AD7294BSUZRL

ण‫ܠׯ‬ཚ‫ڢ‬ADCĂDACĂ࿒‫ߌد܈‬ഗࢅ ‫ୁۉ‬ॠ֪ࠀీ‫ڦ‬12࿋॔੦ࢅ੦዆ဣཥ AD7294  ༬Ⴀ ᆌᆩ 12࿋SAR ADCLjገ้࣑क़ྺ3 μs ‫ނ‬࿡एበ 4ୟ‫ݥ‬ጆᆩఇె๼෇ ! ! ֶ‫ݴ‬/‫܋ڇ‬ VREFĂ2 × VREF๼෇‫ྷݔ‬ 2ୟߛ‫ୁۉ܋‬ॠ֪๼෇ ! ! ߾ፕ‫ۉ‬უ‫ྷݔ‬ǖ5 V዁59.4 V ! ! ፌ‫ٷ‬ሺᅮဃֶǖ0.5% ! ! ๼෇‫ྷݔ‬ǖ±200 mV 2ୟྔևܾट࠶࿒‫ߌد܈‬ഗ๼෇ GSMĂEDGEĂUMTSĂCDMAĂTD-SCDMAĂW-CDMAĂ WiMAX ‫ۅܠܔۅ‬तഄ໱พೕ‫د‬๼ဣཥ 12 VĂ24 VĂ48 V‫כ‬ሜᆌᆩ ߾ᄽ੦዆ ߁ຎ AD7294๟ᅃዖ‫ڇ‬ႊೌ঴ਦ‫ݛ‬ӄLjण‫ୁۉ‬Ă‫ۉ‬უࢅ࿒‫॔܈‬੦ ! ! ֪ଉ‫ྷݔ‬ǖ−55°C዁+150°C ࢅ੦዆໯Ⴔ‫ڦ‬ඇևཚᆩࠀీᇀᅃ༹ă޿ഗॲԈઔᆩᇀ‫ۉୁݴ‬ ! ! ৛‫܈‬ǖ±2°C ፆഗ‫॔ୁۉ‬੦‫گڦ‬უ(±200 mV)ఇె๼෇ॠ֪‫ٷݣ‬ഗĂ࿒‫܈‬ ! ! ‫ۉ૴ز‬ፆၩ‫أ‬ ॠ֪๼෇ࢅ຺߲‫ݥ‬ጆᆩ႙ఇె๼෇ཚ‫ڢ‬Ljኄၵཚ‫ڢ‬ᅜ‫ܠ‬ୟް 1߲ాև࿒‫ߌد܈‬ഗ ᆩ‫ݛ‬๕থ෇ᅃ߲ገ้࣑क़ྺ3 μs‫ڦ‬SAR႙ఇຕገ࣑ഗ(ADC)ă ! ! ৛‫܈‬ǖ±2°C ຕఇገ࣑ഗ(DAC)ࢅADC਩ཚࡗߛ৛‫ా܈‬ևएጚ‫ۉ‬უൻ ! ాዃ॔੦ࠀీ ‫ۯ‬ă຺߲12࿋DACྺ‫ۉ‬უ੦዆༵ࠃ໯Ⴔ๼‫؜‬ăAD7294ཞ ! ! ௅߲ཚ‫ڢ‬਩ದᆶፌၭኵ/ፌ‫ٷ‬ኵऻ୤ഗ ้࣏Ԉઔᆩᇀয়Ԓࠀీ‫ڦ‬၌ኵस٪ഗă޿ഗॲएᇀADIߛ ! ! ੗Պ‫༵ײ‬ႝហኵ უDMOS߾ᅝยऺܸ‫ׯ‬Lj‫ࢇޙ‬ഄߛ‫ۉ‬უᄲ൱ǖ‫ୁۉ‬ॠ֪๼ ! ! ੗Պ‫׿ײ‬ው ෇ྺ59.4 VLjDAC๼‫ۉ؜‬უፌߛ੗‫ٳ‬15 Vă ! ຺߲12࿋‫ۙڇ‬15 V DAC ! ! ‫ྷݔ‬ǖ5 VLj0 V዁10 Vೋዃ AD7294๟ᅃዖߛ‫܈‬ण‫ڦׯ‬঴ਦ‫ݛ‬ӄLjԈઔ‫ނܔ‬࿡एበᆌᆩ ! ! ॺ૬้क़ǖ8 μs ዐ‫ٷݣ୲ࠀڦ‬ഗ৊ႜ৛ඓ੦዆໯Ⴔᄲ‫ڦ‬ඇևࠀీăሞኄૌ ! ! ဌ‫ୁۉ‬ᇑᇸ‫ୁۉ‬ǖ10 mA ᆌᆩዐLjDAC੗༵ࠃ12࿋‫ݴ‬Ր୲Ljᆩᅜ੦዆ࠀ୲ৗ༹࠶‫ڦ‬ ! ! ฉ‫ްۉ‬࿋(POR)዁0 V ೋዃ‫ୁۉ‬ăཞ้ण‫ׯ‬एᇀඤܾट࠶‫ڦ‬࿒‫ߌد܈‬ഗLjᅜց‫׋‬ 2.5 Vాևएጚ‫ۉ‬უ ࿒‫܈‬ၳᆌăADC‫ࢅୁۉ܋ߛܔ‬࿒‫܈‬৊ႜ॔੦ă໯ᆶኄၵࠀ ! ມ၍੺໏ఇ๕I2Cথ੨ ీඇ‫ۼ‬ण‫ׯ‬ᇀኄዖ64ᆅগTQFP‫ހ‬ጎഗॲኮాLjഄ߾ፕ࿒ ! ࿒‫ྷݔ܈‬ǖ−40°C዁+105°C ‫ྺ܈‬ǖ−40°C዁+105°Că ! ‫ހ‬ጎૌ႙ǖ64ᆅগTQFP Rev. C 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 ©2008–2009 Analog Devices, Inc. All rights reserved. ADIዐ࿔Ӳຕ਍๮֩๟ᆈ࿔Ӳຕ਍๮֩‫ڦ‬ᅳ࿔Lj৤൩ଌ঴‫݋‬ᅳዐ੗ీ٪ሞ‫ڦ‬ᇕჾፇኯई‫݋‬ᅳ‫ٱ‬ဃLjADIփ‫݋ܔ‬ᅳዐ٪ሞ‫ֶڦ‬ᅴईᆯׂُิ‫ٱڦ‬ဃ޶ሴăසႴඓණඪࢆَᇕ‫ڦ‬ጚඓႠLj൩֖੊ADI༵ࠃ ‫ڦ‬ፌႎᆈ࿔Ӳຕ਍๮֩ă AD7294 ణ୤ ༬Ⴀ ................................................................................................... 1 TSENSE1ĂTSENSE2঳ࡕस٪ഗ(0x02ࢅ0x03) ...................... 27 ᆌᆩ ................................................................................................... 1 TSENSEINT঳ࡕस٪ഗ(0x04) .............................................. 27 ߁ຎ ................................................................................................... 1 DACAĂDACBĂDACCĂDACDस٪ഗ(0x01዁0x04) ... 28 Ⴊ۩૦๏ ........................................................................................... 2 ! ࠀీ઀཮ ........................................................................................... 3 ༵ႝጒༀस٪ഗA (0x05)Ăस٪ഗB (0x06)ࢅस٪ഗ C (0x07) .................................................................................. 28 रຍࡀ߭ ........................................................................................... 4 ! ཚ‫ڢ‬Ⴞଚस٪ഗ(0x08) ....................................................... 28 DACरຍࡀ߭ ......................................................................... 4 ! ದዃस٪ഗ(0x09) ................................................................ 29 ! ࠲܏स٪ഗ(0x0A) ............................................................... 30 ADCरຍࡀ߭ ......................................................................... 5 ᅃӯरຍࡀ߭ ......................................................................... 7 DATAHIGH/DATALOWस٪ഗǖ0x0BĂ0x0C (VIN0)Ǘ0x0EĂ ้Ⴞ༬Ⴀ .................................................................................. 8 0x0F (VIN1)Ǘ0x11Ă0x12 (VIN2)Ǘ0x14Ă0x15 (VIN3) .. 30 ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ............................................................................. 9 ‫׿‬ውस٪ഗǖ0x0D (VIN0)Ă0x10 (VIN1)Ă0x13 (VIN2)Ă ! 0x16 (VIN3) ............................................................................. 30 ඤፆ ........................................................................................... 9 ESDয়ߢ ................................................................................... 9 TSENSE฿ۙस٪ഗ(0x26ࢅ0x27) ......................................... 31 ᆅগದዃࢅࠀీ௮ຎ ................................................................... 10 I2Cথ੨ ............................................................................................ 32 ‫ۆ‬႙߾ፕ༬Ⴀ ................................................................................ 12 ! ཚᆩI2C้Ⴞ .......................................................................... 32 ‫ز‬ႜጺ၍‫ں‬኷ጴব .............................................................. 33 ຍᇕ ................................................................................................. 17 ! DACຍᇕ ................................................................................ 17 থ੨ၹᅱ ................................................................................ 33 ! ADCຍᇕ ................................................................................ 17 ߾ፕఇ๕ ........................................................................................ 37 ߾ፕᇱ૙ ........................................................................................ 18 ంସఇ๕ ................................................................................ 37 ! ADC߁ຎ ................................................................................ 18 ጲ‫ۯ‬თ࣍ఇ๕ ....................................................................... 38 ! ADC‫ࡧڿد‬ຕ ....................................................................... 18 ༵ႝࢅ၌ኵᇱ૙ ........................................................................... 39 ! ఇె๼෇ ................................................................................ 18 ALERT_FLAG࿋ ................................................................... 39 ‫ߌدୁۉ‬ഗ ............................................................................ 20 ༵ႝጒༀस٪ഗ ................................................................... 39 ఇెԲডഗ࣍ୟ ................................................................... 21 ! DATAHIGHࢅDATALOW॔੦༬Ⴀ ...................................... 39 ! ࿒‫ߌد܈‬ഗ ............................................................................ 22 ‫׿‬ው ......................................................................................... 40 ! DAC֡ፕ ................................................................................ 23 ᆌᆩ႑တ ........................................................................................ 41 ! ADCࢅDAC‫ڦ‬एጚ‫ۉ‬უᇸ ................................................ 24 ! एበࠀ୲‫ٷݣ‬ഗ‫॔ڦ‬੦ࢅ੦዆ ........................................ 41 VDRIVE༬Ⴀ ............................................................................. 24 ࠀ୲‫ٷݣ‬ഗ‫ڦ‬ሺᅮ੦዆ ...................................................... 42 स٪ഗยዃ .................................................................................... 25 քਆࢅದዃ .................................................................................... 43 ! ‫ں‬኷ኸኍस٪ഗ ................................................................... 25 ‫ۉ‬ᇸಖୟࢅথ‫ ں‬................................................................... 43 ! ంସस٪ഗ(0x00) ................................................................ 26 ྔႚ؅٫ ........................................................................................ 44 ঳ࡕस٪ഗ(0x01) ................................................................ 26 ۩ࠔኸళ ................................................................................ 44 Ⴊ۩૦๏ 2009౎7ሆ—Ⴊ۩ӲB዁Ⴊ۩ӲC 　　　　　　　　　　　 ߸߀ದዃस٪ഗ(0x09)և‫ ݴ‬....................................................... 29 ߸߀՗4࿂ጀ .................................................................................... 