜ‫ࢫׯ‬ǈ၎ᆌၯጚस٪ഗ‫ాڦ‬ඹࣷԥ߸ႎǈ ጒༀस٪ഗዐ‫ڦ‬DRY࿋ዃ1ǈDOUT/DRYᆅগՎྺ‫ۉگ‬ೝ )සࡕCSྺ‫ۉگ‬ೝ*ǈժ൐AD7794/AD7795‫࣮ݓ‬੣ှఇ๕ă ాևଭ‫ۉ‬ೝई஢ଉ‫ײ‬ၯጚ೺क़ǈ߳ଭ๼෇ࢅ஢ଉ‫ײ‬๼෇ጲ ‫ۯ‬ᇑADC๼෇ᆅগాև၎૶ă඗ܸǈဣཥၯጚሶᄲ൱ሞഔ ‫ۯ‬ၯጚఇ๕ኮമǈॽဣཥଭ‫ۉ‬ೝ‫ۉ‬უࢅဣཥ஢ଉ‫ۉײ‬უแ ेᇀADCăኄᄣ੗ၩ‫أ‬ADC‫ྔڦ‬ևဃֶă ٗ֡ፕฉઠੂǈၯጚ৽ၟଷᅃْADCገ࣑ăසႴᄲǈଭ‫ۉ‬ ೝၯጚᆌ‫ړ‬ጺ๟ሞ஢ଉ‫ײ‬ၯጚኮമኴႜăဣཥ෉ॲᆌ॔๫ ጒༀस٪ഗዐ‫ڦ‬DRY࿋ईDOUT/DRYᆅগǈཚࡗᅃ߲୾კ Ⴞଚईዐ܏ൻ‫ײۯ‬Ⴞඓۨၯጚࢆ้঳ຐă ቘհ๑ీ้ǈాև฿ۙၯጚࢅဣཥ฿ۙၯጚ਩Ⴔᄲଇ߲ገ ࣑ዜ೺ăُ้࿮Ⴔኴႜాև฿ۙၯጚǈᅺྺADCԨวࣷ‫׼‬ Ⴤၩ‫أ‬฿ۙăቘհ্ᆩ้ǈྜ‫ాׯ‬և฿ۙၯጚईဣཥ฿ۙ ၯጚႴᄲᅃ߲ገ࣑ዜ೺ăُ้Ⴔᄲኴႜాև฿ۙၯጚǈܸ ൐ᆌሞ஢ଉ‫ײ‬ၯጚኮമኴႜă ྺኴႜాև஢ଉ‫ײ‬ၯጚǈ஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫ۯ‬ᇑُၯጚ ჋ۨ‫ڦ‬ఇె๼෇‫܋‬၎૶ă‫ړ‬ሺᅮྺ1้ǈྜ‫ׯ‬ၯጚႴᄲଇ ߲ገ࣑ዜ೺)ቘհ๑ీ้*ईᅃ߲ገ࣑ዜ೺)ቘհ্ᆩ้*ă‫ܔ‬ ᇀ߸ߛሺᅮǈኴႜ஢ଉ‫ײ‬ၯጚႴᄲ຺߲ገ࣑ዜ೺)ቘհ๑ీ Rev. D | Page 33 of 36 AD7794/AD7795 ้*ईଇ߲ገ࣑ዜ೺)ቘհ্ᆩ้*ăDOUT/DRY ሞၯጚഔ‫ۯ‬ ้Վྺߛ‫ۉ‬ೝǈሞၯጚྜ‫ۉگް้࣬ׯ‬ೝăၯጚኮࢫǈ ADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕዃᇀ჋ۨཚ‫ڦڢ‬஢ ଉ‫ײ‬स٪ഗዐă‫ړ‬ሺᅮྺ128้ǈ࿮݆ኴႜాև஢ଉ‫ײ‬ၯ ጚă‫ܔ‬ᇀ޿ሺᅮยዃǈ੗ᅜኴႜဣཥ஢ଉ‫ײ‬ၯጚă௅ْ߸ ߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้ǈ‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚǈᅜ๑஢ଉ ‫ײ‬ဃֶፌၭă ాև஢ଉ‫ײ‬ၯጚኻీሞ༬ۨ߸ႎ໏୲้ኴႜă‫ړ‬ሺᅮྺ 1Ă2ࢅ4้ǈ੗ᅜሞඪᅪ߸ႎ໏୲้ኴႜాև஢ଉ‫ײ‬ၯ ጚă‫ڍ‬๟ǈ‫ܔ‬ᇀ߸ߛሺᅮǈሶኻీሞ߸ႎ໏୲ၭᇀई‫ڪ‬ᇀ 16.7 HzĂ33.3 Hzࢅ50 Hz้ኴႜăփࡗǈ஢ଉ‫ײ‬ဃֶփᅺ ߸ႎ໏୲ܸ߀Վǈᅺُሞగᅃ߸ႎ໏୲้ኴႜ‫ڦ‬ၯጚ‫ܔ‬໯ ᆶ߸ႎ໏୲਩ᆶၳ)्ยሺᅮईएጚ‫ۉ‬უᇸԍ‫׼‬փՎ*ă