8 ߸߀՗23ࢅ՗24 ............................................................................ 29 2009౎4ሆ—Ⴊ۩ӲA዁Ⴊ۩ӲB 　　　　　　　　　　　 ߸߀՗27 ......................................................................................... 30 ߸߀՗2 ............................................................................................. 6 ߸߀ጲ‫ۯ‬თ࣍ఇ๕և‫ ݴ‬.............................................................. 38 ߸߀՗3 ............................................................................................. 7 ߸߀༵ႝጒༀस٪ഗև‫ ݴ‬.......................................................... 39 ߸߀՗23 ......................................................................................... 29 ߸߀DATAHIGHࢅDATALOW॔੦༬Ⴀև‫ ݴ‬............................. 39 2009౎3ሆ—Ⴊ۩Ӳ0዁Ⴊ۩ӲA 　　　　　　　　　　　 2008౎1ሆ—Ⴊ۩Ӳ0ǖ‫؛‬๔Ӳ Rev. C | Page 2 of 44 　　　　　　　　　　　 AD7294  ࠀీ઀཮ RSENSE VPP(1 TO 2) RS1(+) RS1(–) RS2(+) HIGH SIDE CURRENT SENSE ISENSE 2 OVERRANGE AVDD AGND DAC OUT (1 TO 6) (1 TO 7) V+ AB/CD 2.5V REF HIGH SIDE CURRENT SENSE 12-BIT DAC 100kΩ 200kΩ VOUTA VREF 10.41 ISENSE 1 OVERRANGE VIN0 VIN1 VIN2 VIN3 D1+ D2+ 100kΩ MUX 12-BIT ADC LIMIT REGISTERS 12-BIT DAC 100k 200kΩ 100kΩ OFFSET IN B 200kΩ TEMP SENSOR D2– OFFSET IN A 200kΩ VOUTB 12-BIT DAC T2 200kΩ 100kΩ VOUTC D1– 100kΩ CONTROL LOGIC AD7294 12-BIT DAC 200kΩ 100kΩ OFFSET IN C 200kΩ VOUTD I2C INTERFACE PROTOCOL DVDD DGND (1 TO 2) SDA SCL AS2 AS1 AS0 DCAP ALERT/ BUSY ཮1 Rev. C | Page 3 of 44 100kΩ 200kΩ OFFSET IN D 05747-001 T1 TO LOAD REFOUT/ REFOUT/ RS2(–) REFIN ADC REFIN DAC AD7294 रຍࡀ߭ DACरຍࡀ߭ ‫ݥأ‬ଷᆶຫ௽LjAVDD = DVDD = 4.5 V዁5.5 VLjAGND = DGND = 0 VLj2.5 Vాևएጚ‫ۉ‬უǗVDRIVE = 2.7 V዁5.5 VǗTA =−40°C዁ +105°CăDAC OUTV+ ABࢅDAC OUTV+ CD = 4.5 V዁16.5 VLjOFFSET IN x‫ޝ‬੣LjᅺُDAC๼‫ྺྷݔ؜‬0 V዁5 Vă ՗1 ֖ຕ ৛‫܈‬ ‫ݴ‬Ր୲ ၎‫ܔ‬৛‫(܈‬ओ‫ݥݴ‬၍ႠINL) ྲ‫ݥݴ‬၍Ⴀ(DNL) ଭ‫ۉ‬ೝဃֶ DACࢅ๼‫ٷݣ؜‬ഗ‫ڦ‬஢ଉ‫ײ‬ဃֶ ፌၭኵ ‫ۆ‬႙ኵ ±1 ±0.3 2.5 2 ฿ۙဃֶ࿒‫܈‬ဣຕ ±5 ሺᅮဃֶ ሺᅮ࿒‫܈‬ဣຕ ±0.025 ±5 ฿ۙ๼෇ᆅগ‫ྷݔ‬ ֪๬ཉॲ/ጀ๥ ±3 ±1 8 15.51 ࿋ LSB LSB mV mV ԍኤ‫ۙڇ‬Ⴀ ±8.575 ±2 mV mV mV ppm/°C ±0.155 % FSR ppm/°C 0 0 2 × VREF 10 V V 0 1.667 5 5 DC๼෇ፆੇ2 ๼‫ۉ؜‬უॺ૬้क़2 უӦ୲2 ‫܌‬ୟ‫ୁۉ‬2 ޶ሜ‫ୁۉ‬2 ඹႠ޶ሜ࿘ۨႠ2 DC๼‫؜‬ፆੇ2 एጚ‫ۉ‬უ एጚ๼‫ۉ؜‬უ एጚ๼෇‫ۉ‬უ‫ྷݔ‬ ๼෇‫ୁۉ‬ ๼෇‫ۉ‬ඹ2 VREF๼‫؜‬ፆੇ2 एጚ࿒‫܈‬ဣຕ ‫ڇ‬࿋ 12 DAC஢ଉ‫ײ‬ဃֶ ฿ۙဃֶ DAC๼‫؜‬༬Ⴀ ๼‫ۉ؜‬უੵ‫܈‬ ๼‫ۉ؜‬უ฿ۙ ፌ‫ٷ‬ኵ 75 8 kΩ μs 1.1 40 ±10 V/μs mA mA nF Ω 10 1 2.49 0 2.5 100 20 25 10 2.51 AVDD− 2 125 25 V V μA pF Ω ppm/°C DAC OUTV+ = 5.0 V DAC OUTV+ = 15.0 V ၍Ⴀ൶ా֪ଉLjTA= −40°C዁+105°C ၍Ⴀ൶ా֪ଉLjTA= 25°C 0 V዁5 V(2.5 Vएጚ‫ۉ‬უ) ๼෇‫ۉ‬უੵ‫܈‬੗ᅜ࿋ᇀ0 V዁15 V‫ాྷݔ‬Ǘ සࡕOFFSET IN x‫ޝ‬੣Ljሶ฿ۙᆅগ = 2/3 × VREFLj ༵ࠃ0 V዁2 × VREF‫ڦ‬๼‫؜‬ VOUT = 3 VOFFSET − 2 × VREF + VDAC, DAC HIGH-Z = 0 V VOUT = OFFSET IN x, DAC HIGH-Z = VDRIVE 100 kΩথVREFLj200 kΩথAGNDLj९཮47 1/4዁3/4Վࣅሞ1/2 LSB‫ాྷݔ‬Ljٗፌৎᅃ߲SCLᄂ֪ଉ ஢ଉ‫܌ںܔୁۉײ‬ୟ ᇸ‫ࢅୁۉ‬/ईဌ‫ୁۉ‬Ljሞ200 mV‫ۉ‬ᇸ‫ۉ‬უ‫ాྷݔ‬ RL = ∞ 25°C้ፌ‫ٷ‬ဃֶྺ±0.4%LjAVDD = DVDD = 4.5 V዁5.5 V VREF = 2.5 V ُኵ՗๖DAC๼‫ٷݣ؜‬ഗ੗๼‫گ؜‬ᇀDAC OUTV+‫ۉ‬ᇸ15.5 mV‫ۉڦ‬უăසࡕDAC OUTV+‫ۉ‬ᇸ‫ۉ‬უডߛLjሶ࿮޶ሜ้DAC‫ڦ‬஢ଉ‫ײ‬ဃֶ‫ۆ‬႙ኵྺ2 mVă ᄣೌሞ‫ْ݀؛‬ք೺क़਩ঢ়ࡗ֪๬Ljᅜඓԍ‫ࢇޙ‬Քጚᄲ൱Ǘᄣೌ࿄ঢ়ิׂ֪๬ă 1 2 Rev. C | Page 4 of 44 AD7294  ADCरຍࡀ߭ ‫ݥأ‬ଷᆶຫ௽LjAVDD = DVDD = 4.5 V዁5.5 VLjAGND = DGND = 0 VLjVREF = 2.5 Vాևईྔևएጚ‫ۉ‬უǗVDRIVE = 2.7 V዁5.5 VǗ VPP = AVDD዁59.4 VǗTA =−40°C዁+105°Că ՗2 ֖ຕ ፌၭኵ ኱ୁ৛‫܈‬ ‫ݴ‬Ր୲ ओ‫ݥݴ‬၍Ⴀ(INL) 1 1 ྲ‫ݥݴ‬၍Ⴀ(DNL) ‫܋ڇ‬ఇ๕ ฿ۙဃֶ ฿ۙဃֶ೅ದ ሺᅮဃֶ ሺᅮဃֶ೅ದ ֶ‫ݴ‬ఇ๕ ኟሺᅮဃֶ ‫ۆ‬႙ኵ ፌ‫ٷ‬ኵ ‫ڇ‬࿋ ֪๬ཉॲ/ጀ๥ 12 ±0.5 ±0.5 ±0.5 ࿋ LSB LSB LSB ֶ‫ݴ‬ఇ๕ ‫܋ڇ‬ई࿁ֶ‫ݴ‬ఇ๕ ֶ‫ݴ‬Ă‫ࢅ܋ڇ‬࿁ֶ‫ݴ‬ఇ๕ ±1 ±0.4 ±0.5 ±0.4 ±1 ±1.5 ±0.99 ±7 ±2.5 ±3 ±0.5 ±3 ±0.5 ኟሺᅮဃֶ೅ದ ଭ‫ۉ‬ೝဃֶ ଭ‫ۉ‬ೝဃֶ೅ದ ޶ሺᅮဃֶ ޶ሺᅮဃֶ೅ದ ±10 ±3 ±0.5 ገ࣑໏୲ 2 ገ้࣑क़ 2 ጲ‫ۯ‬თ࣍߸ႎ໏୲ ཾུ໏୲ LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB 3 50 22.22 kSPS fSCL= 400 kHz VREF 2 × VREF V 2 × VREF +VREF +2 × VREF V V 0 V዁VREFఇ๕ 0 V዁2 × VREFఇ๕ 0 V዁VREFఇ๕ 0 V዁2 × VREFఇ๕ 0 V዁VREFఇ๕ 0 V዁2 × VREFఇ๕ 3 ఇె๼෇ ‫܋ڇ‬๼෇‫ྷݔ‬ 4 ࿁ֶ‫ݴ‬๼෇‫ྷݔ‬ǖVIN+ − VIN− ඇֶ‫ݴ‬๼෇‫ྷݔ‬ǖVIN+ − VIN− 0 0 0 0 −VREF −2 × VREF 2 30 ๼෇‫ۉ‬ඹ ኱ୁ๼෇ႅ୑‫ୁۉ‬ ±1 ‫ۯ‬ༀႠీ 1 ႑ሯԲ(SNR) 1 ႑భԲ(SINAD) ጺၿհ฿ኈ(THD) 1 ࿮ሗො‫ۯ‬ༀ‫(ྷݔ‬SFDR) ཚ‫ڢ‬क़߰૗ 2 1 pF μA 72.5 71 73 72 dB dB fIN = 10 kHzኟ၀հǗֶ‫ݴ‬ఇ๕ fIN = 10 kHzኟ၀հǗ‫ࢅ܋ڇ‬࿁ֶ‫ݴ‬ఇ๕ 69 71 71.5 72.5 dB dB fIN = 10 kHzኟ၀հǗֶ‫ݴ‬ఇ๕ fIN = 10 kHzኟ၀հǗ‫ࢅ܋ڇ‬࿁ֶ‫ݴ‬ఇ๕ −81 −79 –74 –72 dB dB fIN = 10 kHzኟ၀հǗֶ‫ݴ‬ఇ๕ fIN = 10 kHzኟ၀հǗ‫ࢅ܋ڇ‬࿁ֶ‫ݴ‬ఇ๕ −91 −93 −84.5 −85.5 dB fIN = 10 kHzኟ၀հǗֶ‫ݴ‬ఇ๕ fIN = 10 kHzኟ၀հǗ‫ࢅ܋ڇ‬࿁ֶ‫ݴ‬ఇ๕ dB fIN = 10 kHz዁40 kHz −90 Rev. C | Page 5 of 44 AD7294 ֖ຕ ࿒‫ߌد܈‬ഗ—ాև ߾ፕ‫ྷݔ‬ ৛‫܈‬ ‫ݴ‬Ր୲ ߸ႎ໏୲ ࿒‫ߌد܈‬ഗ—ྔև ߾ፕ‫ྷݔ‬ ৛‫܈‬ ‫ݴ‬Ր୲ ‫ۉگ‬ೝ๼‫ୁۉ؜‬ᇸ2 ዐ‫ۉ‬ೝ๼‫ୁۉ؜‬ᇸ2 ߛ‫ۉ‬ೝ๼‫ୁۉ؜‬ᇸ2 ᆩᇀྔևܾट࠶‫ڦ‬ፌ‫ۉ૴زٷ‬ፆ(RS)2 ፌၭኵ ‫ۆ‬႙ኵ ፌ‫ٷ‬ኵ −40 RS(+)/RS(−)๼෇฿ۙ‫ୁۉ‬ CMRR/PSRR2 ฿ۙဃֶ ฿ۙ೏ᅎ ‫ٷݣ‬ഗ‫ރރ‬ኵሯำ2 VPP‫ۉ‬ᇸ‫ୁۉ‬ एጚ‫ۉ‬უ एጚ๼‫ۉ؜‬უ एጚ๼෇‫ۉ‬უ‫ྷݔ‬ ኱ୁႅ୑‫ୁۉ‬ VREF๼‫؜‬ፆੇ2 ๼෇‫ۉ‬ඹ2 एጚ࿒‫܈‬ဣຕ ֪๬ཉॲ/ጀ๥ +105 ±2 ±2.5 °C °C °C °C ms ాև࿒‫ߌد܈‬ഗLjTA = −30°C዁+90°C ాև࿒‫ߌد܈‬ഗLjTA = −40°C዁+105°C LSB‫ٷ‬ၭ +150 ±2 100 °C °C °C μA μA μA Ω 1 nF 59.4 12.5625 V 32 μA dB μV μV/°C μV mA 0.25 5 −55 0.25 8 32 128 ᆩᇀྔևܾट࠶‫ڦ‬ፌ‫ٷ‬ժ૴‫ۉ‬ඹ(Cp)2 ‫ୁۉ‬ॠ֪ VPP‫ۉ‬ᇸ‫ྷݔ‬ ሺᅮ ‫ڇ‬࿋ ྔևৗ༹࠶ྺ2N3906 ๴ྔևܾट࠶၌዆ TA = TDIODE = −40°C዁+105°C LSB‫ٷ‬ၭ ޹ेဃֶ< ±0.5°CLjCP = 0Lj९཮30 RS= 0Lj९཮29 VPP= AVDD዁59.4 V AVDD 12.4375 12.5 25 80 ±50 1 400 0.18 2.49 0.1 1 ±340 0.25 2.51 4.1 AVDD − 2 ±2 25 20 10 25 ሺᅮྺ12.5้Ljፌ‫ٷ‬ሺᅮဃֶ = 0.5%Ǘ ֑ᆩ+2.5 Vएጚ‫ۉ‬უ้Lj༵ࠃ±200 mV‫ྷݔ‬ V V Ω pF ppm/°C 1 ၘ൧९ຍᇕև‫ݴ‬ă ᄣೌሞ‫ْ݀؛‬ք೺क़਩ঢ়ࡗ֪๬Ljᅜඓԍ‫ࢇޙ‬Քጚᄲ൱Ǘᄣೌ࿄ঢ়ิׂ֪๬ă 3 VIN+ईVIN−ՂႷ๔ዕሞGND/VDD‫ాྷݔ‬ă 4 ኍ‫ۨܮܔ‬ႠీLjVIN− = 0 Vă࠲ᇀVIN−‫ྜڦ‬ኝ๼෇‫ྷݔ‬Lj൩֖९཮39ă 2 Rev. C | Page 6 of 44 ๼෇‫ܔ‬VPP‫܌‬ୟ ችࢇ‫ڟ‬๼෇‫܋‬ VPP = 59.4 V ፌ‫ٷ‬ဃֶྺ±0.2%(ৈ25°C้) ຺߲‫ݥ‬ጆᆩADC ᆩᇀ‫ୁۉ‬ॠ֪ AD7294  ᅃӯरຍࡀ߭ ‫ݥأ‬ଷᆶຫ௽LjAVDD = DVDD = 4.5 V዁5.5 VLjAGND = DGND = 0 VLjVREF = 2.5 Vాևईྔևएጚ‫ۉ‬უǗVDRIVE = 2.7 V዁5.5 VǗ VPP = AVDD዁59.4 VǗDAC OUTV+ ABࢅDAC OUTV+ CD = 4.5 V዁16.5 VǗOFFSET IN x‫ޝ‬੣LjᅺُDAC๼‫ྺྷݔ؜‬0 V዁5 VǗ TA =−40°C዁+105°Că ՗3 ֖ຕ இड๼෇ ๼෇ߛ‫ۉ‬უVIH ๼෇‫ۉگ‬უVIL ๼෇ႅ୑‫ୁۉ‬IIN ๼෇‫׿‬ውVHYST ๼෇‫ۉ‬ඹCIN றِᅞ዆ ፌၭኵ ‫ۆ‬႙ኵ 0.7 VDRIVE 0.3 VDRIVE ±1 0.05 VDRIVE 8 50 I2C®‫ں‬኷ᆅগ‫ޝ‬੣้ፌ‫ྔٷ‬և‫ۉ‬ඹ 30 DACߛፆੇᆅগႅ୑‫ୁۉ‬ 10 1 இड๼‫؜‬ SDAĂALERT ๼‫ۉگ؜‬უVOL ‫ޝ‬੣ༀႅ୑‫ୁۉ‬ ‫ޝ‬੣ༀ๼‫ۉ؜‬ඹ ISENSE OVERRANGE ๼‫ۉߛ؜‬უVOH ๼‫ۉگ؜‬უVOL ‫ג‬ଉ‫ײ‬ยۨ‫ۅ‬ ‫ۉ‬ᇸᄲ൱ VPP AVDD V(+) DVDD VDRIVE IDD(‫ۯ‬ༀ) DAC OUTV+ x, IDD ࠀࡼ ࠲܏ IDD DIDD DAC OUTV+ x, IDD ࠀࡼ ፌ‫ٷ‬ኵ ֪๬ཉॲ/ጀ๥ V V μA V pF ns ৈSDAĂSCL ৈSDAĂSCL pF ෙༀ๼෇ μA μA ๼෇‫ူټ܋‬ઙ‫ۉ‬ፆLjVIN = 5.5 V ๼෇‫ူټ܋‬ઙ‫ۉ‬ፆLjVIN = 0 V 0.4 0.6 ±1 V V μA pF VDRIVE− 0.2 0.2 V V mV 5.3 0.6 59.4 5.5 16.5 5.5 5.5 6.5 1.2 V V V V V mA mA 70 105 mW 0.5 1 35 1 16.5 60 2.5 μA μA μA mW 8 VFS ‫ڇ‬࿋ VFS× 1.2 AVDD 4.5 4.5 4.5 2.7 Rev. C | Page 7 of 44 ๼෇୳հᅞ዆ၭᇀ50 ns‫ڦ‬ሯำॖ‫ރ‬ SDAࢅALERT/BUSYྺਸ୑๼‫؜‬ ISINK = 3 mA ISINK = 6 mA ISENSE OVERRANGEྺླྀྞ๼‫؜‬ ISOURCE = 200 μA(ླྀྞ๼‫)؜‬ ISINK = 200 μA(ླྀྞ๼‫)؜‬ VFS = ±VREF ADC/12.5 DVDD૶‫ڟ‬AVDD AVDD + DVDD + VDRIVELjDAC๼‫܋؜‬࿮޶ሜ ዐक़‫ۉ‬ೝ๼‫ۉ؜‬უLjDAC๼‫܋؜‬࿮޶ሜ ߳AVDDࢅVDRIVE AD7294 ้Ⴞ༬Ⴀ I2C‫ز‬ႜথ੨ ‫ݥأ‬ଷᆶຫ௽LjAVDD = DVDD = 4.5 V዁5.5 VLjAGND = DGND = 0 VLjVREF = 2.5 Vాևईྔևएጚ‫ۉ‬უǗVDRIVE = 2.7 V዁5.5 VǗ VPP = AVDD዁59.4 VǗDAC OUTV+ ABࢅDAC OUTV+ CD = 4.5 V዁16.5 VǗOFFSET IN x‫ޝ‬੣LjᅺُDAC๼‫ྺྷݔ؜‬0 V዁5 VǗ TA =−40°C዁+105°Că ՗4 ֖ຕ1 fSCL t1 t2 t3 t4 t5 t6 ሞTMINĂTMAX้‫ڦ‬၌ኵ 400 2.5 0.6 1.3 0.6 100 0.9 0 0.6 0.6 1.3 300 0 300 0 300 20 + 0.1Cb 2 400 t7 t8 t9 t10 t11 Cb 1 2 ‫ڇ‬࿋ kHz(ፌ‫ٷ‬ኵ) μs(ፌၭኵ) μs(ፌၭኵ) μs(ፌၭኵ) μs(ፌၭኵ) ns(ፌၭኵ) μs(ፌ‫ٷ‬ኵ) μs(ፌၭኵ) μs(ፌၭኵ) μs(ፌၭኵ) μs(ፌၭኵ) ns(ፌ‫ٷ‬ኵ) ns(ፌၭኵ) ns(ፌ‫ٷ‬ኵ) ns(ፌၭኵ) ns(ፌ‫ٷ‬ኵ) ns(ፌၭኵ) pF(ፌ‫ٷ‬ኵ) ௮ຎ SCL้ዓೕ୲ SCLዜ೺้क़ tHIGHLjSCLߛ‫ۉ‬ೝ้क़ tLOWLjSCL‫ۉگ‬ೝ้क़ tHD,STALjഐ๔/ዘްഐ๔ཉॲԍ‫้׼‬क़ tSU,DATLjຕ਍ยዃ้क़ tHD,DATLjຕ਍ԍ‫้׼‬क़ tHD,DATLjຕ਍ԍ‫้׼‬क़ tSU,STALjዘްഐ๔ยዃ้क़ tSU,STOLjཕኹཉॲยዃ้क़ tBUFLjᅃ߲ཕኹཉॲᇑᅃ߲ഐ๔ཉॲኮक़‫ڦ‬ጺ၍੣ှ้क़ tRLjথ๭้SCLࢅSDA‫ڦ‬ฉื้क़ tRLjথ๭้(CMOSग़ඹ)SCLࢅSDA‫ڦ‬ฉื้क़ tFLj݀พ้SDA‫ူڦ‬ই้क़ tFLjথ๭้(CMOSग़ඹ)SDA‫ူڦ‬ই้क़ tFLjথ๭้SCLࢅSDA‫ူڦ‬ই้क़ tFLj݀พ้SCLࢅSDA‫ူڦ‬ই้क़ ߳ཉጺ၍‫ڦ‬ඹႠ޶ሜ 参见图2。 