ྜ‫ׯ‬ဣཥ஢ଉ‫ײ‬ၯጚႴᄲଇ߲ገ࣑ዜ೺)ቘհ๑ీ้*ईᅃ ߲ገ࣑ዜ೺)ቘհ্ᆩ้*ǈᇑሺᅮยዃ࿮࠲ăဣཥ஢ଉ‫ײ‬ ၯጚ੗ᅜሞ໯ᆶሺᅮࢅ໯ᆶ߸ႎ໏୲้ኴႜăቘհ্ᆩ ้ǈ฿ۙၯጚ)ాևईဣཥ฿ۙ*ᆌሞဣཥ஢ଉ‫ײ‬ၯጚഔ‫ۯ‬ ኮമኴႜă থ‫ࢅں‬քਆ ᆯᇀADC‫ڦ‬ఇె๼෇ࢅएጚ๼෇਩ྺֶ‫ݴ‬๼෇ǈᅺُఇె ۙ዆ഗዐ‫ܠڦ‬ຕ‫ۉ‬უ਩ྺࠌఇ‫ۉ‬უăഗॲ‫؜ڦ‬෥ࠌఇᅞ዆ Ⴀీ੗ၩ‫أ‬ኄၵ๼෇‫ࠌڦ‬ఇሯำăຕጴ୳հഗ੗ᅞ዆‫ۉ‬ᇸ ฉ‫ټ੻ڦ‬ሯำǈ‫ܔ‬ఫၵሞۙ዆ഗ֑ᄣೕ୲‫ڦ‬ኝຕԠೕ୲‫ڦ‬ ሯำ‫ྔأ‬ăຕጴ୳հഗᄺ੗ᅜၩ‫أ‬ઠጲఇెࢅएጚ๼෇‫܋‬ ‫ڦ‬ሯำǈཉॲ๟ኄၵሯำᇸுᆶ๑ఇెۙ዆ഗԏࢅăᅺ ُǈAD7794/AD7795‫ੇڦ‬ሯీ૰Բ‫د‬ཥߛ‫ݴ‬Ր୲ገ࣑ഗ߸ ഽăփࡗǈ६ᇀAD7794/AD7795‫ݴڦ‬Ր୲๟සُኮߛǈܸ ഄሯำ‫ۉ‬ೝ๟සُኮ‫گ‬ǈᅺُՂႷ৉ั‫ځܔ‬থ‫ࢅں‬քਆă AD7794/AD7795໯ሞ‫ڦ‬ᆇຘ‫ۉ‬ୟӱᆌ֑ᆩఇెև‫ݴ‬ᇑຕጴ և‫ݴݴ‬૗ยऺǈժ၌዆ሞ‫ۉ‬ୟӱ‫ڦ‬ᅃۨ൶ᇘాăྺํ၄ፌ ॅೡԸǈথ‫֫ں‬ᅃӯᆌ৑ଉณ֑ᆩ์ਗ਼रຍă ॺᅱॽAD7794/AD7795‫ڦ‬GNDᆅগ૶‫ڟ‬ဣཥ‫ڦ‬AGND֫ă ࿮ஃ֑ൽࢆዖքਆǈᆩࢽ਩ՂႷጀᅪࡀࣄဣཥዐ‫࣮ڦୁۉ‬ ୁୟ০ǈඓԍ໯ᆶ‫ୁ࣮ڦୁۉ‬ୟ০਩৑੗ీ੍ৎ‫ٳڟୁۉ‬ ణ‫ںڦ‬໯ঢ়ࡗ‫ڦ‬ୟ০ăൎကഽ዆ຕጴ‫ࡗୁୁۉ‬քਆ‫ڦ‬ AGNDև‫ݴ‬ă ॽAD7794/AD7795‫ڦ‬থ‫ݣ֫ں‬ሞഄူ‫ݛ‬੗ᅜ‫ݞ‬ኹሯำ᳘ ࢇăAD7794/AD7795‫ۉڦ‬ᇸ၍ୟᆌ֑ᆩ৑੗ీ੻‫ڦ‬ጽ၍ǈ ᅜ༵ࠃ‫گ‬ፆੇୟ০ǈժ३ၭ‫ۉ‬ᇸ၍ୟฉ‫ڦ‬றِሯำၳᆌă ้ዓ‫੺ڪ‬໏ਸ࠲႑ࡽᆌ૧ᆩຕጴ‫ں‬ೡԸഐઠǈᅜ௨ၠ‫ۉ‬ୟ ӱ‫ڦ‬ഄ໲և‫ޖݴ‬พሯำăُྔǈਨփᆌॽ้ዓ႑ࡽጽ၍ք ยሞఇె๼෇޹ৎăՆ௨ຕጴ႑ࡽᇑఇె႑ࡽ঍۠ă‫ۉ‬ୟ ӱ၎‫ݒ‬ଇ֨ฉ‫ڦ‬ጽ၍ᆌԵُ‫ؽ‬኱ǈኄᄣᆶዺᇀ३ၭ‫ۉ‬ୟӱ ‫ڦ‬ઍཚၳᆌăྲ‫ټ‬၍रຍ๟ፌॅ჋ስǈ‫ڍ‬ኄዖरຍ‫ܔ‬ᇀມ ௬‫ۉ‬ୟӱ࿄Ղጺ๟੗ႜă֑ᆩኄዖरຍ้ǈ‫ۉ‬ୟӱ‫ڦ‬ᇮॲ ֨ጆᆩᇀথ‫֫ں‬ǈ႑ࡽጽ၍ሶքยሞࡰথ֨ă ๑ᆩߛ‫ݴ‬Ր୲ADC้ǈଆࡻ‫ڦ‬ඁ᳘ๆ‫ݴ‬ዘᄲăᆌॽ10 μF᮳ ‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴ǈ‫ܔ‬AVDDඁ᳘‫ڟ‬GNDăཞ้ᆌॽ 10 μF᮳‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴ǈ‫ܔ‬DVDDඁ᳘‫ڟ‬ဣཥ‫ڦ‬ DGND֫ Ǘ ဣ ཥ AGND‫ ڟ‬DGND‫ ૶ ڦ‬থ ᆌ ੍ ৎ AD7794/AD7795ăྺ๑ኄၵඁ᳘ᇮॲํ၄ፌॅၳࡕǈᆌ๑ ഄ৑੗ీ੍ৎഗॲǈፌࡻ๟৆ཌྷഗॲăᆌ๑ᆩ0.1 μF༩ٍ‫ۉ‬ ඹ‫ܔ‬໯ᆶஇडႊೌඁ᳘‫ڟ‬DGNDă Rev. D | Page 34 of 36 AD7794/AD7795 ᆌᆩ႑တ AD7794/AD7795਩ྺ‫ׯگ‬ԨĂߛ‫ݴ‬Ր୲ఇຕገ࣑ഗăఇຕ ገ࣑ࠀీᆯΣ-Δ঳ࠓ༵ࠃǈᅺُഗॲ‫ੇڦ‬ሯీ૰࢔ഽǈ‫ݥ‬ ‫׉‬๢ࢇ‫ߌد‬ഗ֪ଉĂ߾ᄽࢅࡗ‫ײ‬੦዆ᆌᆩă ሞएᇀ‫ߌد‬ഗ‫ڦ‬ᆌᆩዐ๑ᆩAD7794/AD7795‫ࡻ߲ܾڼڦ‬ ‫ت‬ǈ๟‫ࡼࠀگ‬ᆌᆩ੗ᅜ؊‫ݴ‬૧ᆩ‫ۉ܋گ‬ᇸਸ࠲ă‫ۉ܋گ‬ᇸ ਸ࠲ᇑ‫ڦൃۉ‬ૐ‫૴ز܋‬ăኟ‫߾׉‬ፕ้ǈ޿ਸ࠲ԿࢇǈᅜՍ ኴႜ֪ଉăሞᄲ൱‫ڦࡼࠀگ‬ᆌᆩዐǈAD7794/AD7795੗ᅜ ‫ت‬ᇀ‫ځ‬ऐఇ๕ǈܸٗ၂ዸই‫گ‬ᆌᆩ‫ࡼࠀڦ‬ăُྔǈሞ‫ځ‬ऐ ఇ๕ူǈ‫ۉ܋گ‬ᇸਸ࠲੗ᅜ܏ਸǈᅜ௨മ‫ߌد܋‬ഗփՂᄲ ‫୲ࠀݯࡼں‬ă‫ړ‬ഗॲ૗ਸ‫ځ‬ऐఇ๕൐‫ۉ܋گ‬ᇸਸ࠲Կࢇ ้ǈᆩࢽᆌඓԍമ‫ۉ܋‬ୟྜඇॺ૬ǈ඗ࢫ֍ీ‫׈‬๬‫܁‬ൽ AD7794/AD7795ă ୁଉऺ ཮24၂๖AD7794/AD7795ሞୁଉऺዐ‫ڦ‬ᆌᆩǈ޿ୁଉऺᆯ ଇ߲უ૰‫ߌد‬ഗፇ‫ׯ‬ǈୁଉ‫ڪ‬ᇀუ૰ֶă໯๖უ૰‫ߌد‬ഗ ྺSensymࠅິ‫ڦ‬BP01ăუ૰‫ߌد‬ഗ࿋ᇀ‫ྪൃۉ‬ஏዐǈሞഄ OUT+ᇑOUT–ᆅগኮक़༵ࠃֶ‫ݴ‬๼‫ۉ؜‬უă‫ܔ‬ᇀ‫ߌد‬ഗ‫ڦ‬ ‫ۨܮ‬஢ଉ‫ײ‬უ૰)Ԩ૩ዐྺ300 mmHg*ǈֶ‫ݴ‬๼‫ۉ؜‬უྺ๼ ෇‫ۉ‬უ)नIN(+)‫܋‬ᇑIN(–)‫܋‬ኮक़‫ۉڦ‬უ*‫ڦ‬3 mV/Vă ཮ዐǈ࿒‫܈‬ց‫׋‬๟ཚࡗඤ௺‫ۉ‬ፆઠኴႜăೌాघ૤‫ྺୁۉ‬ ޿ඤ௺‫ۉ‬ፆ༵ࠃघ૤ăُྔǈ࿒‫֪܈‬ଉ‫ڦ‬एጚ‫ۉ‬უ๟ٗᅃ ߲ᇑ޿ඤ௺‫ۉ‬ፆ‫ڦ૴ز‬৛௢‫ۉ‬ፆइ‫ڥ‬ăᆯُ੗ํ၄Բ୲๕ ֪ଉǈघ૤‫ڦୁۉ‬հ‫֪ܔۯ‬ଉுᆶᆖၚ)֪ଉ঳ࡕ๟৛௢֖ ੊‫ۉ‬ፆᇑඤ௺‫ۉ‬ፆ‫ڦ‬Բኵ*ă ्ยघ૤‫ۉ‬უྺ5 Vǈሶ‫ߌد‬ഗ‫ڦ‬஢ଉ‫ײ‬๼‫ۉ؜‬უྺ15 mVă ‫ڦൃۉ‬घ૤‫ۉ‬უ੗ᅜ኱থᆩઠ༵ࠃADC‫ڦ‬एጚ‫ۉ‬უǈᅺྺ एጚ‫ۉ‬უ๼෇‫ྷݔ‬Ԉઔ‫ۉ‬ᇸ‫ۉ‬უă VDD REFIN1(+) GND IN+ OUT– AD7794/AD7795 AIN1(+) AIN1(–) IN+ OUT– OUT+ AVDD VDD IN– OUT+ AIN2(+) AIN2(–) IN– AIN3(+) MUX