Cb是一条总线的总电容（单位：pF）。tR和tF是在0.3 DVDD至0.7 DVDD范围内测得。 ้Ⴞ཮ࢅ‫ۉ‬ୟ཮ SDA t9 t3 t10 t11 t4 SCL t2 t1 t5 START CONDITION REPEATED START CONDITION STOP CONDITION ཮2. I 2Cग़ඹ‫ز‬ႜথ੨้Ⴞ཮ 200μA IOL VOH (MIN) OR VOL (MAX) TO OUTPUT PIN CL 50pF 200μA t8 t7 IOH ཮3. ຕጴ๼‫޶ڦ؜‬ሜ‫ۉ‬ୟ Rev. C | Page 8 of 44 05747-002 t6 05747-003 t4 AD7294  ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ‫ݥأ‬ଷᆶຫ௽LjTA = 25°Că1 ጀᅪLj‫؜ג‬ฉຎਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ੗ీࣷ‫ڞ‬ዂഗॲᆦ৳Ⴀ໦ ՗5 ࣋ăኄኻ๟‫ۨܮ‬ᆌ૰ኵLjփภतഗॲሞኄၵईඪࢆഄ໲ཉ ֖ຕ VPPx዁AGND AVDDx዁AGND DAC OUTV+ AB዁AGND DAC OUTV+ CD዁AGND DVDD዁DGND VDRIVE዁OPGND ຕጴ๼෇዁OPGND SDA/SCL዁OPGND ຕጴ๼‫؜‬዁OPGND RS(+)/RS(−)዁VPPx REFOUT/REFIN ADC዁AGND REFOUT/REFIN DAC዁AGND OPGND዁AGND OPGND዁DGND AGND዁DGND VOUTx዁AGND ఇె๼෇዁AGND ߾ፕ࿒‫ྷݔ܈‬ Bप ٪‫ئ‬࿒‫ྷݔ܈‬ ঳࿒‫(ྷݔ‬TJፌ‫ٷ‬ኵ) ESD(ට༹ఇ႙) ࣮ୁࡰ‫ރ‬ኵ࿒‫܈‬ ‫ۨܮ‬ኵ −0.3 V዁+70 V −0.3 V዁+7 V −0.3 V዁+17 V −0.3 V዁+17 V −0.3 V዁+7 V −0.3 V዁+7 V −0.3 V዁VDRIVE + 0.3 V −0.3 V዁+7 V −0.3 V዁VDRIVE + 0.3 V VPP − 0.3 V዁VPP + 0.3 V −0.3 V዁AVDD + 0.3 V −0.3 V዁AVDD + 0.3 V −0.3 V዁+0.3 V −0.3 V዁+0.3 V −0.3 V዁+0.3 V −0.3 V዁DAC OUTV(+) + 0.3 V −0.3 V዁AVDD + 0.3 V ॲူ‫؜ג‬Ԩरຍࡀ߭ኸՔ‫ీࠀڦ‬Ⴀ֡ፕă‫׊‬೺ሞਨ‫ܔ‬ፌ‫ٷ‬ ‫ۨܮ‬ኵཉॲူ߾ፕࣷᆖၚഗॲ‫ڦ‬੗੍Ⴀă ྺକ‫ࢇޙ‬IPC 2221߾ᄽՔጚLjॺᅱ‫ߛܔ‬უᆅগ๑ᆩ‫ࢇޙ‬Քጚ ᄲ൱‫ཱ֫ڦ‬ă ඤፆ ՗ 6. ඤፆ ‫ހ‬ጎૌ႙ 64ᆅগ TQFP θJA 54 θJC 16 ‫ڇ‬࿋ °C/W ESDয়ߢ −40°C to +105°C −65°C to +150°C 150°C 1 kV 230°C 1 ߛ‫ٳ‬100 mA‫ڦ‬ຨༀ‫ୁۉ‬փࣷሰ‫ׯ‬SCRឋ໮ă Rev. C | Page 9 of 44 ESD(ৢ‫ߌ௺)ۉݣۉ‬ഗॲă ‫ۉټ‬ഗॲࢅ‫ۉ‬ୟӱ੗ీࣷሞுᆶִਥ‫ڦ‬൧઄ူ‫ۉݣ‬ă ৑࠶Ԩׂ೗ਏᆶጆ૧ईጆᆩԍࢺ‫ۉ‬ୟLj‫ڍ‬ሞᇜ‫ీߛڟ‬ ଉESD้Ljഗॲ੗ీࣷ໦࣋ăᅺُLjᆌ‫֑ړ‬ൽ๢‫ڦړ‬ ESD‫ٯݔݞ‬แLjᅜՆ௨ഗॲႠీူইईࠀీෟ฿ă AD7294 VIN3 VIN2 VIN0 VIN1 REF OUT/REFIN ADC AGND6 DCAP AVDD6 AVDD5 AGND7 RS1(+) NC VPP1 RS1(–) NC VPP2 ᆅগದዃࢅࠀీ௮ຎ 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 NC 1 48 DAC HIGH-Z PIN 1 INDICATOR RS2(–) 2 47 DGND RS2(+) 3 46 ISENSE 1 OVERRANGE NC 4 AVDD1 5 45 ISENSE 2 OVERRANGE 44 DVDD 43 DGND AGND1 6 AGND2 7 AD7294 AVDD2 8 TQFP TOP VIEW (Not to Scale) D2– 9 D2+ 10 42 VDRIVE 41 OPGND 40 SCL 39 SDA D1+ 11 38 AS0 D1– 12 AGND3 13 37 AS1 36 AS2 35 ALERT/BUSY AVDD3 14 34 AGND5 REFOUT/REFIN DAC 15 33 NC NC 16 05747-005 NC OFFSET IN D VOUT D DAC OUTV+ CD DAC OUT GND CD VOUT C OFFSET IN C AVDD4 AGND 4 OFFSET IN B VOUT B DAC OUTV+ AB VOUT A DAC OUT GND AB NC NC = NO CONNECT OFFSET IN A 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ཮4. ᆅগದዃ ՗7. ᆅগࠀీ௮ຎ ᆅগՊࡽ 2, 61 3, 60 1, 4, 16, 17, 32, 33, 59, 64 5, 8, 14, 25, 56, 57 ᆅগఁ‫׬‬ RS2(−), RS1(−) RS2(+), RS1(+) NC ௮ຎ ྔև‫ۉୁݴ‬ፆ૶থᆅগă ྔև‫ۉୁݴ‬ፆ૶থᆅগă փ૶থă൩က૶থኄၵᆅগă AVDD1至AVDD6 ఇె‫ۉ‬ᇸᆅগă߾ፕ‫ۉ‬უ‫ྺྷݔ‬4.5 V዁5.5 VăኄၵᆅগྺAD7294ฉ‫ڦ‬໯ᆶఇె‫ۉ‬ୟ ༵ࠃ‫ۉ‬ᇸ‫ۉ‬უăॽAVDDᇑDVDDᆅগ૶ሞᅃഐLjඓԍ໯ᆶ‫ۉ‬ᇸᆅগ‫ۉ‬࿋၎‫ڪ‬ă ᆌཚࡗᅃ߲10 μF᮳‫ۉ‬ඹࢅᅃ߲0.1 μF༩ٍ‫ۉ‬ඹ‫߳ܔ‬AVDDᆅগඁ᳘዁AGNDă 6, 7, 13, 24, 34, 55, 58 AGND1 to AGND7 ఇె‫ں‬ăAD7294ฉ໯ᆶఇె‫ۉ‬ୟ‫ڦ‬থ‫ں‬एጚ‫ۅ‬ă໯ᆶఇె๼෇႑ࡽࢅ ྔևएጚ႑ࡽ‫֖ۼ‬ቷُAGND‫ۉ‬უă໯ᆶ೿߲AGNDᆅগ‫ڟ૶ۼ‬ဣཥ‫ڦ‬AGNDೝ௬ă ൩ጀᅪLjAGND5๟DACথ‫ں‬एጚ‫ۅ‬LjᆌᆩፕDAC๼‫؜‬໯ൻ‫ۉۯ‬ୟ‫ڦ‬႓႙থ‫ۅں‬ă ૙ၙ൧઄ူLjAGNDࢅDGND‫ۉ‬უᆌԍ‫ۉڪ׼‬࿋Lj ժ൐‫ۉ‬࿋ֶ(ฯ዁ሞຨༀ‫ۉ‬უ٪ሞ൧઄้)փ‫ࡗגڥ‬0.3 Vă 9, 12 D2(−), D1(−) ࿒‫ߌد܈‬ഗఇె๼෇ăኄၵᆅগ૶‫ྔڟ‬և࿒‫ߌد܈‬ৗ༹࠶ă֖९཮45ࢅ཮46ă 10, 11 D2(+), D1(+) ࿒‫ߌد܈‬ഗఇె๼෇ăኄၵᆅগ૶‫ྔڟ‬և࿒‫ߌد܈‬ৗ༹࠶ă֖९཮45ࢅ཮46ă 15 REFOUT/REFIN DAC DACएጚ‫ۉ‬უ๼‫؜‬/๼෇ᆅগăREFOUT/REFIN DACᆅগྺ໯ᆶ຺߲DACཚ‫ࠌڢ‬ᆩă ฉ‫้ۉ‬Ljُᆅগ‫ڦ‬ఐණದዃ๟֑ᆩྔևएጚ‫ۉ‬უ(REFIN)ăႀ෇܏‫ۉ‬स٪ഗ੗๑ీాևएጚ‫ۉ‬უLj ֖९՗27ăඁ᳘‫ۉ‬ඹDŽॺᅱ220 nFDž૶থ‫ُڟ‬ᆅগLjᅜՍ‫ܔ‬एጚ‫ۉ‬უᇸ࣐؋ഗඁ᳘ă සࡕ‫ܔ‬๼‫؜‬৊ႜ࣐؋Ljሶೌాएጚ‫ۉ‬უ੗ᅜُٗᆅগइ‫ڥ‬Ljժྔेᇀဣཥ‫ڦ‬ഄᇆև‫ݴ‬ă ੗ᅜॽፌ‫ٷ‬AVDD − 2 V‫ྔڦ‬ևएጚ‫ۉ‬უ༵ࠃߴREFOUT/REFIN DACᆅগ‫ڦ‬REFOUTև‫ݴ‬ă Rev. C | Page 10 of 44 AD7294 ᆅগՊࡽ 18, 23, 26, 31 ᆅগఁ‫׬‬ OFFSET IN A዁ OFFSET IN D ௮ຎ DACఇె฿ۙ๼෇ᆅগăኄၵᆅগยዃ߳DACཚ‫ڢ‬໯Ⴔ‫ڦ‬๼‫ྷݔ؜‬ăDAC‫ڦ‬๼‫ۉ؜‬უੵ‫ྺ܈‬5 VLj ཚࡗၠኄၵᆅগ༵ࠃ฿ۙ‫ۉ‬უLj੗ᅜॽ๼‫ۉ؜‬უٗ0 V዁5 Vገ࣑‫ڟ‬ፌ‫ٷ‬10 V዁15 Vă ኄၵᆅগ੗ᅜ‫ޝ‬੣Ljُ้ᆌཚࡗ100 nF‫ۉ‬ඹ‫ܔ‬ᆅগඁ᳘዁AGNDă 19, 22, 27, 30 VOUTA዁VOUTD 20, 29 35 DAC OUT GND AB, DAC OUT GND CD DAC OUTV+ AB, DAC OUTV+ CD ALERT/BUSY ཚ‫ڢ‬A዁ཚ‫ڢ‬D‫࣐ڦ‬؋ఇెDAC๼‫؜‬ă߳DACఇె๼‫֑؜‬ᆩ๼‫ٷݣ؜‬ഗൻ‫ۯ‬Lj ੗ᅜ૧ᆩOFFSET IN xᆅগᇎᅜց‫׋‬ăDAC‫ڦ‬ፌ‫ٷ‬๼‫ۉ؜‬უੵ‫ྺ܈‬5 VLj ੗ᅜཚࡗ‫ۉ‬ೝገ࣑‫݆ݛ‬๑ፌ‫ٷ‬๼‫ۉ؜‬ೝ‫ڟٳ‬15 Vă߳๼‫؜‬਩ీ༵ࠃ10 mA‫ڦ‬ᇸ‫ࢅୁۉ‬ဌ‫ୁۉ‬Lj ժൻ‫ۯ‬10 nF޶ሜă ఇె‫ں‬ă‫ݴ‬՚๟VOUTAĂVOUTBĂVOUTCĂVOUTDฉ‫ڦ‬DAC๼‫ٷݣ؜‬ഗ‫ڦ‬ఇె‫ں‬ᆅগă 38, 37, 36 AS0, AS1, AS2 ದዃྺ‫ݏ‬஬๼‫้؜‬Ljසࡕገ࣑ኟሞ৊ႜLjሶُᆅগघऄă ຕጴஇड๼෇ăኄၵ๼෇‫ڦ‬இडጒༀࠌཞ჋ስAD7294‫܀ڦ‬ᅃ࿮ܾI2C‫ں‬኷ăၘ൧൩֖९՗34ă 39 SDA ຕጴ๼෇/๼‫؜‬ă‫ز‬ႜጺ၍ມၠຕ਍ăُਸ୑๼‫؜‬Ⴔᄲฉઙ‫ۉ‬ፆă 40 SCL 41 42 OPGND VDRIVE ‫ز‬ႜI2Cጺ၍้ዓăI2Cఇ๕ူ‫ڦ‬ຕ਍‫د‬๼໏୲ᇑ100 kHzࢅ400 kHz߾ፕఇ๕ग़ඹă ُਸ୑๼‫؜‬Ⴔᄲฉઙ‫ۉ‬ፆă I2Cথ੨‫ڦ‬ጆᆩথ‫ں‬ᆅগă இड‫ۉ‬ᇸăُᆅগ‫ۉڦ‬ᇸ‫ۉ‬უਦۨஇडথ੨‫߾ڦ‬ፕ‫ۉ‬უă‫ُܔ‬ᆅগඁ᳘዁DGNDă ُᆅগ‫ۉڦ‬უ‫ྺྷݔ‬2.7 V዁5.5 VLj੗ᅜᇑAVDDࢅDVDDփཞLj‫ڍ‬փ‫ࡗגڥ‬ඪࢆᅃኁ0.3 Vᅜฉă ยዃ๼෇ࢅ๼‫؜‬ពኵ้Ljᆌॽُᆅগ૶‫ڟ‬থ‫؜‬I2Cጺ၍‫ۉڦ‬ᇸă 43, 47 44 DGND DVDD ຕጴ‫ں‬ăُᆅগ๟໯ᆶຕጴ‫ۉ‬ୟ‫ڦ‬থ‫ں‬ᆅগă இड‫ۉ‬ᇸă߾ፕ‫ۉ‬უ‫ྺྷݔ‬4.5 V዁5.5 VăኄၵᆅগྺAD7294ฉ‫ڦ‬໯ᆶຕጴ‫ۉ‬ୟ༵ࠃ‫ۉ‬ᇸ‫ۉ‬უă ॽAVDDᇑDVDDᆅগ૶ሞᅃഐLjඓԍ໯ᆶ‫ۉ‬ᇸᆅগ‫ۉ‬࿋၎‫ڪ‬ă ཚࡗ10 μF᮳‫ۉ‬ඹࢅ0.1 μF༩ٍ‫ۉ‬ඹ‫ۉُܔ‬ᇸඁ᳘዁DGNDă 46, 45 ࠤቱԲডഗ๼‫؜‬ăኄၵᆅগ૶‫ٷݣߌدୁۉ܋ߛڟ‬ഗă 48 ISENSE1 OVERRANGE, ISENSE2 OVERRANGE DAC HIGH-Z 49, 50, 51, 52 VIN3዁VIN0 53 REFOUT/REFINADC 54 DCAP 62, 63 VPP1, VPP2 21, 28 ఇె‫ۉ‬ᇸă‫ݴ‬՚๟VOUTAĂVOUTBĂVOUTCĂVOUTDฉ‫ڦ‬DAC๼‫ٷݣ؜‬ഗ‫ڦ‬ఇె‫ۉ‬ᇸᆅগă ߾ፕ‫ۉ‬უ‫ྺྷݔ‬4.5 V዁16.5 Vă ຕጴ๼‫؜‬ă੗ᅜሞದዃस٪ഗዐॽഄยዃྺ༵ႝई‫ݏ‬஬๼‫ీࠀ؜‬ă ໲๟ਸ୑๼‫؜‬LjႴᄲᅃ߲ྔևฉઙ‫ۉ‬ፆă ‫ړ‬ದዃྺ༵ႝ้Ljُᆅগᆩፕ‫ג‬ଉ‫ײ‬ኸ๖Lj‫ړ‬ገ࣑঳ࡕྵ‫ݒ‬DATAHIGHईDATALOWस٪ഗኵ้Lj ৽ࣷघऄă֖९“༵ႝጒༀस٪ഗ”և‫ݴ‬ă DAC๼‫؜‬ฉ‫ߛڦ‬ፆੇ੦዆ă‫ُړ‬ᆅগยዃྺߛஇड‫ۉ‬ೝ้LjDAC๼‫ॽ؜‬ԥยዃྺ OFFSET IN xᆅগฉ‫ۉڦ‬ೝăُᆅগਏᆶ1 MΩాևူઙ‫ۉ‬ፆă ‫ݥ‬ጆᆩADCఇె๼෇ăኄၵᆅগ੗ದዃྺ຺߲‫܋ڇ‬ཚ‫ڢ‬ईଇ‫ܔ‬ኈֶ‫ݴ‬ఇె๼෇ཚ‫ڢ‬ă ၘ൧൩֖९՗1ࢅ՗13ă ADCएጚ‫ۉ‬უ๼෇/๼‫؜‬ᆅগăREFOUT/REFIN ADCᆅগྺADC༵ࠃएጚ‫ۉ‬უᇸă ฉ‫้ۉ‬Ljُᆅগ‫ڦ‬ఐණದዃ๟֑ᆩྔևएጚ‫ۉ‬უ(REFIN)ăႀ෇܏‫ۉ‬स٪ഗ੗๑ీాևएጚ‫ۉ‬უLj ֖९՗27ăඁ᳘‫ۉ‬ඹ(ॺᅱ220 nF)૶থ‫ُڟ‬ᆅগLjᅜՍ‫ܔ‬एጚ‫ۉ‬უᇸ࣐؋ඁ᳘ă සࡕ‫ܔ‬๼‫؜‬৊ႜ࣐؋Ljሶೌాएጚ‫ۉ‬უ੗ᅜُٗᆅগइ‫ڥ‬Ljժྔेᇀဣཥ‫ڦ‬ഄᇆև‫ݴ‬ă ੗ᅜॽፌ‫ٷ‬2.5 V‫ྔڦ‬ևएጚ‫ۉ‬უ༵ࠃߴREFOUT/REFIN ADCᆅগ‫ڦ‬REFOUTև‫ݴ‬ă ాև࿒‫ߌد܈‬ഗ‫ྔڦ‬ևඁ᳘‫ۉ‬ඹ๼෇ăཚࡗᅃ߲0.1 μF‫ۉ‬ඹ‫ُܔ‬ᆅগඁ᳘዁AGNDă ኟ‫߾׉‬ፕ้Lj‫ۆ‬႙‫ۉ‬უྺ3.7 Vă ‫ߌدୁۉ‬ഗ‫ۉ‬ᇸᆅগăߛ‫ٷݣߌدୁۉ܋‬ഗ‫ۉڦ‬ᇸᆅগă߾ፕ‫ۉ‬უ‫ྺྷݔ‬AVDD዁59.4 Vă ‫ۉُܔ‬ᇸඁ᳘዁AGNDă֖९“‫ୁۉ‬ॠ֪୳հ”և‫ݴ‬ă Rev. C | Page 11 of 44 AD7294 ‫ۆ‬႙߾ፕ༬Ⴀ 20 8192 POINT FFT AVDD = DVDD = 5V VDRIVE = 5V, VREF RANGE FSAMPLE = 22.22kSPS FIN = 10kHz, FSCLK = 400kHz SINGLE ENDED SNR = 71dB, THD = –82dB –20 –40 –60 –40 –60 –80 –80 –100 –100 –120 0 2000 4000 6000 8000 10000 FREQUENCY (kHz) –120 05747-088 AMPLITUDE (dB) –20 8192 POINT FFT AVDD = DVDD = 5V VDRIVE = 5V, 2VREF RANGE FSAMPLE = 22.22kSPS FIN = 10kHz, FSCLK = 400kHz DIFFERENTIAL SNR = 73dB, THD = –82dB 0 AMPLITUDE (dB) 0 0 2000 6000 1.0 8192 POINT FFT AVDD = DVDD = 5V VDRIVE = 5V, 2VREF RANGE FSAMPLE = 22.22kSPS FIN = 10kHz, FSCLK = 400kHz SINGLE ENDED SNR = 72dB, THD = –80dB TA = 25°C VDRIVE = 5V, VREF RANGE VREF = 2.5V VDD = 5V SINGLE-ENDED 0.8 0.6 0.4 INL (LSB) –20 10000 ཮8. ႑ሯԲǖֶ‫ݴ‬Ă2 × VREF ‫ྷݔ‬ 20 0 8000 FREQUENCY (kHz) ཮5. ႑ሯԲǖ‫܋ڇ‬ĂVREF ‫ྷݔ‬ AMPLITUDE (dB) 4000 05747-086 20 –40 –60 0.2 0 –0.2 –0.4 –80 –0.6 –100 –0.8 2000 4000 6000 8000 10000 FREQUENCY (kHz) –1.0 0 256 512 ཮9. ADC INLǖ‫܋ڇ‬ĂVREF ‫ྷݔ‬ ཮6. ႑ሯԲǖ‫܋ڇ‬Ă2 × VREF ‫ྷݔ‬ 1.0 20 8192 POINT FFT AVDD = DVDD = 5V VDRIVE = 5V, VREF RANGE FSAMPLE = 22.22kSPS FIN = 10kHz, FSCLK = 400kHz DIFFERENTIAL SNR = 72dB, THD = –86dB 0 TA = 25°C VDRIVE = 5V, VREF RANGE VREF = 2.5V VDD = 5V SINGLE-ENDED 0.8 0.6 DNL (LSB) 0.4 –40 –60 0.2 0 –0.2 –0.4 –80 –0.6 –100 –0.8 0 2000 4000 6000 8000 FREQUENCY (kHz) 10000 –1.0 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE ཮7. ႑ሯԲǖֶ‫ݴ‬ĂVREF ‫ྷݔ‬ ཮10. ADC DNLǖ‫܋ڇ‬ĂVREF ‫ྷݔ‬ Rev. C | Page 12 of 44 05747-072 –120 05747-087 AMPLITUDE (dB) –20 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE 05747-077 0 05747-089 –120 AD7294  0.6 0.6 0.4 0.2 0.2 INL (LSB) 0.4 0 –0.2 0 –0.2 –0.4 –0.4 –0.6 –0.6 –0.8 –0.8 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE –1.0 05747-078 –1.0 TA = 25°C VDRIVE = 5V, VREF RANGE VREF = 5V VDD = 5V DIFFERENTIAL 0.8 0 256 512 CODE ཮11. ADC INLǖ‫܋ڇ‬Ă2 ×VREF ‫ྷݔ‬ 1.0 0.6 1.0 0.6 0.4 0.2 0.2 DNL (LSB) 0.4 0 –0.2 0 –0.2 –0.4 –0.4 –0.6 –0.6 –0.8 –0.8 –1.0 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 TA = = 25°C T A 25°C VDRIVE = 5V, 2VREF RANGE V REF = 2.5V VREF==5V 2.5V V DD VDD = 5V DIFFERENTIAL DIFFERENTIAL 0.8 –1.0 05747-073 0 256 512 CODE CODE ཮12. ADC DNLǖ‫܋ڇ‬Ă2 ×VREF ‫ྷݔ‬ 1.0 0.6 1.0 TA = 25°C VDRIVE = 5V, 2VREF RANGE VREF = 5V VDD = 5V DIFFERENTIAL 0.8 0.6 0.4 0.2 0.2 DNL (LSB) 0.4 0 –0.2 0 –0.2 –0.4 –0.4 –0.6 –0.6 –0.8 –0.8 –1.0 –1.0 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE 05747-075 INL (LSB) ཮15. ADC DNLǖֶ‫ݴ‬Ă2 ×VREF ‫ྷݔ‬ TA = 25°C VDRIVE = 5V, VREF RANGE VREF = 2.5V VDD = 5V DIFFERENTIAL 0.8 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 ཮13. ADC INLǖֶ‫ݴ‬ĂVREF ‫ྷݔ‬ 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE ཮16. ADC DNLǖֶ‫ݴ‬Ă2 ×VREF ‫ྷݔ‬ Rev. C | Page 13 of 44 05747-071 DNL (LSB) ཮14. ADC INLǖֶ‫ݴ‬ĂVREF ‫ྷݔ‬ TA = 25°C VDRIVE = 5V, 2VREF RANGE VREF = 5V VDD = 5V SINGLE-ENDED 0.8 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 05747-076 0.8 INL (LSB) 1.0 TA = 25°C VDRIVE = 5V, 2VREF RANGE VREF = 2.5V VDD = 5V SINGLE-ENDED 05747-070 1.0 AD7294 1.5 0.6 1.0 AVDD = DVDD = 5V VDRIVE = 5V, INTERNAL REF, OFFSET IN A/B/C/D = FLOATING 0.4 MAX INL 0.5 0.2 DNL (LSB) INL (LSB) 0 TA = 25°C VDRIVE = 5V, VREF RANGE VDD = 5V SINGLE-ENDED I2C MODE 400kHz –0.5 –1.0 0 –0.2 –1.5 MIN INL 0 1 2 3 4 5 6 REFERENCE VOLTAGE (V) –0.6 05747-093 –2.5 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE ཮17. ADC INLᇑएጚ‫ۉ‬უ‫࠲ڦ‬ဣ 05747-080 –0.4 –2.044 44 ཮20. DAC DNL 0.8 20 15 0.6 MAX DNL 10 OUTPUT (μV) TA = 25°C VDRIVE = 5V, VREF RANGE VDD = 5V SINGLE-ENDED I2C MODE 400kHz 0.2 0 –0.2 MIN DNL 5 0 –5 –10 –0.4 –15 0 1 2 3 4 5 6 REFERENCE VOLTAGE (V) –20 05747-094 –0.6 0 3 4 5 6 7 8 9 10 ཮21. 0.1 Hz዁10 Hz DAC๼‫؜‬ሯำ(ஓྺ800) 5.0 AVDD = DVDD = 5V VDRIVE = 5V, INTERNAL REF, OFFSET IN A/B/C/D = FLOATING 1.5 2 TIME (s) ཮18. ADC DNLᇑएጚ‫ۉ‬უ‫࠲ڦ‬ဣ 2.0 1 05747-097 DNL (LSB) 0.4 64pF 1nF 10nF 4.5 4.0 1.0 DAC OUTPUT (V) 3.5 0 –0.5 3.0 2.5 2.0 1.5 –1.0 1.0 –1.5 –2.0 0 256 512 768 1280 1792 2304 2816 3328 3840 1024 1536 2048 2560 3072 3584 4096 CODE ཮19. DAC INL 0 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 TIME (μs) ཮22. ¼዁¾๼‫ۉ؜‬უօ৊‫ॺڦ‬૬้क़ Rev. C | Page 14 of 44 8 9 10 05747-084 0.5 05747-079 INL (LSB) 0.5 AD7294  100 64pF 1nF 10nF 0.4 0 –0.2 –0.4 –0.6 60 40 20 0 –20 –40 AVDD = DVDD = 5V OFFSET IN = FLOATING DAC OUT V = 15V VDRIVE = 5V, INTERNAL REF –60 –80 0 8 10 6 12 414 162 18 20 TIME (μs) –100 –50 05747-085 –0.8 TEMPERATURE READING (°C) 0.6 0.5 0.4 0.3 AVDD = DVDD = 5V OFFSET IN = FLOATING DAC OUT V = 15V VDRIVE = 5V, INTERNAL REF 10 20 30 40 50 0 10 15 20 25 30 35 40 SINK CURRENT (mA) 40 35 30 25 20 –5 0 5 10 15 05747-064 0.1 45 05747-090 0.2 20 TIME (Seconds) ཮24. DACဌ‫ୁۉ‬ǖ๼෇ஓ = x000ĂVOUT = 0 V ཮27. AD7294‫ܔ‬ඤ؋ऍ‫ڦ‬ၚᆌ(๑ᆩ2N3906Lj 2N3906ዃᇀওӴᆳ֣ዐ) 55 0 DAC A DAC B DAC C DAC D –0.1 –0.2 EXTERNAL 50 TEMPERATURE (°C) –0.3 –0.4 –0.5 –0.6 –0.7 AVDD = DVDD = 5V OFFSET IN = FLOATING DAC OUT V = 15V VDRIVE = 5V, INTERNAL REF –0.8 –0.9 –1.0 0 5 10 15 45 INTERNAL 40 35 30 20 25 30 35 SOURCE CURRENT (mA) 40 05747-091 VOUT – (V+) 0 50 0.7 5 –10 55 DAC A DAC B DAC C DAC D 0 –20 ཮26. DAC๼‫ۉ؜‬უᇑ޶ሜ‫࠲ڦୁۉ‬ဣ(๼෇ஓ = x800) 1.0 0.8 –30 LOAD CURRENT (mA) ཮23. ‫¼ڦٷݣ‬዁¾๼‫ۉ؜‬უօ৊ॺ૬้क़ 0.9 –40 25 –5 AD7294 IN SOCKET ON 200mm × 100mm 2-LAYER FR-4 PCB 0 5 10 15 20 25 30 35 40 45 50 55 TIME (Seconds) ཮28. ‫ܔ‬ඤ؋ऍ‫ڦ‬ၚᆌ(ٗ๪࿒‫ڟ‬50°CওӴᆳ࿒Lj AD7294ࢅ2N3906਩ዃᇀওӴᆳ֣ዐ) ཮25. DACᇸ‫ୁۉ‬ǖ๼෇ஓ = x000ĂVOUT = 0 V Rev. C | Page 15 of 44 60 05747-066 (%) 0.2 VOUT (V) DAC A DAC B DAC C DAC D 80 CHANGE IN OUTPUT VOLTAGE (mV) 0.6 05747-092 0.8 AD7294 0 –50 44 –0.2 –55 –0.4 –60 –65 –0.8 PSRR (dB) –1.0 –1.2 –75 –80 –1.4 –85 –1.6 –90 –1.8 0 0.5 1.0 1.5 2.0 2.5 CAPACITANCE FROM D+ TO D– (nF) –95 1k 05747-065 –2.0 –70 10k 100k 1M 10M FREQUENCY (Hz) 05747-102 ERROR (°C) –0.6 ཮32. ISENSE ‫ۉ‬ᇸᅞ዆Բᇑ‫ۉ‬ᇸ࿖հೕ୲‫࠲ڦ‬ဣ (࿮VPP ‫ۉ‬ᇸඁ᳘‫ۉ‬ඹLj500 mV࿖հ) ࿒‫܈‬ဃֶᇑD+ĂD-क़‫ۉ‬ඹ‫࠲ڦ‬ဣ 15 –50 10 –60 5 CMRR (dB) –5 –90 –10 –100 –15 0 2000 4000 6000 8000 10000 12000 SERIES RESISTANCE (Ω) –110 05747-062 –20 0 –5 –10 –15 –20 –25 –30 –35 –40 100k 1M FREQUENCY (Hz) 10M 100M 05747-096 –45 10k 10 100 1k 10k 100k RIPPLE FREQUENCY (Hz) 5 –50 1k 1 1M 10M 100M ཮33. ISENSEࠌఇᅞ዆Բᇑ࿖հೕ୲‫࠲ڦ‬ဣ(400 mV‫ރރ‬ኵ࿖հ) ཮30. 15߲‫ۆ‬႙ഗॲ‫ڦ‬࿒‫܈‬ဃֶᇑ‫ۉ૴ز‬ፆ‫࠲ڦ‬ဣ AMPLITUDE (dB) –80 05747-103 ERROR (°C) –70 0 ཮31. AD7294ߛ‫ߌدୁۉ܋‬ഗ‫ڦ‬ೕ୲ၚᆌ Rev. C | Page 16 of 44 AD7294 ຍᇕ DACຍᇕ Բኵ‫ٷڦ‬ၭൽਦᇀଉࣅपຕLjଉࣅपຕሁ‫ܠ‬Ljଉࣅሯำ৽ ၎‫ܔ‬৛‫!܈‬ ሁၭă‫ܔ‬ᇀᅃ߲ኟ၀հ๼෇‫ڦ‬૙ၙN࿋ገ࣑ഗLj႑భԲ૙ ‫ܔ‬ᇀDACLj၎‫ܔ‬৛‫܈‬ईओ‫ݥݴ‬၍Ⴀ(INL)๟ኸDAC๼‫؜‬ᇑ ஃኵऺ໙ࠅ๕ྺǖ ཚࡗDAC‫ࡧڿدڦۅ܋‬ຕ኱၍ኮक़‫ڦ‬ፌ‫ٷ‬ೋֶLj‫ڇ‬࿋ྺ ! LSBă ႑భԲ = (6.02 N + 1.76) dB ᅺُLj12࿋ገ࣑ഗ‫ڦ‬SINAD૙ஃኵྺ74 dBă ྲ‫ݥݴ‬၍Ⴀ! ྲ‫ݥݴ‬၍Ⴀ(DNL)๟ኸඪᅪଇ߲၎ତஓኮक़໯֪‫ڥ‬Վࣅኵ ᇑ૙ၙ‫ڦ‬1 LSBՎࣅኵኮक़‫ֶڦ‬ᅴăፌ‫ٷ‬±1 LSB‫ݴྲۨܮڦ‬ ጺၿհ฿ኈ(THD) ໯ᆶၿհ਩‫ࢅߵݛ‬ᇑएհ‫ڦ‬Բኵă‫ܔ‬ᇀAD7294Ljഄۨᅭྺ ‫ݥ‬၍Ⴀ੗ඓԍ‫ۙڇ‬ႠăԨDACཚࡗยऺԍኤ‫ۙڇ‬Ⴀă THD(db) = 20log ଭ‫پ‬ஓဃֶ! ଭ‫پ‬ஓဃֶ࢚ଉॽଭ‫ۉ‬ೝஓ(0x0000)ሜ෇DACस٪ഗ้‫ڦ‬๼ ‫؜‬ဃֶă૙ၙ൧઄ူLj๼‫؜‬ᆌྺ0 VăሞAD7294ዐLjଭ‫پ‬ஓ ဃֶ๔ዕྺኟኵLjᅺྺDAC๼‫؜‬փీ‫گ‬ᇀ0 Văଭ‫پ‬ஓဃֶ V 2 2 + V3 2 + V 4 2 + V 5 2 + V 6 2 V1 ഄዐǖV1๟एհ‫ޗ‬ኵ‫ڦ‬਩‫ߵݛ‬ኵǗV2ĂV3ĂV4ĂV5ࢅV6๟ ْܾ‫ْୃڟ‬ၿհ‫ޗ‬ኵ‫ڦ‬਩‫ߵݛ‬ኵă ‫ރ‬ኵၿհईሗොሯำ! ሞADC๼‫؜‬ೕ೷)ፌߛ‫ٳ‬fS/2Lj኱ୁ႑ࡽ‫*ྔأ‬ዐLjူᅃ߲ፌ ᆩmV՗๖ă ‫ݴٷ‬ଉ‫ڦ‬਩‫ߵݛ‬ኵᇑएհ਩‫ߵݛ‬ኵ‫ڦ‬Բăཚ‫׉‬൧઄ူLjُ ஢ଉ‫ײ‬ဃֶ! ஢ଉ‫ײ‬ဃֶ࢚ଉॽ஢ଉ‫ײ‬ஓ(0xFFFF)ሜ෇DACस٪ഗ้‫ڦ‬ ๼‫؜‬ဃֶă૙ၙ൧઄ူLj๼‫؜‬ᆌྺVDD − 1 LSBă஢ଉ‫ײ‬ဃֶ ᆩmV՗๖ă ֖ຕኵᆯೕ೷ా‫ڦ‬ፌ‫ٷ‬ၿհਦۨLj‫ܔڍ‬ᇀၿհჷுᇀԨ‫ڹ‬ ሯำా‫ڦ‬ADCLj໲ྺሯำ‫ރ‬ኵă ओ‫ݥݴ‬၍Ⴀ! ADC‫ࡧڿد‬ຕᇑᅃཉཚࡗADC‫ࡧڿد‬ຕ‫ڦۅ܋‬኱၍‫ڦ‬ፌ‫ٷ‬ ሺᅮဃֶ! ሺᅮဃֶ๟࢚ଉDACଉ‫ײ‬ဃֶ‫ڦ‬ኸՔă໲๟ኸDAC‫ڿد‬༬ Ⴀ‫ڦ‬ၽ୲ᇑ૙ၙኵኮक़‫ڦ‬ೋֶLjᆩ஢ଉ‫ڦྷݔײ‬ӥ‫ݴ‬Բ՗ ๖ă ೋֶă‫ࡧڿد‬ຕᆶଇ߲‫ۅ܋‬Ljഐ‫ۅ‬ሞ‫گ‬ᇀ‫ڼ‬ᅃ߲ஓገ࣑‫ڦ‬ 1 LSB‫ڦت‬ଭ‫پ‬ஓLjዕ‫ۅ‬ሞߛᇀፌࢫᅃ߲ஓገ࣑‫ڦ‬1 LSB‫ڦت‬ ஢ଉ‫ײ‬ă ྲ‫ݥݴ‬၍Ⴀ! ጺ‫ۙݥ‬ኝဃֶ! ጺ‫ۙݥ‬ኝဃֶ(TUE)࢚ଉԈઔ໯ᆶဃֶሞా‫ڦ‬ጺ๼‫؜‬ဃ ֶă ADCዐඪᅪଇ߲၎ତஓኮक़໯֪‫ڥ‬Վࣅኵᇑ૙ၙ‫ڦ‬1 LSBՎ ࣅኵኮक़‫ֶڦ‬ᅴă ฿ۙဃֶ! ଭ‫پ‬ஓဃֶ೏ᅎ! ଭ‫پ‬ஓဃֶ೏ᅎ࢚ଉଭ‫پ‬ஓဃֶໜ࿒‫ڦ܈‬ՎࣅLjᆩμV/°C ՗๖ă ‫ڼ‬ᅃ߲ஓገ࣑)00…000‫ڟ‬00…001*ᇑ૙ၙኵ)नAGND + 1 LSB* ‫ڦ‬ೋֶă ฿ۙဃֶ೅ದ! ሺᅮဃֶ೏ᅎ! ሺᅮဃֶ೏ᅎ࢚ଉሺᅮဃֶໜ࿒‫ڦ܈‬ՎࣅLjᆩ(஢ଉ‫ྷݔײ‬ ඪࢆଇ߲ཚ‫ڢ‬ኮक़฿ۙဃֶ‫ֶڦ‬ᅴă ሺᅮဃֶ! ‫ڦ‬ppm)/°C՗๖ă ၯኟ฿ۙဃֶኮࢫLjፌࢫᅃ߲ஓገ࣑)111…110‫ڟ‬111… ADCຍᇕ 111*ᇑ૙ၙኵ)नREFIN − 1 LSB*‫ڦ‬ೋֶă ႑భԲ(SINAD) ሞADC๼‫ڦڥ֪܋؜‬႑ࡽ‫ܔ‬ሯำत฿ኈԲăኄ૛‫ڦ‬႑ࡽ๟ ሺᅮဃֶ೅ದ! एհ‫ڦ‬਩‫ޗߵݛ‬ኵăሯำྺ໯ᆶ‫֑ڟٳ‬ᄣೕ୲ᅃӷ)fS/2Lj ඪࢆଇ߲ཚ‫ڢ‬ኮक़ሺᅮဃֶ‫ֶڦ‬ᅴă ኱ୁ႑ࡽ‫ݥڦ*ྔأ‬एհ႑ࡽኮࢅăሞຕጴࣅࡗ‫ײ‬ዐLjኄ߲ Rev. C | Page 17 of 44 AD7294 ߾ፕᇱ૙ 1LSB = 2 × VREF /4096 ADC߁ຎ 011...111 AD7294༵ࠃߴᆩࢽᅃ߲9ཚ‫ܠڢ‬ୟްᆩഗĂᅃ߲ೌా֑ᄣ 011...110 ๼෇‫ྷݔ‬੗ሞ0 V዁VREFई0 V዁2 × VREFኮक़৊ႜ჋ስLj੗ದ ዃྺ‫܋ڇ‬ईֶ‫ݴ‬ఇె๼෇ăAD7294ాዃ2.5 Vೌాएጚ‫ۉ‬უLj Ⴔᆩྔևएጚ‫ۉ‬უ้Lj੗্ᆩُೌాएጚ‫ۉ‬უăසࡕဣཥ ADC CODE ԍ‫׼‬ഗᅜतᅃ߲एᇀඹႠDAC‫ڦ‬ደْ԰ৎ႙ADCăഄఇె 000...001 000...000 111...111 ഄ໲‫ݛں‬Ⴔᄲ๑ᆩాևADCएጚ‫ۉ‬უLjሶ๯ံՂႷ࣐؋๼ 100...010 ‫؜‬ă 100...000 –VREF + 1LSB VREF – 1LSB ߳ዖ๴॔੦൐‫ݥ‬ጆᆩ๼෇႑ࡽঢ়ࡗ‫ܠ‬ୟްᆩഗ৊෇ADCă +VREF – 1LSB ANALOG INPUT AD7294ਏᆶ຺߲‫ݥ‬ጆᆩఇె๼෇ཚ‫ڢ‬ǖVIN0዁VIN3ăኄၵ 05747-017 100...001 ཮35. ֶ‫ڿدݴ‬༬Ⴀ(VREF ± VREF ๼෇‫)ྷݔ‬ ཚ‫ڢ‬ሎႹᅜ‫܋ڇ‬Ăֶ‫ࢅݴ‬࿁ֶ‫ݴ‬ఇ๕֪ଉ߳ዖဣཥ႑ࡽă ‫ܔ‬ᇀ‫܋ڇ‬ఇ๕ူ‫ڦ‬VIN0዁VIN3Lj๼‫؜‬ஓྺՔጚܾ৊዆Ljഄ ADC‫ࡧڿد‬ຕ ໯ยऺ‫ڦ‬ஓገ࣑ሞ૶ჄLSBኝຕኵฉ(न1 LSBĂ2 LSB‫)ڪڪ‬৊ ႜă‫܋ڇ‬ఇ๕ူLj‫ړ‬๑ᆩ0 V዁V REF ‫้ྷݔ‬LjLSB‫ٷ‬ၭྺ ዐǖ VIN = 0 V้LjDOUT=x000ǗVIN=VREF−1 LSB้LjDOUT=xFFF V REF /4096Ǘ‫ړ‬๑ᆩ0 V዁2 × V REF ‫้ྷݔ‬LjLSB‫ٷ‬ၭྺ2 × ֶ‫ݴ‬ఇ๕ူLj๼‫؜‬ஓྺܾ৊዆ցஓLjഄዐǖ VREF/4096ă๼‫؜‬Քጚܾ৊዆Պஓ้LjADC‫ڦ‬૙ၙ‫ڿد‬༬Ⴀ VIN+ − VIN− = 0 V้LjDOUT = x00 ස཮34໯๖ă VIN+ − VIN− = VREF − 1 LSB้LjDOUT = x7FF VIN+ − VIN− = −VREF้LjDOUT = x800 ཚ‫ڢ‬5ࢅཚ‫ڢ‬6(‫ߌدୁۉ‬ഗ๼෇)ྺܾ৊዆ցஓLjഄዐǖ VIN+ − VIN− = 0 mV้LjDOUT = x000 111...111 VIN+ − VIN− = VREF/12.5 − 1 LSB้LjDOUT = x7FF 111...110 ADC CODE VIN+ − VIN− = −VREF/12.5้LjDOUT = x800 ཚ‫ڢ‬7዁ཚ‫ڢ‬9(࿒‫ߌد܈‬ഗ๼෇)ྺܾ৊዆ցஓLjLSB‫ڪ‬ᇀ 111...000 1LSB = VREF /4096 011...111 0.25°CLjഄዐǖ 000...010 TIN = +255.75°C้LjDOUT = x7FF TIN = 0°C้LjDOUT = x000 000...001 TIN = −256°C้LjDOUT = x800 000...000 VREF – 1LSB 0V 1LSB ఇె๼෇! NOTE 1. VREF IS EITHER VREF OR 2 × VREF . 05747-016 ANALOG INPUT ཮34. ‫ڿد܋ڇ‬༬Ⴀ ੗ᅜॽഄದዃྺଇୟ‫܋ڇ‬๼෇Ăଇ߲࿁ֶ‫ݴ‬ཚ‫ڢ‬ईଇ߲ඇ ֶ‫ݴ‬ཚ‫ڢ‬ăၘ൧൩֖९“स٪ഗยዃ”և‫ݴ‬ă ֶ‫ݴ‬ఇ๕ူLj‫ړ‬๑ᆩ0 V዁V REF ‫้ྷ ݔ‬LjLSB‫ٷ‬ၭྺ2 × V REF /4096Ǘ‫ړ‬๑ᆩ0 V዁2 × V REF ‫้ྷݔ‬LjLSB‫ٷ‬ၭྺ4 × VREF/4096ă๼‫ܾ؜‬৊዆ցஓՊஓ้LjADC‫ڦ‬૙ၙ‫ڿد‬༬Ⴀ ස཮35໯๖(2 × VREF‫)ྷݔ‬ă AD7294ࠌᆶ຺ୟఇె๼෇ăߵ਍ದዃस٪ഗ‫ڦ‬ยዃփཞLj ‫܋ڇ‬ఇ๕! AD7294੗ᅜਏᆶ4߲‫܋ڇ‬ఇె๼෇ཚ‫ڢ‬ăሞ႑ࡽᇸਏᆶߛ ፆੇ‫ڦ‬ᆌᆩዐLjॺᅱံ‫ܔ‬ఇె๼෇৊ႜ࣐؋Ljምॽഄแे ᇀADCăఇె๼෇‫ྷݔ‬੗ᅜཚࡗՊ‫ײ‬ยዃྺ0 V዁VREFई0 V ዁2 × VREFăሞ2 × VREFఇ๕ူLj๼෇ࣷံ‫أ‬ᅜ2Lj඗ࢫምኴ ႜገ࣑ă൩ጀᅪLj၎‫ܔ‬ᇀADCฉ‫ڦ‬GND‫ۉڦ‬უփ‫ࡗגڥ‬ AVDDă සࡕᄲ֑ᄣ‫ڦ‬ఇె๼෇႑ࡽྺມटႠLjሶ੗ᅜ૧ᆩADC‫ڦ‬ ాևएጚ‫ۉ‬უٗྔև๑ُ႑ࡽ݀ิೋዃLjᅜՍਏᆶ๢ࢇ Rev. C | Page 18 of 44 AD7294 ADC‫ڦ‬ኟඓ߭๕ă཮36၂๖ADCሞ‫܋ڇ‬ఇ๕ူ߾ፕ้‫ۆڦ‬ ႙૶থ཮ă ገ࣑݀ิ้Ljࠌఇ๴‫ڟ‬ᅞ዆Lj໯ׂิ‫ڦ‬႑ࡽबࢭ࿮ሯำLj +2.5V ഄ‫ޗ‬ኵ‫ྺྷݔ‬−VREF዁+VREFLjᇑܾ৊዆ցஓ߭๕‫ڦ‬ຕጴ๼ R +1.25V 0V ྺକԍኤAD7294‫ీࠀڦ‬Ljࠌఇ‫ۉ‬უՂႷሞُ‫ాྷݔ‬ă ‫؜‬ஓ−2048዁+2047၎‫ܔ‬ᆌă 0V R VIN VIN0 3R –1.25V 1 AD7294 සࡕ๑ᆩ2 × V REF‫ྷݔ‬Ljሶ๼෇႑ࡽ‫ޗ‬ኵ‫ྺྷݔ‬−2 × V REF R (VIN+ = 0 V, VIN− = VREF)዁+2 × VREF (VIN− = 0 V, VIN+ = VREF)ă VIN3 REFOUT ADC ൻ‫ݴֶۯ‬๼෇! ՗13ዐVIN0዁VIN3໯༵ࠃ‫ݴֶڦ‬ఇ๕ᄲ൱֑ᆩଇ߲‫ޗ‬ኵ၎ 0.47μF 1ADDITIONAL PINS OMITTED FOR CLARITY. 05747-018 ‫ڪ‬Ă၎࿋၎ֶ180°‫ڦ‬႑ࡽཞ้ൻ‫ۯ‬VIN+ࢅVIN−ăፕྺఇె๼ ཮36. ‫܋ڇ‬ఇ๕૶থ཮ ෇ዐኵ‫ࠌڦ‬ఇ‫ۉ‬უՂႷሞྔևยዃăࠌఇ‫ྷݔ‬ᆯVREFĂ‫ۉ‬ ᇸࢅᆩઠൻ‫ۯ‬ఇె๼෇‫ڦ‬༬ۨ‫ٷݣ‬ഗࠌཞਦۨă࿮ஃ๟঍ ୁ๼෇࣏๟኱ୁ๼෇Ljֶ‫߾ݴ‬ፕఇ๕਩੗ሞড੻‫ڦ‬ೕ୲‫ݔ‬ ֶ‫ݴ‬ఇ๕ AD7294੗ᅜਏᆶ2ֶ߲‫ݴ‬ఇె๼෇‫ܔ‬ăֶ‫ݴ‬႑ࡽሞగၵ‫ݛ‬ ௬ᆫᇀ‫܋ڇ‬႑ࡽLj૩සǖएᇀഗॲࠌఇᅞ዆‫ੇڦ‬ඡ‫߸܈‬ ߛLjܸ൐߀฀฿ኈႠీă཮37ۨᅭକAD7294‫ڦ‬ඇֶ‫ݴ‬ఇె ྷా༵ࠃፌॅ‫ڦ‬ጺၿհ฿ኈ(THD)Ⴀీăժ‫ݥ‬໯ᆶᆌᆩ‫ۼ‬ ࣷᇨံۙ૙႑ࡽᅜࠃֶ‫֡ݴ‬ፕLjᅺُঢ়‫׉‬Ⴔᄲኴႜ‫܋ڇ‬዁ ֶ‫ݴ‬ገ࣑ă ๑ᆩሏ໙‫ٷݣ‬ഗ‫!ܔ‬ ๼෇ă ੗ᅜ૧ᆩᅃሏ໙‫ٷݣ‬ഗ‫ܔ‬Ljॽֶ‫ݴ‬႑ࡽ኱থ᳘ࢇ዁AD7294 VREF p-p ఇె๼෇‫ܔ‬ኮᅃă཮38໯๖‫ۉڦ‬ୟದዃຫ௽සࢆ๑ᆩᅃ߲ VIN+ AD72941 VREF p-p 1ADDITIONAL ມཚ‫ڢ‬ሏ໙‫ٷݣ‬ഗLjॽ‫܋ڇ‬ມटႠ႑ࡽገ࣑ྺֶ‫ڇݴ‬टႠ VIN– PINS OMITTED FOR CLARITY. ๼෇႑ࡽă 05747-019 COMMON-MODE VOLTAGE แेᇀA‫ۉڦۅ‬უยዃࠌఇ‫ۉ‬უăස཮38໯๖LjA‫ۅ‬ᇑएጚ ‫ۉ‬უᇸ၎૶Lj‫ڍ‬ႴጀᅪLjA‫ڦۅ‬๼෇੗ᅜᆩࠌఇ‫ڦాྷݔ‬ ཮37. ֶ‫ݴ‬๼෇ۨᅭ ֶ‫ݴ‬႑ࡽ‫ޗڦ‬ኵྺֶ߳‫ܔݴ‬ዐ๼෇ᆅগVIN+ࢅ๼෇ᆅগVIN− ‫ڦ‬႑ࡽֶኵ(नVIN+ − VIN−)ăገ࣑঳ࡕຕ਍ᅜܾ৊዆ցஓႚ ๕٪‫ئ‬ሞ঳ࡕस٪ഗዐăᆩଇ߲၎࿋၎ֶ180°‫ڦ‬႑ࡽཞ้ ඪࢆኵઠยዃࠌఇ‫ۉ‬უăAD8022๟ᅃ੼ࢇ๢‫ڦ‬ມཚ‫ڢ‬ሏ໙ ‫ٷݣ‬ഗLj੗ᅜᆩሞُದዃዐྺAD7294༵ࠃֶ‫ݴ‬ൻ‫ۯ‬ă ჋ስሏ໙‫ٷݣ‬ഗႴ৉ัLjᆌߵ਍໯Ⴔ‫ۉڦ‬ᇸࢅဣཥႠీణ ൻ‫ۯ‬VIN0ࢅVIN1Lj߳႑ࡽ‫ޗڦ‬ኵྺVREF(ई2 × VREFLjൽਦᇀ Ք৊ႜ჋ስă཮38ዐ‫ڦ‬ൻ‫ۉۯ‬ୟኍ‫ܔ‬ᄲ൱ፌॅ฿ኈႠీ‫ڦ‬ ໯჋‫)ྷݔڦ‬ă्ย჋ስ0 V዁VREF‫ྷݔ‬Ljሶֶ‫ݴ‬႑ࡽ‫ޗڦ‬ኵ ኱ୁ᳘ࢇᆌᆩ৊ႜକᆫࣅă཮38໯๖‫ݴֶڦ‬ሏ‫ݣ‬ൻ‫ۯ‬ഗ‫ۉ‬ ྺ−VREF዁+VREF‫ރރ‬ኵ(2 × VREF)Ljᇑࠌఇ‫ۉ‬უ(VCM)࿮࠲ă ୟᆩᇀॽ‫܋ڇ‬Ă‫(੊֖ں‬ມटႠ)႑ࡽገ࣑ྺֶ‫ݴ‬႑ࡽLjժ ኴႜ‫ۉ‬ೝገ࣑Lj๑໯इ‫ݴֶڦڥ‬႑ࡽዐኵ࿋ᇀADC‫ڦ‬VREF ࠌఇ‫ۉ‬უ๟ኄଇ߲႑ࡽ‫ڦ‬ೝ਩ኵǖ ‫ۉ‬ೝă (VIN+ + VIN−)/2 ᅺُLjࠌఇ‫ۉ‬უྺኄଇୟ๼෇‫ڦ‬ዐ႐‫ۉ‬უă ኄ๑‫߳ڥ‬๼෇‫ྺྷݔڦ‬VCM ± VREF/2ăኄᅃ‫ۉ‬უՂႷሞྔև ยۨLjժ൐໲‫ྷݔڦ‬ໜጣएጚ‫ۉ‬უኵVREFܸՎࣅăVREFኵ ሺ‫้ٷ‬Ljࠌఇ‫ྷݔ‬໫ၭă֑ᆩ‫ٷݣ‬ഗൻ‫ۯ‬๼෇้Ljํाࠌ ఇ‫ྷݔ‬ᆯ‫ٷݣ‬ഗ‫ڦ‬๼‫ۉ؜‬უӦ‫ޗ‬ਦۨă Rev. C | Page 19 of 44 AD7294 2 × VREF p-p 440× GND 3.75V 220× VREF p-p 2.5V V+ 1.25V 27× VIN+ AD72941 VIN+ AD72941 V– 220× 220× 3.75V V+ REFOUT/REFIN ADC 1.25V 27× A VIN– DC INPUT VOLTAGE 2.5V VIN– REFOUT ADC 0.47μF V– 10k× 0.47μF 20k 1ADDITIONAL 05747-023 1ADDITIONAL PINS OMITTED FOR CLARITY. ཮38. ॽᅃ߲‫܋ڇ‬ມटႠ႑ࡽገ࣑ྺᅃֶ߲‫ڇݴ‬टႠ႑ࡽ‫ڦ‬ ມཚ‫ڢ‬ሏ໙‫ٷݣ‬ഗ‫ۉ‬ୟ PINS OMITTED FOR CLARITY. 05747-026 220k ཮40. ࿁ֶ‫ݴ‬ఇ๕૶থ཮ ‫ߌدୁۉ‬ഗ! AD7294༵ࠃଇ߲ມၠߛ‫ୁۉ܋‬ॠ֪‫ٷݣ‬ഗLj੗ᅜሞAVDD ዁59.4 V‫ࠌߛڦ‬ఇ‫ۉ‬უူ৛ඓ‫ۉୁݴݴֶٷݣ‬უă߳‫ٷݣ‬ഗ ࿁ֶ‫ݴ‬ఇ๕ ຺߲‫ݥ‬ጆᆩఇె๼෇ཚ‫ڢ‬੗ᅜದዃྺଇ‫ܔ‬࿁ֶ‫ݴ‬๼෇ă‫ݥ‬ ጆᆩ๼෇VIN0ࢅVIN1ࠓ‫ׯ‬ᅃ‫ܔ‬࿁ֶ‫ݴ‬๼෇LjVIN2ࢅVIN3ᄺ ੗ᅜথ๴±200 mV‫ݴֶڦ‬๼෇ăଇ߲‫ୁۉ‬ॠ֪‫ٷݣ‬ഗ਩ᆶ 12.5‫ۨࠦڦ‬ሺᅮLjժ๑ᆩ2.5 Vాևएጚ‫ۉ‬უᇸă ᅃᄣăኄዖఇ๕ူLjVIN+૶‫ڟ‬႑ࡽᇸLjፌ‫ޗٷ‬ኵྺVREF(ई ߳‫ٷݣ‬ഗ࣏ದᆶᅃ߲ఇెԲডഗLjᆩᇀࠤቱॠ֪ăពኵۨ 2 × VREFLjൽਦᇀ໯჋‫)ྷݔڦ‬LjᅜՍ૧ᆩഗॲ‫ڦ‬ኝ߲‫ۯ‬ༀ ᅭྺǖ ‫ྷݔ‬ăᅃ߲኱ୁ๼෇แेᇀVIN−ăแेᇀُ๼෇‫ۉڦ‬უྺ VIN+๼෇༵ࠃᅃ߲‫ںܔ‬฿ۙ‫ۉ‬უईᅃ߲࿁‫ۉں‬უăࢆཚ‫ڢ‬ ᆩፕVIN+ᆯADCཚ‫ݴڢ‬ದ‫ݛ‬๕ਦۨăྺሞ࿁ֶ‫ݴ‬ఇ๕ူ߾ ፕLjՂႷ჋ስֶ‫ݴ‬ఇ๕ăገ࣑໯इ‫ڦڥ‬࿁ֶ‫ݴ‬ຕ਍ᅜܾ৊ 1.2 × ஢ଉ‫ۉײ‬უ‫ྷݔ‬ ‫ُڟٳړ‬၌ኵ้Lj๼‫؜‬໮٪ሞጆᆩᆅগฉăሞႀ෇๢‫ڦړ‬ स٪ഗᅜ๑޿໮٪ൣଭኮമLjُ๼‫؜‬ԍ‫ۉߛ׼‬ೝă ዆ցஓႚ๕٪‫ئ‬ሞ঳ࡕस٪ഗዐă RSENSE AVDD TO 54.5V VPP ‫ܔ‬ᇀVIN0Lj࿁ֶ‫ݴ‬ఇ๕‫ڦ‬੦዆‫ྺײݛ‬ǖ RS(–) RS(+) AD7294 VOUT = 2(VIN+ − VIN−) − VREF_ADC R1 40k× ഄዐǖVIN+๟‫܋ڇ‬႑ࡽLjVIN−๟኱ୁ‫ۉ‬უă ILOAD R2 40k× A1 ࿁ֶ‫ݴ‬๼෇‫تࡻڦ‬ሞᇀLjఇె๼෇႑ࡽ‫ں‬ᇑADC‫ݴں‬૗Lj Q2 A2 უ‫ྷݔ‬ස཮39໯๖ă཮40၂๖࿁ֶ‫ݴ‬ఇ๕‫૶ڦ‬থ཮ă R3 100k× 2.0 AVDD = DVDD = 5V VDRIVE = 5V R4 100k× VOUT TO MUX 05747-029 Q1 ܸٗ੗ᅜ‫ڸ‬ၩ኱ୁࠌఇ‫ۉ‬უă࿁ֶ‫ݴ‬ఇ๕ူVIN−‫ۆڦ‬႙‫ۉ‬ ཮41. ߛ‫ୁۉ܋‬ॠ֪ AD7294‫ୁۉ‬ॠ֪և‫ݴ‬ዷᄲԈઔଇ߲ఇ੷ǖᅃֶ߲‫ٷݣݴ‬ഗ 1.5 AD7294‫ڦ‬๼෇‫ۉิׂ܋‬უă‫ۉ‬ፆR1ࢅR2ॽ๼෇‫ֶڟ૶܋‬ ‫ٷݣݴ‬ഗ(A1)ăA1૧ᆩৗ༹࠶Q1ࢅQ2ۙኝୁঢ়R1ࢅR2‫ڦ‬ 0.5 ‫ୁۉ‬Lj๑ഄጲว๼෇‫܋‬ฉ‫ۉڦ‬უྺଭăࠌఇ‫ݒ‬ઍॽኄၵ‫ۉ‬ ୁኮࢅԍ‫׼‬ሞሀ50 μAă‫ړ‬AD7294‫ڦ‬๼෇႑ࡽྺଭ้LjR1ࢅ 0 R2ዐ‫ୁۉڦ‬၎‫ڪ‬ă‫ݴֶ޿ړ‬႑ࡽ‫ݥ‬ଭ้Ljᅃ߲‫ۉ‬ፆዐ‫ۉڦ‬ ୁሺ‫ٷ‬Ljଷᅃ߲‫ۉ‬ፆዐ‫ୁۉڦ‬ሶ३ၭă‫ֶୁۉ‬ᇑ๼෇႑ࡽ –0.5 0 1 2 3 4 5 VREF (V) ཮39. ࿁ֶ‫ݴ‬ఇ๕ူVIN− ๼෇‫ྷݔ‬ᇑVREF ‫࠲ڦ‬ဣ 6 05747-095 VIN– (V) ࢅᅃ߲ᅏ՗‫ٷݣ‬ഗăୁঢ়ྔև‫ۉୁݴ‬ፆ‫޶ڦ‬ሜ‫ୁۉ‬ሞ 1.0 ‫ٷڦ‬ၭࢅटႠ‫ׯ‬Բ૩ă R3ࢅR4ॽୁঢ়Q1ࢅQ2‫ୁۉݴֶڦ‬ገ࣑ྺֶ‫ۉݴ‬უăA2ದ ዃྺᅏ՗‫ٷݣ‬ഗLj࣐؋ُ‫ۉ‬უժ༵ࠃ‫ྔܮ‬ሺᅮăᅺُLj‫ܔ‬ Rev. C | Page 20 of 44 AD7294 ᇀኄၵᆅগฉ‫ڦ‬±200 mV๼෇‫ۉ‬უLj੗ᅜׂิ±2.5 V‫ڦ‬๼‫؜‬ 41໯๖)փ‫ࡗגڥ‬1 kΩăଷྔLjසࡕRF1ࢅRF2ᇑR1ࢅR2‫૴ز‬ ‫ۉ‬უă (ස཮41໯๖)Ljሶኄࣷᆖၚ‫ٷݣ‬ഗ‫ڦ‬ሺᅮăRF1ᇑRF2ኮक़ AD7294ฉ‫ߌدୁۉڦ‬ഗ੗ᅜᅎ‫أ‬ԥॠ֪႑ࡽዐ‫ڦ‬ඪࢆ෻ຮ ‫ڦ‬ඪࢆ฿ದ‫ۼ‬੗ీࣷ‫ڞ‬ዂ฿ۙဃֶă ሯำࢅ฿ۙLjኄ๟ཚࡗํแ‫ܔ‬ᆩࢽཪ௽‫ڦ‬ቘհरຍܸํ၄ VPP RSENSE ‫ڦ‬ăVSENSE႑ࡽ๯ံᆯAD7294৊ႜገ࣑Lj඗ࢫ‫ٷݣ‬ഗ‫ڦ‬ఇ ె๼෇঍࣑Ljፌࢫֶ‫ۉݴ‬უምْᆯAD7294৊ႜገ࣑ă૧ᆩ RF1 ILOAD RF2 10nF ଇْገ࣑঳ࡕLj੗ᅜຕጴࣅၩ‫أ‬ඪࢆ฿ۙईሯำă‫ٷݣ‬ഗ ๼෇‫ڦ܋‬ਸ࠲๑‫ڥ‬ኄዖቘհरຍ‫ڥ‬ᅜํแăኄᅃࡗ‫࣮ݓײ‬ VPP ፌዕ঳ࡕጺࠌႴᄲ6 μsă RSx(+) CF RSx(–) AD7294 05747-098 ჋ስRSENSE AD7294ฉದࢇ‫ୁۉ‬ॠ֪‫ٷݣ‬ഗ๑ᆩ‫ۉڦ‬ፆኵᆯ‫ۉ‬უĂ‫ୁۉ‬ ࢅࠀࡼෙ‫ݛ‬௬‫ڦ‬ਏ༹ᆌᆩᄲ൱ਦۨăၭ‫ۉ‬ፆ੗ই‫ࡼࠀگ‬Lj ཮42. ‫ୁۉ‬ॠ֪୳հ(RSX੗ᅜ๟RS1ईRS2) ‫ߌۉگ‬੗‫ݞ‬ኹߌᆌׂิ‫ۉ‬უॖ‫ރ‬Ljଆࡻ‫ڦ‬ඹֶሶ੗३ၭ‫ۉ‬ ୁհ‫ۯ‬ăፌዕ჋ስ‫ۉڦ‬ፆኵ๟‫ࡼࠀگ‬ᇑଆࡻ‫ڦ‬৛‫܈‬ኄଇ߲ ‫ܔ‬ᇀగၵRFᆌᆩLjRF1ࢅRF2‫ڦ‬ፌॅኵ๟1 kΩLjܸCF1ሶ੗ᅜ ᄲ൱ችዔ‫ڦ‬঳ࡕă‫گ‬ኵ‫ۉ‬ፆ‫ࡼࠀڦ‬ড‫گ‬Lj‫ྺڍ‬କ૧ᆩADC ྺ1 μF዁10 μF‫ڦాྷݔ‬ኵăCF2๟VPP‫ۉ‬ᇸ‫ڦ‬ඁ᳘‫ۉ‬ඹLjഄ ‫ڦ‬ኝ߲๼෇‫ྷݔ‬LjᅜՍํ၄ፌߛ႑ሯԲ(SNR)ႠీLj੗ీ ኵൽਦᇀᆌᆩLj‫؛ڍ‬๔ೠࠚ้Ljॺᅱ๑ᆩ1 nF዁100 nF‫ྷݔ‬ Ⴔᄲ๑ᆩኵডߛ‫ۉڦ‬ፆă ా‫ڦ‬ኵă ‫ړ‬ॠ֪‫ୁۉ‬ᅙኪ้LjAD7294‫ߌدୁۉ‬ഗ‫ۉڦ‬უ‫(ྷݔ‬200 ਸܻ࿔๕ॠ֪‫ۉ‬ፆ૶থ! mV)‫أ‬ᅜፌ‫ٷ‬ॠ֪‫ୁۉ‬Ljᅜइ‫ࢇڥ‬๢‫ୁݴڦ‬ኵăසࡕ‫ୁݴ‬ ๑ᆩ‫گ‬ኵॠ֪‫ۉ‬ፆ֪ଉߛ‫้ୁۉ‬Lj੗ీׂࣷิसิ‫ۉ૴ز‬ ‫ۉ‬ፆ‫ٷࡗࡼࠀڦ‬Lj੗ᅜ३ၭ‫ۉୁݴ‬ፆLjُ้໯ᆩ‫ڦ‬ADC๼ ፆ࿚༶ăᆅগ‫ۉ‬ፆ੗ీ๟‫ۉۨܮ‬ፆ‫ڦ‬၎‫ړ‬ᅃև‫ݴ‬Lj‫ڞ‬ዂጺ ෇‫ྷݔ‬ডၭă๑ᆩডၭADC๼෇‫ྷݔ‬໯ׂิ‫ڦ‬ገ࣑঳ࡕ߸ ‫ۉ‬ፆྺᆅগ‫ࡧڦ܈׊‬ຕă๑ᆩਸܻ࿔๕ॠ֪૶থ੗ᅜՆ௨ ᅟ๴‫ڟ‬ሯำࢅ฿ۙဃֶᆖၚLjᅺྺ฿ۙဃֶ๟ࠦۨ‫ڦ‬Lj๼ ኄᅃ࿚༶ăኄዖ૶থ‫ݛ‬๕ॽཚࡗ‫ۉ‬ፆ‫ୁۉڦ‬ୟ০ᇑ‫ۉ‬ፆฉ ෇‫ྷݔ‬ሁၭLjሶ޿ဃֶሁ௽၂ă ‫ڦ‬უই‫ݴ‬૗ਸઠă཮43၂๖କAD7294‫ڦ‬RS(+)ᆅগᇑRS(−) RSENSEՂႷీࠕ‫׶‬๴‫ٷ‬ၭྺI2R‫ࡼࠀڦ‬ăසࡕ‫ۉ޿ࡗג‬ፆ‫ڦ‬ ᆅগኮक़‫ڦ‬ॠ֪‫ۉ‬ፆ‫ڦ‬ኟඓ૶থ‫݆ݛ‬ă SENSE RESISTOR ࠀࡼ‫ۨܮ‬ኵLjሶഄኵ੗ీࣷ೏ᅎLjईኁ‫ۉ‬ፆ๴໦ܸሰ‫ׯ‬ਸ ୟăኄ੗ీࣷ‫ڞ‬ዂAD7294ᆅগฉ‫ۉݴֶڦ‬უ‫ࡗג‬ਨ‫ܔ‬ፌ‫ٷ‬ ‫ۨܮ‬ኵăॺᅱ๑ᆩ၌ୁ‫ۉ‬ፆRF1ࢅRF2Ljྺ‫ߌدୁۉ‬ഗ༵ࠃ CURRENT FLOW FROM SUPPLY CURRENT FLOW TO LOAD ‫ྔܮ‬ԍࢺLjස཮42໯๖ăAD7294੗ᅜ‫ت‬૙ፌ‫ٷ‬30 mA‫૶ڦ‬Ⴤ ‫ୁۉ‬Ljᅺُ1 kΩ RF2੗ᅜ༵ࠃ؊‫ڦݴ‬ԍࢺă KELVIN SENSE TRACES සࡕISENSE‫ߛڦ‬ೕ‫ݴׯ‬ড‫ٷ‬Lj൩჋ስ‫ߌۉ‬ড‫ۉڦگ‬ፆă‫ۉگ‬ RSX(+) ߌূຌԋఈ‫ۉ‬ፆፌ๢ࢇُૌᆌᆩă ‫ୁۉ‬ॠ֪୳հ! RSX(–) AD7294 05747-031 ᅃၵᆌᆩዐLj੗ీႴᄲ๑ᆩྔև୳հઠই‫ٷݣگ‬ഗ‫ڦ‬๼෇ ‫(੻ټ‬९཮42)ăُ୳հഗ‫ڦ‬−3 dBֶ‫ڪ੻ټݴ‬ᇀǖ ཮43. ਸܻ࿔๕ॠ֪૶থ(RSX੗ᅜ๟RS1ईRS2) BWDM = 1/(4πRC) ఇెԲডഗ࣍ୟ ൩ጀᅪLjᆯᇀRS(+)ࢅRS(−)ᇑVPPኮक़٪ሞԝ੍ԝESDԍࢺ AD7294ాዃ2߲ยۨ‫ۅ‬ԲডഗLjᆩᇀ‫܀‬૬ఇె੦዆ă૧ᆩ ܾट࠶LjᅺُRS(+)ࢅRS(−)๼෇‫܋‬ฉ‫ڦ‬ፌ‫ۉ૴زٷ‬ፆ(ස཮ ُ‫ۉ‬ୟLjᆩࢽ੗ᅜ੺໏ඓۨ໯ॠ֪‫ۉୁݴڦ‬ፆ‫ۉ‬უ‫ڦ‬ሺ Rev. C | Page 21 of 44 AD7294 ‫ޗ‬๟‫ޏ‬ሀ‫ڪ‬ᇀᇨยኵ(VREF × 1.2)/12.5ăසࡕ๟ኄᄣLjISENSE ᇺ‫ײ‬ॠ֪ఇ๕ OVERRANGEᆅগยྺஇडߛ‫ۉ‬ೝLjᅜՍీࠕ֑ൽ๢‫ڦړ‬ BE83:5ยऺ֑ᆩ‫ݴ‬૬ৗ༹࠶3O4:15ࢅ3O4:17߾ፕăසࡕ ‫ٯ‬แLj‫ݞ‬ኹྔև‫ۉ‬ፆ๴໦ă ๑ᆩഄ໲ৗ༹࠶Ljሶኻᄲ஢ፁူଚཉॲLjBE83:5ධీ༵ ยۨ‫ۅ‬ពኵ๟AD7294‫ాڦ‬ևࠦۨኵLjߛᇀُኵ้Lj‫ୁۉ‬ॠ ࠃ‫ۨܮ‬Ⴀీă ֪‫ٷݣ‬ഗԏࢅăසࡕॽၭᇀAVDD‫ۉڦ‬უแेᇀRSENSEईVPP ૙ၙᅺጱ ᆅগLjᄺࣷ‫޿݀ة‬Բডഗă ৗ༹࠶‫ڦ‬૙ၙᅺጱnf࢚ଉܾट࠶‫ڦ‬ඤ༬Ⴀᇑ૙ၙႜྺ‫ڦ‬ೋ ࿒‫ߌد܈‬ഗ! ֶăAD7294ঢ়ࡗۙኝLjഄnfኵྺ1.008ă๑ᆩnfփ‫ڪ‬ᇀ1.008 AD7294Ԉࡤᅃ߲Ԩ‫ں‬࿒‫ߌد܈‬ഗࢅଇ߲ᇺ‫ײ‬࿒‫ߌد܈‬ഗă ‫ڦ‬ৗ༹࠶้Lj੗૧ᆩူ๕ऺ໙࿒‫ྺ܈‬T (°C)้໯ᆅ෇‫ڦ‬ဃֶǖ ΔT = (nf − 1.008) × (273.15 K + T) ኄၵ࿒‫ߌد܈‬ഗ૶Ⴤ॔੦ෙ߲࿒‫܈‬๼෇Lj௅߰5 msጲ‫ࠃ༵ۯ‬ ႎ‫܁ڦ‬ຕă ྺॽ޿൧઄భ෇੊୯ዐLjᆩࢽ੗ᅜॽΔTኵႀ෇฿ۙस٪ ೌా‫ټ‬ဤ࿒‫ߌد܈‬ഗ֪ଉဣཥ࿒‫܈‬ăܾट࠶ᇑଇ߲ᇺ‫ײ‬࿒ ഗăAD7294ࣷጲ‫ۯ‬ሞ࿒‫֪܈‬ଉ঳ࡕዐेฉई३ඁ޿ኵă ‫ߌد܈‬ഗದࢇ๑ᆩLjᅜ॔੦ഄ໲࠲॰‫ۉ‬ୟӱᇮॲ‫ڦ‬࿒‫܈‬ă एट݀พट‫ۉ‬უ ሞ8 μAĂፌߛ߾ፕ࿒‫้܈‬LjAD7294एट݀พट‫ۉ‬უᆌߛᇀ VDD 0.25 VǗሞ128 μAĂፌ‫߾گ‬ፕ࿒‫้܈‬Ljएट݀พट‫ۉ‬უᆌ‫گ‬ I-BIAS ᇀ0.95 Vă MUX LPF T1 T2 एट‫ۉ‬ፆ एट‫ۉ‬ፆᆌၭᇀ100 Ωă LIMIT REGISTERS hFEՎࣅ TEMP SENSOR D1– D2– TO ADC fC = 65kHz D2+ D1+ MUX ᆌ๑ᆩhFEՎࣅডၭ(ሀྺ50዁150)‫ڦ‬ৗ༹࠶ăhFEՎࣅডၭ ᅪ࿆ጣVBE༬Ⴀ੦዆ჹ߭ă BIAS DIODE REMOTE SENSING TRANSISTORS ‫ܔ‬ᇀRFᆌᆩLj୳հഗ๑ᆩߛQ‫ۉ‬ඹ੗ᅜԍቱ֪ଉ‫ྜڦ‬ኝ AD7294 CAP ALERT ཮44. ాևࢅᇺ‫ײ‬࿒‫ߌد܈‬ഗ AD7294ฉ ‫ ڦ‬࿒ ‫ ߌ د ܈‬ഗ ఇ ੷ ए ᇀ ෙ ‫ ୁ ۉ‬ᇱ ሶ (֖ ९ ཮ 44)Ljෙ߲‫ݴୁۉ‬՚ཚࡗᅃ߲ܾट࠶Ljሞܾ߳ट࠶ฉ֪ଉ ኟၠუইLjኄᄣ৽ీಇ‫ۉ૴زأ‬ፆ໯ᆅഐ‫ڦ‬ဃֶLjጚඓ Ⴀăኄၵ‫ۉ‬ඹLjසJohanson Technology 10 pFߛQ‫ۉ‬ඹ(֖੊ ‫پ‬ஓ500R07S100JV4T)‫ڪ‬Ljᆌ૶ሞएटᇑ݀พटኮक़Lj৑ ੗ీ੍ৎྔևഗॲă‫ڍ‬๟Lj‫ۉٷ‬ඹࣷᆖၚ࿒‫֪܈‬ଉ‫ڦ‬৛ ‫܈‬Ljॺᅱ‫ڦ‬ፌ‫ۉٷ‬ඹኵྺ100 pFă‫ܠٷ‬ຕ൧઄ူփႴᄲ‫ۉ‬ඹLj ๟‫ޏ‬჋ስ‫ۉ‬ඹൽਦᇀሯำೕ୲຤ೝă ऺ໙‫؜‬࿒‫܈‬ă AD7294 ߳๼෇ᅈْओ‫ݴ‬Lj೺क़ྺຕӥྲ௱ă޿֡ፕሞࢫ໼૶Ⴤ ݀ิLjᆩࢽ੗ᅜ‫ݣ‬႐‫ں‬ሞഄ໲ཚ‫ڢ‬ฉኴႜገ࣑ăओ‫ྜݴ‬ 2N3904 NPN D+ 10pF D– ‫้ׯ‬Lj႑ࡽ‫ߴڿد‬੦዆இडLjጲ‫ۯ‬ഔ‫ۯ‬ገ࣑ăසࡕADC ‫ت‬ᇀంସఇ๕Lj࿒‫܈‬ገ࣑ॽሞူᅃْገ࣑ྜ‫ࢫׯ‬૬नኴ 05747-099 I ཮45. ૧ᆩNPNৗ༹࠶֪ଉ࿒‫܈‬ ႜăሞጲ‫ۯ‬თ࣍ఇ๕ူLjገ࣑ॽԥ֭෇‫ړ‬മႾଚዐ‫ڦ‬๢ AD7294 ‫ ړ‬࿋ ዃ Lj ၘ ൧ ൩ ֖ ९ “स ٪ ഗ ย ዃ ”և ‫ ݴ‬ă ස ࡕ ADC੣ ှLjገ࣑ॽ૬न݀ิă D+ ෙ߲स٪ഗ٪‫߳ئ‬࿒‫܈‬ཚ‫ڢ‬ฉ‫ڦ‬ፌࢫᅃْገ࣑঳ࡕLj੗ 2N3906 PNP 10pF D– ᅜໜ้‫܁‬ൽኄၵ঳ࡕăُྔLjሞంସఇ๕ူLj੗ᅜॽ‫܁‬ ൽᅃ߲ईଇ߲ྔևཚ‫ڢ‬स٪ഗ‫֡ڦ‬ፕยྺ๼‫؜‬Ⴞଚ‫ڦ‬ᅃ և‫ݴ‬ă Rev. C | Page 22 of 44 ཮46. ૧ᆩPNPৗ༹࠶֪ଉ࿒‫܈‬ 05747-100 4×I 05747-032 16 × I AD7294  ‫ۉ૴ز‬ፆၩ‫أ‬ AD7294੗ᅜጲ‫ۯ‬ၩ‫أ‬सิ‫ۉ‬ፆĂएटࢅण‫ۉ‬ट‫ۉ‬ፆ‫ܔ‬࿒‫܈‬ R ‫܁‬ൽ‫ڦ‬ᆖၚLjܸ༵ٗࠃ߸৛ඓ‫ڦ‬঳ࡕLjܸփႴᄲᆩࢽඓۨ सิ‫ۉ‬ፆăAD7294੗ᅜց‫׋‬ፌߛ100 Ω‫ۉڦ‬ፆLjց‫ܔײࡗ׋‬ R ᆩࢽཪ௽ă TO OUTPUT AMPLIFIER R DAC֡ፕ AD7294ాዃ຺߲12࿋DACLj੗༵ࠃ12࿋‫ݴ‬Ր୲‫ڦ‬ຕጴ੦ ዆Lj֑ᆩ2.5 Vాևएጚ‫ۉ‬უăDACాࢃ๟ᅃ߲ԋఈ12࿋‫ز‬ DACLjਏᆶ5 V๼‫ࢅ܈ੵ؜‬ᅃ߲๼‫࣐؜‬؋ഗLj੗ൻ‫ߛۯ‬უ๼ ‫؜‬पă֑ᆩ2.5 Vएጚ๼෇้LjDAC๼‫ྺ܈ੵ؜‬0 V዁5 Vă DAC‫ڦ‬๼‫ྷݔ؜‬ཚࡗ฿ۙ๼෇৊ႜ੦዆Lj੗ᅜ࿋ᇀ0 V዁15 V R ‫ాྷݔ‬ă཮47ྺDAC঳ࠓ઀཮ă REFOUT/ REFIN DAC 12-BIT DAC R DAC HIGH-Z R1 100k A1 05747-028 5V R2 15V 200k ཮48. ‫ۉ‬ፆ‫ز‬঳ࠓ VDAC ๼‫ٷݣ؜‬ഗ! A2 DAC OUT V+ xx I2C DATA INPUTS R1 100k R2 200k AGND OFFSET IN x 05747-101 EXTERNAL REFERENCE CAPACITOR (POWER DOWN REGISTER = 0) ֖੊཮47LjA1‫ڦ‬ፕᆩ๟࣐؋DAC๼‫؜‬Ljഄ‫ྺྷݔ‬0 V዁VREFă ‫ٷݣ߲ܾڼ‬ഗA2‫ڦ‬ದዃྺǖ‫ܔړ‬OFFSET IN xแेᅃ߲฿ۙ ‫ۉ‬უ้Ljഄ๼‫ۉ؜‬უྺෙԠ‫ڦ‬฿ۙ‫ۉ‬უ३ඁܾԠ‫ڦ‬DAC‫ۉ‬ უǖ ཮47. DAC঳ࠓ ‫ۉ‬ፆ‫!ز‬ ‫ۉ‬ፆ‫ز‬঳ࠓස཮48໯๖Ljᆯᅃ‫ز‬2n߲‫ۉ‬ፆፇ‫ׯ‬Lj߳‫ۉ‬ፆ‫ڦ‬ ኵྺRăሜ෇DACस٪ഗ‫ڦ‬ஓਦۨ؏ൽ‫ۉ‬ፆ‫ز‬ฉనᅃ߲ব VOUT = 3VOFFSET − 2VDAC DACጴሞೌాຕጴ‫ݒ‬ገLj๑‫ڥ‬ VOUT = 3VOFFSET + 2(2VDAC − VREF) ‫ۉڦۅ‬უLjᅜઍ෇๼‫ٷݣ؜‬ഗă؏ൽ‫ۉ‬უ‫݆ݛڦ‬๟ॽ૶থ ‫ۉ‬ፆ‫ز‬ᇑ‫ٷݣ‬ഗ‫ڦ‬ਸ࠲ኮᅃԿࢇăُ঳ࠓԨวਏ‫ۙڇ‬ႠLj [ ժ൐!VDAC = VREF × ( ༵ࠃ‫ۉ‬უ๼‫؜‬Ljறِ‫گ׉ݥ‬ă໲࣏๟၍Ⴀ‫ڦ‬Ljᅺྺ໯ᆶ‫ۉ‬ ፆ‫ڦ‬ኵ၎‫ڪ‬ă D ) 2n ] ഄዐǖ VDAC๟ຕጴ‫ݒ‬ገമDAC‫ڦ‬๼‫؜‬Ǘ Dྺሜ෇DACस٪ഗ‫ܾڦ‬৊዆ஓ‫ڦ‬ๆ৊዆‫ڪ‬ၳኵǗ nྺDAC‫ڦ‬࿋‫ݴ‬Ր୲ă ՗8ߴ‫؜‬କᅃ߲฿ۙࡧຕ๖૩ă ՗8. ฿ۙ‫ۉ‬უࡧຕ๖૩ ฿ۙ‫ۉ‬უ 1.67 V 3.33 V 5.00 V VOUT (0x000) 0V 5V 10 V VOUT (0xFFF) 5 V − 1 LSB 10 V − 1 LSB 15 V − 1 LSB ᆩࢽ੗ᅜ჋ስඟ฿ۙᆅগਸୟLjُ้ሏ໙‫ٷݣ‬ഗA2‫ڦ‬ཞ၎ ๼෇‫ۉ܋‬უᆯ‫ۉ‬ፆ‫ݴ‬უഗยዃLjܸٗǖ VOUT = 2VDAC Rev. C | Page 23 of 44 AD7294 ֑ᆩ2.5 Vएጚ‫ۉ‬უ้Ljኄॽׂิ5 V๼‫܈ੵ؜‬ăփแे฿ۙ უᇸLj൩ॽ0ႀ෇࠲܏स٪ഗዐ‫ڦ‬D4ࢅD5࿋(ၘ൧൩֖९ ‫ۉ‬უ้LjDACຕጴ‫ݒ‬ገ๑‫ۉ‬ୟీࠕၟཚᆩDACᅃᄣ߾ፕă “स٪ഗยዃ”և‫)ݴ‬ă๑ᆩ220 nFඁ᳘‫ۉ‬ඹ้LjADCࢅDAC‫ڦ‬ සࡕփൻ‫ۯ‬฿ۙᆅগLjፌࡻሞ޿ᆅগᇑ‫ں‬ኮक़থᅃ߲100 nF एጚ‫ۉ‬უᇸฉ‫ۉ‬ժॺ૬዁12࿋Ⴀీ዁ณႴᄲ60 μs้क़ă ‫ۉ‬ඹLjᅜ߀฀DAC‫ॺڦ‬૬้क़ࢅሯำႠీă AD7294ᄺ੗ᅜ֑ᆩྔևएጚ‫ۉ‬უᇸ߾ፕăࢇ๢‫ڦ‬एጚ‫ۉ‬უ ൩ጀᅪLjDAC๼‫ࡼࠀڦ؜‬੗ీ၎‫ٷړ‬ăසࡕాև࿒‫ߌد܈‬ ᇸԈઔAD780ĂAD1582ĂADR431ĂREF193ࢅADR391ăُ ഗ֪ଉ‫ڟ‬ႊೌ࿒‫ٷ܈‬ᇀ150°CLjඤ࠲܏‫ۉ‬ୟ৽ࣷॽDAC๼ ྔLjਏᆶ๼‫ۙ؜‬ኝࠀీ‫ڦ‬एጚ‫ۉ‬უᇸLjසADR441‫ڪ‬Ljሎ ‫؜‬ยዃྺߛፆༀăཞ้ࣷॽ༵ႝस٪ഗCዐ‫ࡗڦ‬࿒༵ႝ࿋ Ⴙဣཥยऺටᇵॽएጚ‫ۉ‬უยዃྺՔ‫׬‬ኵᅜྔ‫ۉڦ‬უLjᅜ ዃ1Lj֖९“༵ႝࢅ၌ኵᇱ૙”և‫ݴ‬ă൩ጀᅪLj‫ړ‬࿒‫ߌد܈‬ഗ Սၯኟဣཥဃֶă ࠲܏้Ljُ༬Ⴀ্ᆩă ‫׊‬೺೏ᅎ࢚ଉएጚ‫ۉ‬უᇸໜ้क़‫ڦ‬೏ᅎଉăਏᆶ‫׊گ‬೺೏ ߛፆੇ๼෇ᆅগ! ᅎ༬Ⴀ‫ڦ‬एጚ‫ۉ‬უᇸ੗ඓԍኝ༹঴ਦ‫ݛ‬ӄዕวԍ‫׼‬࿘ۨă ‫ړ‬ᆩࢽॽߛፆੇᆅগ(DAC HIGH-Zᆅগ)ยྺߛ‫ۉ‬ೝ้(९཮ සࡕ๑ᆩྔևएጚ‫ۉ‬უᇸLj൩჋ስ࿒‫܈‬ဣຕড‫ڦگ‬एጚ‫ۉ‬ 47)Lj฿ۙᆅগฉ‫ۉڦ‬უ৽ࣷ‫؜‬၄ሞDAC๼‫ۉ؜‬უᆅগ უᇸLjᅜই‫گ‬ဣཥ๼‫ۉ؜‬უ‫ৣ࣍ܔ‬࿒‫ڦ܈‬ᅈડႠă ฉăԨዊฉLjాև‫ٷݣ‬ഗA2؊‫ړ‬ᅃ߲‫ۉ‬უ߶ໜഗă݀ิࠤ VDRIVE༬Ⴀ ቱ้Ljُ༬Ⴀ๑๼‫੺ࠕీ؜‬໏߀Վă AD7294࣏ਏᆶVDRIVE༬ႠLj੗੦዆I2Cথ੨‫߾ڦ‬ፕ‫ۉ‬უă ADCࢅDAC‫ڦ‬एጚ‫ۉ‬უᇸ VDRIVEᆅগ૶‫ڟ‬থ‫؜‬I2Cጺ၍‫ۉڦ‬ᇸăُᆅগยዃຕጴஇडᆅ AD7294ᆶଇ߲‫܀‬૬‫ڦ‬2.5 VాևߛႠీएጚ‫ۉ‬უᇸLjᅃ߲ᆩ গࢅISENSE OVERRANGEᆅগ‫ڦ‬๼෇ࢅ๼‫؜‬ពኵ‫ۉ‬ೝăVDRIVE ᇀADCLjଷᅃ߲ᆩᇀ຺߲ೌాDACăසࡕᆌᆩᄲ൱ྔևए ༬Ⴀ๑AD7294ీࠕൟ຿ᇑ3 Vࢅ5 V‫ت‬૙ഗথ੨ă૩සLjසࡕ ጚ‫ۉ‬უᇸLj੗ᅜॽഄแेᇀREFOUT/REFIN DACᆅগࢅ/ई AD7294֑ᆩ5 V VDDࠃ‫ۉ‬LjሶVDRIVEᆅগ੗ᅜ֑ᆩ3 V‫ۉ‬ᇸࠃ REFOUT/REFIN ADCᆅগăాևएጚ‫ۉ‬უᆌ‫ړ‬ঢ়ࡗ࣐؋ኮࢫLj ‫ۉ‬Lj๑‫گڥ‬უຕጴ‫ت‬૙ഗਏᆶড‫ۯڦٷ‬ༀ‫ྷݔ‬ăኄᄣLj ֍ీԥྔև‫ۉ‬ୟ๑ᆩăཚࡗ220 nF‫ۉ‬ඹ‫ܔ‬REFOUT/REFIN DAC AD7294੗ᅜ჋ስ2 × VREF‫ڦ‬๼෇‫(ྷݔ‬5 V VDD)Ljཞ้ධీᇑ ᆅগࢅREF OUT/REF IN ADCᆅগඁ᳘዁AGNDăฉ‫้ۉ‬Lj 3 Vຕጴഗॲথ੨ăཚࡗᅃ߲100 nF‫ۉ‬ඹࢅᅃ߲1 μF‫ۉ‬ඹ‫ܔ‬ AD7294ఐණ֑ᆩྔևएጚ‫ۉ‬უᇸ߾ፕăᄲ๑ీాևएጚ‫ۉ‬ ُᆅগඁ᳘዁DGNDă Rev. C | Page 24 of 44 AD7294 स٪ഗยዃ AD7294‫ాڦ‬ևस٪ഗ(֖९཮49)੗٪‫ئ‬ገ࣑঳ࡕĂገ࣑ฉ၌ ՗9. AD7294स٪ഗ‫ں‬኷ ࢅူ၌Ljᅜतᆩઠದዃࢅ੦዆ഗॲ‫ڦ‬႑တă ‫ں‬኷(16৊዆) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 40 41 COMMAND REGISTER RESULT REGISTER DAC REGISTERS TSENSE RESULT REGISTERS × 3 CHANNEL SEQUENCE REGISTER ADDRESS POINTER REGISTER DATA ALERT REGISTERS × 3 CONFIGURATION REGISTER POWER-DOWN REGISTER DATA HIGH/ DATA LOW REGISTERS × 18 HYSTERESIS REGISTER SERIAL BUS INTERFACE SDA SCL 05747-039 TSENSE OFFSET REGISTERS × 2 ཮49. AD7294स٪ഗ঳ࠓ ௅߲ຕ਍स٪ഗ‫ۼ‬ᆶᅃ߲‫ں‬኷Lj‫ړ‬ᇑኮཚ႑้Lj‫ں‬኷ኸኍ स٪ഗ৽ࣷኸၠ޿‫ں‬኷ăంସस٪ഗ๟ྸᅃ‫ڦ‬ኻႀस٪ ഗLjഄᇆस٪ഗ਩ྺ़੗‫܁‬ᆼ੗ႀ‫ڦ‬स٪ഗă ‫ں‬኷ኸኍस٪ഗ ‫ں‬኷ኸኍस٪ഗ๟ᅃ߲8࿋स٪ഗLjഄዐ6߲LSBᆩፕኸኍ ࿋Ljᆩઠ٪‫ئ‬ኸၠAD7294‫ڦ‬ᅃ߲ຕ਍स٪ഗ‫ںڦ‬኷Ljස՗ 9໯๖ă Rev. C | Page 25 of 44 स٪ഗ(Rྺ‫܁‬/Wྺႀ) ంସस٪ഗ(W) ঳ࡕस٪ഗ(R)/DACAኵ(W) TSENSE1঳ࡕ(R)/DACBኵ(W) TSENSE2঳ࡕ(R)/DACCኵ(W) TSENSEINT঳ࡕ(R)/DACDኵ(W) Ԓয়स٪ഗA (R/W) Ԓয়स٪ഗB (R/W) Ԓয়स٪ഗC (R/W) ཚ‫ڢ‬Ⴞଚस٪ഗ(R/W) ದዃस٪ഗ(R/W) ܏‫ۉ‬स٪ഗ(R/W) DATALOWस٪ഗVIN0 (R/W) DATAHIGHस٪ഗVIN0 (R/W) ‫׿‬ውस٪ഗVIN0 (R/W) DATALOWस٪ഗVIN1 (R/W) DATAHIGHस٪ഗVIN1 (R/W) ‫׿‬ውस٪ഗVIN1 (R/W) DATALOWस٪ഗVIN2 (R/W) DATAHIGHस٪ഗVIN2 (R/W) ‫׿‬ውस٪ഗVIN2 (R/W) DATALOWस٪ഗVIN3 (R/W) DATAHIGHस٪ഗVIN3 (R/W) ‫׿‬ውस٪ഗVIN3 (R/W) DATALOWस٪ഗISENSE1 (R/W) DATAHIGHस٪ഗISENSE1 (R/W) ‫׿‬ውस٪ഗISENSE1 (R/W) DATALOWस٪ഗISENSE2 (R/W) DATAHIGHस٪ഗISENSE2 (R/W) ‫׿‬ውस٪ഗISENSE2 (R/W) DATALOWस٪ഗTSENSE1 (R/W) DATAHIGHस٪ഗTSENSE1 (R/W) ‫׿‬ውस٪ഗTSENSE1 (R/W) DATALOWस٪ഗTSENSE2 (R/W) DATAHIGHस٪ഗTSENSE2 (R/W) ‫׿‬ውस٪ഗTSENSE2 (R/W) DATALOWस٪ഗTSENSEINT (R/W) DATAHIGHस٪ഗTSENSEINT (R/W) ‫׿‬ውस٪ഗTSENSEINT (R/W) TSENSE1฿ۙस٪ഗ(R/W) TSENSE2฿ۙस٪ഗ(R/W) ߾‫֪׍‬๬ఇ๕ ߾‫֪׍‬๬ఇ๕ AD7294 ంସस٪ഗ(0x00) ঳ࡕस٪ഗ(0x01) ႀ෇ంସस٪ഗॽ๑ഗॲ৊෇ంସఇ๕ăሞంସఇ๕ူLj ঳ࡕस٪ഗ๟ᅃ߲16࿋ኻ‫܁‬स٪ഗă຺߲‫ݥ‬ጆᆩADC๼෇ ഗॲӀቷLSB (D0)዁MSB (D7)‫ڦ‬ຩႾთ࣍‫܁‬ൽ჋ዐ‫ڦ‬ཚ‫ڢ‬ ࢅଇ߲ISENSEཚ‫ڦڢ‬ገ࣑঳ࡕ٪‫ئ‬ሞ঳ࡕस٪ഗዐᅜࠃ‫܁‬ (֖९՗10)ăසࡕॽ1ႀ෇ంସस٪ഗዐ‫ڦ‬గᅃ࿋Lj৽ࣷ჋ ൽă࿋D14዁࿋D12๟ཚ‫ݴڢ‬ದ࿋Ljඓۨᇑໜࢫ‫ڦ‬঳ࡕ‫ܔ‬ ስ‫ܔ‬ᆌ‫ڦ‬ཚ‫ڢ‬ኴႜገ࣑ăฉ‫้ۉ‬Ljంସस٪ഗዐ‫ڦ‬໯ᆶ࿋ ᆌ‫ڦ‬ADCཚ‫ၘ(ڢ‬൧९“ADCཚ‫ݴڢ‬ದ”և‫)ݴ‬ă࿋D11዁࿋ ਩ዃ0ăසࡕሞంସस٪ഗጴবዐ჋ዐྔևTSENSEཚ‫ڢ‬Ljሶ D0٪‫ئ‬ፌႎ‫ڦ‬ADC঳ࡕăD15๟alert_flagԍା࿋ă՗11ଚ ഗॲփࣷኈኟ൩൱৊ႜገ࣑ăፌࢫᅃْጲ‫ۯ‬ገ࣑‫ڦ‬঳ࡕॽ ‫؜‬କٗAD7294঳ࡕस٪ഗ‫܁‬ൽ‫ڼڦ‬ᅃ߲ጴব‫ాڦ‬ඹLj՗12 ፕྺႾଚ‫ڦ‬ᅃև‫ݴ‬๼‫֖(؜‬९“߾ፕఇ๕”և‫)ݴ‬ă ଚ‫؜‬କ໯‫܁‬ൽ‫߲ܾڼڦ‬ጴব‫ాڦ‬ඹă ๑ీጲ‫ۯ‬თ࣍ఇ๕้Lj੗ᅜ๑ᆩంସఇ๕(ၘ൧൩“ጲ‫ۯ‬თ ࣍ఇ๕”)ăኄዖ൧઄ူLj‫ړ‬ంସఇ๕घऄ้Ljጲ‫ۯ‬ገ࣑Ⴞ ଚሡཕǗཽ‫؜‬ంସఇ๕้(ཚࡗཕኹ࿋ई੣ှ5 msࢫ)Ljጲ‫ۯ‬ ገ࣑Ⴞଚ࣬ްኴႜă ՗10. ంସस٪ഗ1 ࿋ ཚ‫ڢ‬ 1 MSB D7 ٗTSENSE2 ‫؜܁‬ፌৎ ᅃ߲঳ࡕ D6 ٗTSENSE1 ‫؜܁‬ፌৎ ᅃ߲঳ࡕ D5 ISENSE2 D4 ISENSE1 D3 VIN3 (S.E.) ई VIN3 − VIN2 (DIFF) D2 VIN2 (S.E.) ई VIN2 − VIN3 (DIFF) D1 VIN1(S.E.) ई VIN1 − VIN0 (DIFF) LSB D0 VIN0 (S.E.) ई VIN0 − VIN1 (DIFF) S.E.՗๖‫܋ڇ‬LjDIFF՗๖ֶ‫ݴ‬ă ՗11. ঳ࡕस٪ഗ(‫ڼ‬ᅃْ‫܁‬ൽ) MSB D15 Alert_Flag D14 CHID2 D13 CHID1 D12 CHID0 D11 B11 D10 B10 D9 B9 LSB D8 B8 D5 B5 D4 B4 D3 B3 D2 B2 D1 B1 LSB D0 B0 ՗12. ঳ࡕस٪ഗ(‫܁ْܾڼ‬ൽ) MSB D7 B7 D6 B6 Rev. C | Page 26 of 44 AD7294 ADCཚ‫ݴڢ‬ದ ՗14. TSENSEस٪ഗ(‫ڼ‬ᅃْ‫܁‬ൽ) ෙ߲ཚ‫ںڢ‬኷࿋ᆩઠ՗๖঳ࡕस٪ഗዐ‫ڦ‬঳ࡕ໯‫پ‬՗‫ڦ‬ཚ MSB D15 Alert_Flag ‫ڢ‬ă՗13ၘဦଚ‫؜‬କཚ‫ڢ‬Ք๎࿋‫ڦ‬ਏ༹൧઄(S.E.