BUF IN-AMP Σ-Δ ADC SERIAL INTERFACE AND LOGIC CONTROL DOUT/RDY DIN SCLK CS AIN3(–) GND REFIN2(+) VDD REFIN2(–) IOUT1 INTERNAL CLOCK DVDD REFIN1(–) PSW 04854-025 RCM GND CLK ཮24. ‫ۆ‬႙ᆌᆩ(ୁଉऺ) Rev. D | Page 35 of 36 AD7794/AD7795 ྔႚ؅٫ 7.90 7.80 7.70 24 13 4.50 4.40 4.30 1 6.40 BSC 12 PIN 1 0.65 BSC 0.15 0.05 0.30 0.19 1.20 MAX SEATING PLANE 0.20 0.09 8° 0° 0.75 0.60 0.45 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-153-AD ཮25. 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] (RU-24) ؅٫(‫ڇ‬࿋ǖࡹ௝) ۩ࠔኸళ ႙ࡽ AD7794BRU AD7794BRU-REEL AD7794BRUZ 1 AD7794BRUZ-REEL1 AD7794CRUZ1 AD7794CRUZ-REEL1 AD7795BRUZ1 AD7795BRUZ-REEL1 EVAL-AD7794EB EVAL-AD7795EB 1 ࿒‫!ྷݔ܈‬ –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +105°C –40°C ዁ +125°C –40°C ዁ +125°C –40°C ዁ +105°C –40°C ዁ +105°C ‫ހ‬ጎ௮ຎ 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] 24ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP] ೠࠚӱ ೠࠚӱ Z = ‫ࢇޙ‬RoHSՔጚ‫ڦ‬ग़ඹഗॲă ©2004-2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04854-0-3/07(D) Rev. D | Page 36 of 36 ‫ހ‬ጎ჋ၜ RU-24 RU-24 RU-24 RU-24 RU-24 RU-24 RU-24 RU-24

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