՗๖‫ڇ‬ ‫܋‬LjDIFF՗๖ֶ‫)ݴ‬ă D13 CHID1 D12 CHID0 D11 B11 D10 B10 LSB D8 B8 D9 B9 ՗15. स٪ഗ(‫܁ْܾڼ‬ൽ) ՗13. ADCཚ‫ݴڢ‬ದ ࠀీ VIN0 (S.E.)ई VIN0 − VIN1 (DIFF) VIN1 (S.E.)ई VIN1 − VIN0 (DIFF) VIN2 (S.E.)ई VIN2 − VIN3 (DIFF) VIN3 (S.E.)ई VIN3 − VIN2 (DIFF) ISENSE1 ISENSE2 TSENSE1 TSENSE2 D14 CHID2 CHID2 0 ཚ‫ڢ‬ID CHID1 0 CHID0 0 MSB D7 B7 0 0 1 TSENSEINT঳ࡕस٪ഗ(0x04) 0 1 0 D6 B6 D5 B5 D4 B4 D3 B3 D2 B2 D1 B1 LSB D0 B0 TSENSEINTस٪ഗ๟ᅃ߲16࿋ኻ‫܁‬स٪ഗLjᆩઠ٪‫ాئ‬և࿒ ‫ߌد܈‬ഗ໯ׂิ‫ڦ‬ADCຕ਍ăᇑTSENSE1ࢅTSENSE2঳ࡕस٪ 0 1 1 1 1 1 1 0 0 1 1 0 1 0 1 ഗ၎ຼLjُस٪ഗॽADCׂิ‫ڦ‬࿒‫܁܈‬ຕᅜ11࿋ܾ৊዆ց ஓႚ๕٪‫ئ‬ሞD10዁D0ዐLjժॽMSBᆩፕཚᆩ༵ႝՔኾă ࿋[D14:D11]փᆩLjยዃྺ0ăገ࣑‫ٷ‬ሀ௅߰5 ms݀ิᅃْă ՗16ዐ‫ڦ‬࿒‫܈‬ຕ਍߭๕ᄺ๢ᆩᇀాև࿒‫ߌد܈‬ഗຕ਍ă ࿒‫܈‬ኵ߭๕! TSENSE1ĂTSENSE2঳ࡕस٪ഗ(0x02ࢅ0x03) ADCׂิ‫ڦ‬࿒‫܁܈‬ຕᅜ11࿋ܾ৊዆ցஓႚ๕٪‫ئ‬ሞD10዁ स٪ഗTSENSE1ࢅस٪ഗTSENSE2਩ྺ16࿋ኻ‫܁‬स٪ഗăMSB D0ዐLjኟ޶࿒‫֪܈‬ଉ঳ࡕ਩๢ᆩă࿒‫܈‬ຕ਍߭๕ස՗16໯ D15๟alert_flag࿋Lj࿋D14዁࿋D12ሶ๟ෙ߲ADCཚ‫ݴڢ‬ದ ๖ă ࿋ăD11๟ܾट࠶ਸୟՔኾԍା࿋ăADCׂิ‫ڦ‬࿒‫܁܈‬ຕ ᅜ11࿋ܾ৊዆ցஓႚ๕٪‫ئ‬ሞD10዁D0ዐ(֖९՗14ࢅ՗ 15)ăገ࣑‫ٷ‬ሀ௅߰5 ms݀ิᅃْă ՗16. TSENSEຕ਍߭๕ ๼෇ ኵ(°C) D10 (MSB) −256 D9 +128 D8 +64 D7 +32 D6 +16 Rev. C | Page 27 of 44 D5 +8 D4 +4 D3 +2 D2 +1 D1 +0.5 D0 (LSB) +0.25 AD7294 DACAĂ DACBĂ DACCĂ DACDस ٪ ഗ (0x01዁ 0x04) Ԓয়ጒༀस٪ഗA (0x05)Ăस٪ഗB (0x06)ࢅस٪ഗ C (0x07) ႀ෇ኄၵस٪ഗ‫ں‬኷੗‫ݴ‬՚ยዃDACAĂDACBĂDACCࢅ Ԓয়ጒༀस٪ഗ(AĂBࢅC)๟8࿋‫܁‬ႀस٪ഗLjᆩઠ༵ࠃ࠲ DACD๼‫ۉ؜‬უஓኵăႀ෇঳ࡕस٪ഗዐ‫ڦ‬࿋[D11:D0]๟ ᇀԒয়๚ॲ‫ڦ‬႑တăසࡕᅃْገ࣑‫ڞ‬ዂALERT/BUSYᆅগ ई঳ࡕस٪ഗ/TSENSEस٪ഗዐ‫ڦ‬alert_flag࿋घऄLjሶ੗ᅜ ໃྫDACA‫ڦ‬ຕ਍࿋ă࿋D15዁࿋D12ࢮ୼ă ‫܁‬ൽԒয়ጒༀस٪ഗᅜइ‫ܠ߸ڥ‬႑တăැᄲൣ‫أ‬ඪࢆᅃ߲ ՗17. DACस٪ഗ(‫ڼ‬ᅃْႀ෇)1 MSB D15 X 1 D14 X D13 X D12 X D11 B11 D10 B10 D9 B9 LSB D8 B8 ᅃ‫ݛ‬௬Ljᆩࢽᄺ੗ᅜႀ෇໯჋Ԓয়स٪ഗዐ‫ڦ‬၎ᆌԒয় ࿋Ljᅜൣ‫أ‬ᇑ޿࿋၎࠲‫༵ڦ‬ႝăၠದዃस٪ഗዐ‫ڦ‬࿋D1ࢅ ࿋D2ႀ෇1Lj੗ᅜൣ‫أ‬໯ᆶԒয়ጒༀस٪ഗ‫ڦ‬ඇևాඹLj X՗๖࿮࠲ ස՗24໯๖ă‫ڍ‬๟Ljُ֡ፕໜࢫࣷ๑ీALERT/BUSYᆅ ՗18. DACस٪ഗ(‫ْܾڼ‬ႀ෇) MSB D7 B7 Ԓয়स٪ഗ‫ڦ‬ඇևాඹLj൩ၠ޿स٪ഗႀ෇ஓFF(ඇ1)ăଷ D6 B6 D5 B5 D4 B4 D3 B3 D2 B2 D1 B1 গLjᅜՍीჄኴႜገ࣑ă߸‫ܠ‬႑တ൩֖९“Ԓয়ࢅ၌ኵᇱ LSB D0 B0 ૙”և‫ݴ‬ă ཚ‫ڢ‬Ⴞଚस٪ഗ(0x08) ཚ‫ڢ‬Ⴞଚस٪ഗ๟ᅃ߲8࿋‫܁‬ႀस٪ഗLjሎႹᆩࢽॽADC ገ࣑ӀຩႾಇଚLjᅜՍሞጲ‫ۯ‬თ࣍ఇ๕ူኴႜă՗22၂๖ କཚ‫ڢ‬Ⴞଚस٪ഗ‫ాڦ‬ඹă߸‫ܠ‬႑တ൩֖९“߾ፕఇ๕”և ‫ݴ‬ă ՗19. Ԓয়ጒༀस٪ഗA ༵ႝ࿋ ࠀీ D7 VIN3ߛ༵ႝ D6 VIN3‫༵گ‬ႝ D5 VIN2ߛ༵ႝ D4 VIN2‫༵گ‬ႝ D3 VIN1ߛ༵ႝ D2 VIN1‫༵گ‬ႝ D1 VIN0ߛ༵ႝ D0 VIN0‫༵گ‬ႝ ՗20. Ԓয়ጒༀस٪ഗB ༵ႝ࿋ ࠀీ D7 ԍା D6 ԍା D5 ISENSE2 ‫ג‬ଉ‫ײ‬ D4 ISENSE1 ‫ג‬ଉ‫ײ‬ D3 ISENSE2 ߛ༵ႝ D2 ISENSE2 ‫༵گ‬ႝ D1 ISENSE1 ߛ༵ႝ D0 ISENSE1 ‫༵گ‬ႝ D6 ࡗ࿒༵ႝ D5 TSENSEINT ߛ༵ႝ D4 TSENSEINT ‫༵گ‬ႝ D3 TSENSE2 ߛ༵ႝ D2 TSENSE2 ‫༵گ‬ႝ D1 TSENSE1 ߛ༵ႝ D0 TSENSE1 ‫༵گ‬ႝ D6 ԍା D5 ISENSE2 D4 ISENSE1 D3 VIN3 D2 VIN2 D1 VIN1 D0 VIN0 ՗21. Ԓয়ጒༀस٪ഗC ༵ႝ࿋ ࠀీ D7 ܾट࠶ ਸୟՔኾ ՗22. ཚ‫ڢ‬Ⴞଚस٪ഗ ཚ‫ڢ‬࿋ ࠀీ D7 ԍା Rev. C | Page 28 of 44 AD7294 ದዃस٪ഗ(0x09) ‫ڦ‬኱ୁ၍Ⴀă‫ܔ‬ᇀߛೕ๼෇႑ࡽLj੗ీႴᄲᅃ߲ᅙኪ֑ᄣ ದዃस٪ഗ๟ᅃ߲16࿋‫܁‬ႀस٪ഗLjᆩઠยዃAD7294‫߾ڦ‬ ‫ۅ‬Ljُ้੗ᅜၠದዃस٪ഗዐ‫ڦ‬D14࿋ႀ෇1Ljᅜ্ᆩሯำ ፕఇ๕ăದዃस٪ഗ‫ڦ‬࿋ࠀీස՗23ࢅ՗24໯๖ăฉ‫ۉ‬ ჽ‫֑׿‬ᄣăኄᄣ৽ీඓԍ֑ᄣ้क़၎‫ܔ‬ᇀSDA๟ࠦۨ‫ڦ‬Lj ้Ljದዃस٪ഗް࿋዁0x0000ă ܸٗ߀฀႑ሯԲ(SNR)Ⴀీăසࡕሯำჽ‫֑׿‬ᄣ้क़ჽ‫׊‬ ‫ࡗג‬1 μsLjሶ‫ړ‬മገ࣑ዕኹăසࡕSDAฉ٪ሞ‫؜ג‬I2C༬Ⴀ‫ڦ‬ ֑ᄣჽ‫ࢅ׿‬࿋ॠᄓჽ‫!׿‬ ኟሞ৊ႜገ้࣑Ljፌࡻփᄲ݀ิI2Cጺ၍ऄ‫ۯ‬Lj‫ڍ‬ሞጲ‫ۯ‬თ ࣍߾ፕఇ๕ူLj࢔వԍኤኄᅃ‫ۅ‬ăದዃस٪ഗዐ‫ڦ‬࿋D14 ࢅ࿋D13ᆩᇀሞᆶI2Cጺ၍ऄ‫้ۯ‬Ljჽ‫࠲׿‬॰֑ᄣक़߰ࢅ࿋ ՉᄂLjሶ੗ీࣷ݀ิኄዖዕኹă‫ړ‬ሯำჽ‫֑׿‬ᄣ๑ీ้Lj ฉืࢅူই้क़ՂႷ‫ࢇޙ‬I2CՔጚă‫ړ‬D13๑ీ้Ljገ้࣑ क़੗ీࣷ݀ิՎࣅă ኟ‫߾׉‬ፕ้Ljॺᅱ๑ᆩ࿋D3‫ڦ‬ఐණದዃ(๑ీ)Ljᅺྺ໲ీ ॠᄓ‫ิ݀ڦ‬ă ฉ‫้ۉ‬Lj࿋D14(ሯำჽ‫֑׿‬ᄣ)Ă࿋D13(ሯำჽ‫׿‬࿋ॠᄓ) ࢅ࿋D3(I2C୳հഗ)๑ీ(ዃ0)ăኄዖದዃ๢ࢇ‫گ‬ೕᆌᆩLj ᅺྺ‫ړ‬ᆶI2Cጺ၍ऄ‫้ۯ‬Lj࿋ॠᄓփࣷ݀ิLjܸٗඓԍଆࡻ ඓԍtOf(ፌၭኵ)ࢅtSP஢ፁI2Cᄲ൱ăI2C୳հഗࣷᅞ዆‫܌‬ᇀ 50 ns‫ڦ‬றِăසࡕ্ᆩُࠀీLjገ࣑঳ࡕॽ߸ᅟ๴‫ڟ‬I2Cጺ ၍ሯำ‫ڦ‬ᆖၚă ՗23. ದዃस٪ഗ࿋ࠀీ௮ຎǖD15዁D8 ཚ‫ڢ‬࿋ D15 ԍା ࠀీ ยዃ D14 ሯำჽ‫֑׿‬ᄣă ᆩᇀሞᆶI2C ጺ၍ऄ‫้ۯ‬Lj ჽ‫࠲׿‬॰֑ᄣ क़߰‫ิ݀ڦ‬ă D13 D12 ሯำჽ‫׿‬࿋ ጲ‫ۯ‬თ࣍ ॠᄓăᆩᇀሞᆶ ఇ๕ I2Cጺ၍ऄ‫้ۯ‬Lj ჽ‫׿‬࿋ॠᄓ ‫ิ݀ڦ‬ă D11 VIN3/VIN4‫ڦ‬ ࿁ֶ‫ݴ‬ఇ๕ D10 VIN1/VIIN2‫ڦ‬ ࿁ֶ‫ݴ‬ఇ๕ D9 VIN3/VIN4‫ڦ‬ ֶ‫ݴ‬ఇ๕ D8 VIN1/VIN2‫ڦ‬ ֶ‫ݴ‬ఇ๕ ๑ీ = 0 ্ᆩ = 1 ๑ీ = 0 ্ᆩ = 1 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ՗24. ದዃस٪ഗ࿋ࠀీ௮ຎǖD7዁D0 ཚ‫ڢ‬࿋ ࠀీ ยዃ D7 VIN4‫ڦ‬2VREF ‫ྷݔ‬ D6 VIN3‫ڦ‬2VREF ‫ྷݔ‬ D5 VIN2‫ڦ‬2VREF ‫ྷݔ‬ D4 VIN1‫ڦ‬2VREF ‫ྷݔ‬ D3 I2C୳հഗ D2 ALERTᆅগ ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 1 ্ᆩ = 0 ๑ీ = 0 ্ᆩ = 1 ๑ీǖ D2 = 1 D1 = 0 ্ᆩǖ D2 = 0 D1 D0 BUSYᆅগ(D2 = 0)Lj ჋ስALERT ൣ‫༵أ‬ႝ(D2 = 1) ᆅগटႠ (ߛ‫ۉ‬ೝᆶၳ/ ‫ۉگ‬ೝᆶၳ) ๑ీǖ ߛ‫ۉ‬ೝᆶၳ = 1 D1 = 1 + D0 = 0 ‫ۉگ‬ೝᆶၳ = 0 ্ᆩǖD1 = 0 ՗25. Ԓয়/‫ݏ‬஬ࠀీ௮ຎ D2 0 0 1 1 D1 0 1 0 1 ALERT/BUSYᆅগࠀీ ᆅগփ༵ࠃඪࢆዐ܏႑ࡽă ॽᆅগದዃྺ‫ݏ‬஬๼‫؜‬ă ॽᆅগದዃྺԒয়๼‫؜‬ă ް࿋ALERT/BUSY๼‫؜‬ᆅগĂገ࣑঳ࡕस٪ഗዐ‫ڦ‬alert_flag࿋ᅜतኝ߲Ԓয়ጒༀस٪ഗ(සᆶඪࢆ࿋ऄ‫)ۯ‬ă ॽ1Ă1ႀ෇ದዃस٪ഗዐ‫ڦ‬࿋[D2:D1]੗ް࿋ALERT/BUSYᆅগĂalert_flag࿋ࢅԒয়ጒༀस٪ഗă ႀ෇ኮࢫLjසࡕ࣮‫܁‬Ljದዃस٪ഗዐ‫ڦ‬࿋D2ࢅ࿋D1ॽ‫ݴ‬՚ྺ1Ă0ă ՗26. ADC๼෇ఇ๕๖૩ D11 0 0 0 D10 0 0 1 D9 0 0 0 D8 0 1 1 ௮ຎ ໯ᆶཚ‫ڢ‬਩ྺ‫܋ڇ‬ VIN1/VIN2ྺֶ‫ݴ‬ఇ๕ VIN1/VIN2ྺ࿁ֶ‫ݴ‬ఇ๕ Rev. C | Page 29 of 44 AD7294 ܏‫ۉ‬स٪ഗ(0x0A) ՗28. DATAHIGHࢅDATALOWस٪ഗ‫ڦ‬ఐණኵ ܏‫ۉ‬स٪ഗ๟ᅃ߲8࿋‫܁‬/ႀस٪ഗLjᆩઠॽAD7294ഗॲ‫ڦ‬ ߲߳և‫ۉ܏ݴ‬ăฉ‫้ۉ‬Lj܏‫ۉ‬स٪ഗ‫ڦ‬ఐණኵྺ0x30ă܏ ‫ۉ‬स٪ഗ‫ాڦ‬ඹස՗27໯๖ă VIN0 VIN1 VIN2 VIN3 ISENSE1 ISENSE2 TSENSE1 TSENSE2 TSENSEINT ՗27. ܏‫ۉ‬स٪ഗ௮ຎ ࿋ D7 D6 D5 D4 D3 D2 D1 D0 ADCཚ‫ڢ‬ ࠀీ ࠲܏ኝ߲ႊೌ ԍା ࠲܏ADCएጚ‫ۉ‬უᇸ࣐؋ (ሎႹ๑ᆩྔևएጚ‫ۉ‬უᇸLjฉ‫้ۉ‬ዃ1) ࠲܏DACएጚ‫ۉ‬უᇸ࣐؋ (ሎႹ๑ᆩྔևएጚ‫ۉ‬უᇸLjฉ‫้ۉ‬ዃ1) ࠲܏࿒‫ߌد܈‬ഗ ࠲܏ISENSE1 ࠲܏ISENSE2 DAC๼‫؜‬ยዃྺߛፆༀ (ႊೌ࿒‫ࡗג܈‬150°C้ጲ‫ۯ‬ยዃ) ‫܋ڇ‬ DATALOW DATAHIGH 000 FFF 000 FFF 000 FFF 000 FFF N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A ֶ‫ݴ‬ DATAHIGH 7FF 7FF 7FF 7FF 7FF 7FF 3FF 3FF 3FF DATALOW 800 800 800 800 800 800 400 400 400 ՗29. AD7294 DATAHIGH/LOWस٪ഗ(‫ڼ‬ᅃْ‫܁‬/ႀ) MSB D15 Alert_Flag ኟ‫߾׉‬ፕ้LjాևROMॽI 2Cٗऐ‫ں‬኷‫ڦ‬ଇ߲MSBยྺ 11ă඗ܸLjሞྜඇ࠲܏ఇ๕ူ(D7 = 1้)ُROM࠲ԿLjٗऐ ‫ں‬኷MSBՎྺ00ăᅺُLjྺକཽ‫ྜ؜‬ඇ࠲܏ጒༀLjႴᄲ๑ D14 0 D13 0 D12 0 D11 B11 D10 B10 D9 B9 LSB D8 B8 ՗30. AD7294 DATAHIGH/LOWस٪ഗ(‫܁ْܾڼ‬/ႀ) MSB D7 B7 D6 B6 D5 B5 D4 B4 D3 B3 D2 B2 D1 B1 LSB D0 B0 ᆩႪ߀ࢫ‫ٗڦ‬ऐ‫ں‬኷ઠ੦዆AD7294ă ॽ0ႀ෇࠲܏࿋D7ࢫLjٗऐ‫ں‬኷MSB࣬ްᇱ๔ኵ11ă DATAHIGH/DATALOWस٪ഗǖ0x0BĂ0x0C (VIN0)Ǘ 0x0EĂ0x0F (VIN1)Ǘ0x11Ă0x12 (VIN2)Ǘ0x14Ă 0x15 (VIN3) ཚ‫ڦڢ‬DATAHIGHࢅDATALOWस٪ഗ๟16࿋‫܁‬ႀस٪ഗ(९ ‫׿‬ውस٪ഗǖ0x0D (VIN0)Ă0x10 (VIN1)Ă0x13 (VIN2)Ă 0x16 (VIN3) ௅߲‫׿‬ውस٪ഗ‫ۼ‬๟16࿋‫܁‬ႀस٪ഗLj‫ڍ‬ኻ๑ᆩഄዐ‫ڦ‬12 ߲LSBLjMSB՗๖Ԓয়๚ॲăසࡕॽFFFႀ෇‫׿‬ውस٪ഗLj ‫׿‬ውस٪ഗॽ৊෇ፌၭኵ/ፌ‫ٷ‬ኵఇ๕Lj߸‫ܠ‬႑တ൩֖९ “Ԓয়ࢅ၌ኵᇱ૙”և‫ݴ‬ă ՗29ࢅ՗30)ăཚᆩԒয়Քኾ࿋๟MSB D15ăस٪ഗዐ‫ڦ‬࿋ D14዁D12փᆩLjยዃྺ0ăഄᇆ‫ڦ‬12࿋ยዃ၎࠲ཚ‫ڦڢ‬ฉ ၌ࢅူ၌ă‫܋ڇ‬ఇ๕้LjVIN0዁VIN3‫ڦ‬ఐණኵྺ000ࢅFFF (ܾ৊዆߭๕)ăֶ‫ݴ‬ఇ๕้LjV IN0዁V IN3‫ڦ‬DATA HIGHࢅ ՗31. ‫׿‬ውस٪ഗ(‫ڼ‬ᅃْ‫܁‬ൽ/ႀ෇) MSB D15 Alert_Flag D14 0 D13 0 D12 0 D11 B11 D10 B10 D9 B9 LSB D8 B8 DATALOWఐණኵ‫ݴ‬՚ྺ7FFࢅ800(ܾ৊዆ցஓ߭๕)ă൩ጀ ᅪLjසࡕഗॲದዃྺ‫܋ڇ‬ईֶ‫ݴ‬ఇ๕Lj඗ࢫ߸߀ఇ๕Ljሶ ᆩࢽՂႷཚࡗՊ‫ײ‬ዘႎยዃDATAHIGHࢅDATALOWस٪ഗ ‫ڦ‬၌ኵă ՗32. ‫׿‬ውस٪ഗ(‫܁ْܾڼ‬ൽ/ႀ෇) MSB D7 B7 ཚ‫ڢ‬7዁ཚ‫ڢ‬9(TSENSE1ĂTSENSE2ࢅTSENSEINT)‫ڦ‬DATAHIGHࢅ DATALOWఐණኵ‫ݴ‬՚ྺ3FFࢅ400Ljᅺྺኄၵ၌ኵ֑ᆩܾ৊ ዆ցஓ11࿋߭๕ă Rev. C | Page 30 of 44 D6 B6 D5 B5 D4 B4 D3 B3 D2 B2 D1 B1 LSB D0 B0 AD7294  TSENSE฿ۙस٪ഗ(0x26ࢅ0x27) TSENSE঳ࡕएᇀ2N3906ৗ༹࠶‫ڦ‬૙ၙᅺጱLj‫ܔ‬ᇀ૙ၙᅺጱ AD7294ਏᆶ࿒‫܈‬฿ۙĂ8࿋ܾ৊዆ցஓस٪ഗLjᆩᇀᇺ‫ײ‬ ᇑኮփཞ‫ڦ‬ৗ༹࠶Lj੗ᅜ๑ᆩ฿ۙस٪ഗᇎᅜց‫׋‬ă૙ၙ ཚ‫ڢ‬TSENSE1ࢅᇺ‫ײ‬ཚ‫ڢ‬TSENSE2ă૧ᆩኄၵस٪ഗLjᆩࢽ੗ ᅺጱփཞ‫ڦ‬ৗ༹࠶‫ڞ‬ዂణՔ൶ᇘా‫ڦ‬฿ۙփཞLj੗ᅜ๑ᆩ ᅜेฉई३ඁᅃۨ‫ڦ‬࿒‫܈‬฿ۙଉă ُस٪ഗᇎᅜց‫׋‬ă TSENSE1ࢅTSENSE2‫ڦ‬฿ۙस٪ഗ਩ྺ8࿋‫܁‬/ႀस٪ഗLjᆩᇀ ՗33. TSENSE฿ۙຕ਍߭๕ ᅜܾ৊዆ցஓ߭๕٪‫ئ‬ຕ਍ăTSENSE1ࢅTSENSE2࿒‫ߌد܈‬ഗ ໯֪‫ڦڥ‬࿒‫܁܈‬ຕዐࣷ३ඁ޿ຕ਍ă٪෇TSENSE঳ࡕस٪ ๼෇ ኵ(°C) ഗዐ‫ڦ‬ኵᅙኴႜ฿ۙց‫ت׋‬૙ă Rev. C | Page 31 of 44 MSB D7 −32 D6 +16 D5 +8 D4 +4 D3 +2 D2 +1 D1 +0.5 LSB D0 +0.25 AD7294 2 I Cথ੨ ཚᆩI2C้Ⴞ ኷ǗᅺُLj‫ڼ‬ᅃ߲ጴবᆩઠॺ૬‫ت‬૙೺क़ᇑ‫ڇ‬ᅃٗऐ‫ڦ‬ཚ ཮50๟๑ᆩI Cग़ඹথ੨‫ڦ‬ᅃӯ‫܁‬ႀ֡ፕ‫้ڦ‬Ⴞ཮ă ႑ă I2Cጺ၍๑ᆩਸ୑ൻ‫ۯ‬ഗǗᅺُLj‫ړ‬ுᆶഗॲൻ‫ۯ‬ጺ၍้Lj ‫ت‬૙੗ᅜ๟ॽຕ਍ႀ෇ٗऐ(ຕ਍‫ݛ‬ၠ࿋ = 0)Ljᄺ੗ᅜ๟ٗ 2 SCLࢅSDA਩ྺߛ‫ۉ‬ೝăኄ‫ྺ׬‬੣ှጒༀă‫ړ‬ጺ၍੣ှ ٗऐ‫܁‬ൽຕ਍(ຕ਍‫ݛ‬ၠ࿋ = 1)ăසࡕ๟‫܁‬ൽ‫ت‬૙Lj๯ံ‫׉‬ ้Ljዷऐཚࡗॺ૬ഐ๔ཉॲܸഔ‫ۯ‬ຕ਍‫د‬๼Ǘഐ๔ཉॲᄲ ‫׉‬Ⴔᄲႀ෇ٗऐ(ሞଷྔ‫ڦ‬ႀ෇‫ت‬૙ዐྜ‫)ׯ‬Ljߢ໕໲‫܁‬ൽ ൱‫ز‬ႜຕ਍၍(SDA)݀ิߛ‫گڟ‬ገ࣑Ljཞ้‫ز‬ႜ้ዓ၍ నᅃ߲स٪ഗă‫܁‬ൽࢅႀ෇փీࢇժሞᅃْ‫ت‬૙ዐྜ‫ׯ‬ă (SCL)ԍ‫ۉߛ׼‬ೝăኄᄣLjໜࢫ৽ࣷ݀ิຕ਍ୁăዷऐ޶ ‫ت‬૙ྜ‫้ׯ‬Ljዷऐ੗ᅜԍ‫ܔ׼‬ጺ၍‫ڦ‬੦዆Ljཚࡗׂิଷᅃ ሴׂิ้ዓă ߲ഐ๔࿋(SDAߛ‫گڟ‬ገ࣑LjܸSCLྺߛ‫ۉ‬ೝ)ܸഔ‫ۯ‬ႎ‫تڦ‬ ຕ਍ᅜ9࿋ᅃፇ‫ڦ‬ႚ๕ཚࡗ‫ز‬ႜጺ၍݀ໃǖ8࿋ຕ਍ઠጲ݀ ૙ăኄ‫ྺ׬‬ዘްഐ๔(Sr)ăईኁLjዷऐᄺ੗ᅜཚࡗံ๥‫ݣ‬ พऐLjࢫ௬߶ໜᅃ߲ઠጲথ๭ऐ‫ڦ‬ᆌ‫ٴ‬࿋(ACK)ăSDA၍ SCL၍Ljም๥‫ݣ‬SDA၍Ljܸ๥‫ݣ‬ጺ၍ăSDA݀ิ‫ߛڟگ‬ገ ฉ‫ڦ‬ຕ਍ገ࣑ՂႷ݀ิሞ้ዓ႑ࡽ‫ۉگڦ‬ೝ೺क़Ljժ൐ሞ ࣑Ljཞ้SCLྺߛ‫ۉ‬ೝLjኄ‫ྺ׬‬ཕኹ࿋(P)Ljॽ๑I2Cጺ၍৊ ߛ‫ۉ‬ೝ೺क़ԍ‫׼‬࿘ۨăথ๭ऐᆌሞᆌ‫ٴ‬࿋೺क़ॽSDA၍ઙ ෇੣ှጒༀ(ጺ၍փၩࡼ‫)ୁۉ‬ă ‫گ‬Lj՗๖ᅙኟඓথ๭ኮമ‫ڦ‬ጴবăසࡕժ‫ݥ‬සُLjሶࣷൽ ཮50ዐ‫ڦ‬૩ጱ၂๖କᅃ߲०‫ڦڇ‬ႀ෇‫ت‬૙LjഄዐAD7294ᆩ ၩ‫ت‬૙ă ፕٗऐăԨ૩ዐLjAD7294स٪ഗኸኍᅙጚԢࡻኴႜࢫჄ‫ڦ‬ ዷऐ݀ໃ‫ڼڦ‬ᅃ߲ጴবՂႷᆯ7࿋ٗऐ‫ں‬኷ࢅᅃ߲ຕ਍‫ݛ‬ ‫܁‬ൽ‫ت‬૙ă ၠ࿋ፇ‫ׯ‬ăጺ၍ฉ‫ڦ‬௅໼ยԢ‫ۼ‬ਏᆶᅃ߲ྸᅃ‫ٗڦ‬ऐ‫ں‬ SCL A6 START COND BY MASTER A5 A4 A3 A2 A1 A0 SLAVE ADDRESS BYTE R/W P7 P6 ACK. BY AD7294 USER PROGRAMMABLE 5 LSBs ཮50. ཚᆩI 2C้Ⴞ Rev. C | Page 32 of 44 P5 P4 P3 P2 REGISTER ADDRESS P1 P0 ACK. BY AD7294 STOP BY MASTER 05747-040 SDA AD7294 ‫ز‬ႜጺ၍‫ں‬኷ጴব! থ੨ၹᅱ ᆩࢽႀ෇ഗॲ‫ڼڦ‬ᅃ߲ጴব๟ٗऐ‫ں‬኷ጴবăᇑഄ໲I2Cग़ AD7294๑ᆩᅜူI2Cၹᅱă ඹഗॲᅃᄣLjAD7294ᄺਏᆶ7࿋‫ز‬ႜ‫ں‬኷ăᆩࢽ੗ཚࡗ3߲ ෙༀ๼෇ᆅগ‫ܔ‬5߲LSB৊ႜՊ‫ײ‬Ljස՗34໯๖ă ॽ‫ڇ‬ጴবຕ਍ႀ෇8࿋स٪ഗ Ԓয়स٪ഗ(0x05Ă0x06Ă0x07)Ă܏‫ۉ‬स٪ഗ(0x0A)Ăཚ‫ڢ‬ ՗34ዐLjH՗๖ᆅগ૶‫ڟ‬VDRIVELjL՗๖ᆅগ૶‫ڟ‬DGNDLj Ⴞଚस٪ഗ(0x08)Ă࿒‫܈‬฿ۙस٪ഗ(0x26Ă0x27)ࢅంସस NC՗๖ᆅগ‫ޝ‬੣ă൩ጀᅪLjፌࢫᅃዖ൧઄ዐLjᆅগฉ‫ڦ‬ ٪ഗ(0x00)਩ྺ8࿋स٪ഗLjᅺُኻీၠ௅߲स٪ഗႀ෇ᅃ ሗො‫ۉ‬ඹՂႷၭᇀ30 pFLj֍ీኟඓॠ֪‫ޝ‬੣ༀăᅺُLjPCB ߲ጴব‫ڦ‬ຕ਍ăُ֡ፕዐLjዷऐၠٗऐ݀ໃᅃ߲ጴব‫ڦ‬ຕ ጽ၍ՂႷ৑੗ీ‫܌‬ă ਍Lj֖९཮51ăॽຕ਍ႀ෇स٪ഗ้LjంସႾଚසူǖ ՗34. ๑ᆩෙༀ๼෇ᆅগ੦዆ٗऐ‫ں‬኷ AS2 L L L L L L L L L H H H H H H H H H NC NC NC NC NC NC NC NC NC AS1 L L L H H H NC NC NC L L L H H H NC NC NC L L L H H H NC NC NC AS0 L H NC L H NC L H NC L H NC L H NC L H NC L H NC L H NC L H NC ٗऐ‫ں‬኷ (A6዁A0) 0x61 0x62 0x63 0x64 0x65 0x66 0x67 0x68 0x69 0x6A 0x6B 0x6C 0x6D 0x6E 0x6F 0x70 0x71 0x72 0x73 0x74 0x75 0x76 0x77 0x78 0x79 0x7A 0x7B 1. ዷऐዃ࿋ഐ๔ཉॲă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜत՗๖ႀ֡ፕ‫ڦ‬ᅃ߲‫ݛ‬ၠ࿋0ă 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 4. ዷऐ݀ໃᅃ߲स٪ഗ‫ں‬኷ă 5. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 6. ዷऐ݀ໃᅃ߲ຕ਍ጴবă 7. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 8. ዷऐዃ࿋ཕኹཉॲᅜ঳ຐ‫ت‬૙ă Rev. C | Page 33 of 44 AD7294 1 9 1 9 SCL A6 A5 A4 A3 A2 A1 A0 P7 R/W START BY MASTER P6 P5 P4 P3 P2 P1 P0 ACK. BY AD7294 FRAME 1 SLAVE ADDRESS BYTE ACK. BY AD7294 FRAME 2 ADDRESS POINTER REGISTER BYTE 1 9 SCL (CONTINUED) SDA (CONTINUED) D7 D6 D5 D4 D3 D2 D1 D0 ACK. BY STOP BY AD7294 MASTER FRAME 3 DATA BYTE S SLAVE ADDRESS 0 A REG POINTER FROM MASTER TO SLAVE FROM SLAVE TO MASTER A DATA A S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE ཮51. ‫ڇ‬ጴবႀ෇Ⴞଚ Rev. C | Page 34 of 44 P 05747-061 SDA AD7294 ॽມጴবຕ਍ႀ෇16࿋स٪ഗ ႀ෇‫߲ܠ‬स٪ഗ ၌ኵࢅ‫׿‬ውस٪ഗ(0x0B዁0x25)Ă঳ࡕस٪ഗ(0x01዁0x04) ႀ෇‫ں߲ܠ‬኷स٪ഗ้LjంସႾଚසူǖ ᅜतದዃस٪ഗ(0x09)਩ྺ16࿋स٪ഗǗᅺُLjॽᅃ߲ኵ ႀ෇ኄၵस٪ഗ้LjႴᄲଇ߲ጴব‫ڦ‬ຕ਍ăॽມጴবຕ਍ ႀ෇ኄၵस٪ഗ้LjంସႾଚසူǖ 1. ዷऐሞSDAฉዃ࿋ഐ๔ཉॲă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜतႀ෇࿋(‫)گ‬ă 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐ(AD7294)ሞSDAฉዃ࿋ᆌ‫ٴ‬ă 4. ዷऐ݀ໃᅃ߲स٪ഗ‫ں‬኷Lj૩සԒয়ጒༀस٪ഗA‫ڦ‬ 1. ዷऐሞSDAฉዃ࿋ഐ๔ཉॲă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜतႀ෇࿋(‫)گ‬ă 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 5. ዷऐ݀ໃຕ਍ጴবă 4. ዷऐ݀ໃᅃ߲स٪ഗ‫ں‬኷ăٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 6. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 5. ዷऐ݀ໃ‫ڼ‬ᅃ߲ຕ਍ጴব(ߛጴব)ă 7. ዷऐ݀ໃ‫߲ܾڼ‬स٪ഗ‫ں‬኷Lj૩සದዃस٪ഗ‫ڦ‬स٪ 6. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 7. ዷऐ݀ໃ‫߲ܾڼ‬ຕ਍ጴব(‫گ‬ጴব)ă 8. ዷऐ݀ໃ‫ڼ‬ᅃ߲ຕ਍ጴবă 8. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 9. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 9. ዷऐሞSDAฉዃ࿋ཕኹཉॲᅜ঳ຐ‫ت‬૙ă 10. ዷऐ݀ໃ‫߲ܾڼ‬ຕ਍ጴবă स٪ഗ‫ں‬኷ăٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă ഗ‫ں‬኷ăٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 11. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 12. ዷऐሞSDAฉዃ࿋ཕኹཉॲᅜ঳ຐ‫ت‬૙ă ฉ૩ৈၘဦຫ௽କසࢆႀ෇ଇ߲स٪ഗ(Ԓয়ጒༀस٪ഗA ࢅದዃस٪ഗ)ă඗ܸLjAD7294ీࠕሞᅃ߲ႀ֡ፕዐ‫܁‬ൽ ‫߲ܠ‬स٪ഗLjස཮53໯๖ă SLAVE ADDRESS FROM MASTER TO SLAVE FROM SLAVE TO MASTER 0 A REG POINTER A DATA A S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE DATA A P 05747-059 S Figure 52. Writing Two Bytes of Data to a 16-Bit Register ... SLAVE ADDRESS DATA A FROM MASTER TO SLAVE FROM SLAVE TO MASTER 0 A DATA POINT TO PD REG (0x0A) A A DATA A POINT TO CONFIG REG (0x09) A ... P S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE 05747-054 S ཮53. ႀ෇‫߲ܠ‬स٪ഗ Rev. C | Page 35 of 44 AD7294 ٗ8࿋स٪ഗ‫܁‬ൽຕ਍ ٗ16࿋स٪ഗ‫܁‬ൽມጴবຕ਍ ٗඪᅃ8࿋स٪ഗ‫܁‬ൽాඹ‫֡ڦ‬ፕ๟‫ڇ‬ጴব‫֡܁‬ፕLjස཮ Ԩ૩ዐLjዷऐٗᅃ߲ٗऐ‫܁‬ൽෙፇມጴবຕ਍Lj‫ڍ‬൩ጀ 55໯๖ăԨၹᅱዐLj‫ت‬૙‫ڼڦ‬ᅃև‫ݴ‬ႀ෇स٪ഗኸኍăย ᅪLj੗ᅜ‫܁‬ൽ໯Ⴔඪᅪፇຕ‫ڦ‬ມጴবຕ਍ăԨၹᅱ्ย༬ ዃࡻस٪ഗ‫ں‬኷ࢫLj੗ᅜ‫޿ܔ‬༬ۨस٪ഗኴႜඪᅪْຕ‫ڦ‬ ۨस٪ഗ‫ں‬኷ᅙᆯᅃ߲‫ںܔ‬኷ኸኍस٪ഗ‫ڇڦ‬ጴবႀ֡ፕ ‫֡܁‬ፕLjܸփՂምْႀ෇‫ں‬኷ኸኍăྜ‫ׯ‬໯Ⴔْຕ‫֡܁ڦ‬ ยዃ(֖९ฉ௬‫܁ڦ‬ൽ๖૩)ă ፕࢫLjዷऐփᆌᆌ‫ٴ‬ፌࢫᅃ߲ጴবăኄ၎‫ړ‬ᇀཚኪٗऐཕ ኹ‫د‬๼LjᅜՍዷऐీࠕዃ࿋ཕኹཉॲăሞࢫჄ‫تڦ‬૙ዐ੗ ᅜምْ‫܁‬ൽ޿स٪ഗLjܸփՂዘႎႀ෇स٪ഗኸኍă සࡕႴᄲٗփཞ‫ںڦ‬኷‫܁‬ൽຕ਍LjሶՂႷॽ၎࠲स٪ഗ‫ں‬ ኷ႀ෇‫ں‬኷ኸኍस٪ഗăཞᄣLj‫޿ܔ‬स٪ഗ੗ᅜኴႜඪᅪ ْຕ‫֡܁ڦ‬ፕăሞူ௬‫ڦ‬૩ጱዐLjዷऐٗᅃ߲ٗऐথ๭ଇ ߲ጴবLjంସႾଚසူǖ 1. ዷऐሞSDAฉዃ࿋ഐ๔ཉॲă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜत‫܁‬ൽ࿋(ߛ)ă 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 4. ዷऐথ๭ᅃ߲ຕ਍ጴবă 5. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 6. ዷऐথ๭‫߲ܾڼ‬ຕ਍ጴবă 7. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 1. ዷऐሞSDAฉዃ࿋ഐ๔ཉॲă 8. ዷऐথ๭ᅃ߲ຕ਍ጴবă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜत‫܁‬ൽ࿋(ߛ)ă 9. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 10. ዷऐথ๭‫߲ܾڼ‬ຕ਍ጴবă 4. ዷऐথ๭ᅃ߲ຕ਍ጴবă 11. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 5. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 12. ዷऐথ๭ᅃ߲ຕ਍ጴবă 6. ዷऐথ๭ଷᅃ߲8࿋ຕ਍ጴবă 13. ዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă 7. ዷऐሞSDAฉዃ࿋փᆌ‫(ٴ‬NACK)Ljཚኪٗऐຕ਍‫د‬๼ 14. ዷऐথ๭‫߲ܾڼ‬ຕ਍ጴবă ᅙྜ‫ׯ‬ă 15. ዷऐሞSDAฉዃ࿋փᆌ‫ٴ‬Ljཚኪٗऐຕ਍‫د‬๼ᅙྜ‫ׯ‬ă ዷऐሞSDAฉዃ࿋ཕኹཉॲLj‫ت‬૙঳ຐă 16. ዷऐሞSDAฉዃ࿋ཕኹཉॲᅜ঳ຐ‫ت‬૙ă 1 SLAVE ADDRESS ... DATA A DATA A FROM MASTER TO SLAVE A DATA A DATA A A DATA ... A DATA P S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE FROM SLAVE TO MASTER 05747-060 S ཮54. ٗገ࣑঳ࡕस٪ഗ‫܁‬ൽෙፇມጴবຕ਍ S ... SLAVE ADDRESS DATA A FROM MASTER TO SLAVE FROM SLAVE TO MASTER 0 A REG POINTER A SR SLAVE ADDRESS 1 A DATA A ... P S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE 05747-055 8. ཮55. ٗ჋ۨस٪ഗ‫܁‬ൽଇ߲‫ڇ‬ጴবຕ਍ Rev. C | Page 36 of 44 AD7294 ߾ፕఇ๕ ഔ‫ۯ‬AD7294ኴႜገ࣑‫݆ݛڦ‬ᆶଇዖǖంସఇ๕ࢅጲ‫ۯ‬თ࣍ 3. ਏᆶ၎ᆌ‫ں‬኷‫ٗڦ‬ऐ(AD7294)ሞSDAฉዃ࿋ᆌ‫ٴ‬ă ఇ๕ă 4. ዷऐ݀ໃంସस٪ഗ‫ں‬኷0x00ăٗऐሞSDAฉዃ࿋ᆌ 5. ዷऐ݀ໃຕ਍ጴব0x13Ljᅜ჋ስVIN0ĂVIN1ࢅISENSE1ཚ ‫ٴ‬ă ంସఇ๕ ሞంସఇ๕ူLjAD7294的ADCߵ਍Ⴔᄲሞᅃ߲ཚ‫ڢ‬ईᅃ ‫ڢ‬ă ဣଚཚ‫ڢ‬ฉኴႜገ࣑ăැᄲ৊෇ُఇ๕Lj൩ॽ໯Ⴔ‫ڦ‬ཚ‫ڢ‬ ፇࢇႀ෇ంସस٪ഗ(0x00)ăُႀ֡ፕ঳ຐ้݀ิ‫ڼ‬ᅃ߲ 6. ٗऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă ገ࣑LjᅜՍူᅃ߲‫֡܁‬ፕీत้‫܁‬ൽ঳ࡕă‫܁‬ൽُ঳ࡕ‫ڦ‬ 7. ዷऐ݀ໃ঳ࡕस٪ഗ‫ں‬኷0x01ăٗऐሞSDAฉዃ࿋ᆌ ‫ٴ‬ă ཞ้݀ิ‫߲ܾڼ‬ገ࣑Ljᅈُૌླྀă ᄲཽ‫؜‬ంସఇ๕Ljዷऐփᆌᆌ‫ٴ‬ፌࢫᅃ߲ຕ਍ጴবăኄॽ ๑AD7294ཕኹ‫د‬๼LjᅜՍዷऐీࠕሞጺ၍ฉዃ࿋ཕኹཉ 8. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜत‫܁‬ൽ࿋(ߛ)ă 9. ٗऐ(AD7294)ሞSDAฉዃ࿋ᆌ‫ٴ‬ă 10. ዷऐথ๭ᅃ߲ຕ਍ጴবLj໲Ԉࡤalert_flag࿋Ăཚ‫ڢ‬ID ॲăᅺُLjႀ෇ంସस٪ഗኮࢫLjՂႷ๑ᆩዘްഐ๔(Sr) ࿋ᅜतཚ‫ڢ‬VIN0ገ࣑঳ࡕ‫຺߲ڦ‬MSBă඗ࢫLjዷऐሞ ႑ࡽLjܸփ๟ံ๑ᆩཕኹ(P)႑ࡽLj඗ࢫሞൎ࣑዁‫܁‬ൽఇ๕ SDAฉዃ࿋ᆌ‫ٴ‬ă ้๑ᆩഐ๔(S)႑ࡽă‫ޏ‬ሶLjంସఇ๕ॽሞ‫ڼ‬ᅃ߲ገ࣑ࢫཽ 11. ዷऐথ๭‫߲ܾڼ‬ຕ਍ጴবLj໲Ԉࡤཚ‫ڢ‬VIN0ገ࣑঳ࡕ ‫؜‬ă ‫ڦ‬ӗ߲LSBă඗ࢫLjዷऐሞSDAฉዃ࿋ᆌ‫ٴ‬ă ႀ෇ంସस٪ഗࢫLjस٪ഗኸኍ࣬ްᇱံ‫ڦ‬ኵăසࡕႴᄲ 12. ‫ܔ‬ཚ‫ڢ‬VIN1ࢅཚ‫ڢ‬ISENSE1ዘް‫ڼ‬10օࢅ‫ڼ‬11օă ႎ‫ڦ‬ኸኍኵ)ཚ‫׉‬๟ADC঳ࡕस٪ഗ0x01*Lj੗ᅜሞంସጴ 13. ዷऐথ๭‫ڟ‬໯ᆶ჋ۨཚ‫ڦڢ‬ገ࣑঳ࡕኮࢫLjٗऐምْ বኮࢫ૬नႀ෇ăኄᅃ‫ྔܮ‬ႀ֡ፕփࣷᆖၚገ࣑ႾଚLjᅺ ገ࣑Ljժ๼‫؜‬໯჋Ⴞଚዐ‫ڼ‬ᅃ߲ཚ‫ڦڢ‬ገ࣑঳ࡕăዘ ް‫ڼ‬10օ዁‫ڼ‬12օă ྺኻᆶ‫ڼ‬ᅃ߲‫֡܁‬ፕਸ๔֍ࣷ‫߲ܾڼ݀ة‬ገ࣑ă 14. ዷऐሞSDAฉዃ࿋փᆌ‫ٴ‬LjժሞSDAฉዃ࿋ཕኹཉ ంସఇ๕ူLj֑ᆩ400 kHz I2C้ዓ੗ํ၄‫ڦ‬ፌ‫ུཾٷ‬໏୲ྺ ॲLjᅜ঳ຐገ࣑ժཽ‫؜‬ంସఇ๕ă (400 kHz/18) = 22.2 kSPSă සࡕሞ5 ms้क़ాுᆶ݀ิ‫֡܁‬ፕLjAD7294ॽጲ‫؜ཽۯ‬ం ཮56၂๖ሞVIN0ĂVIN1ࢅISENSE1ፇ‫ڦׯ‬ཚ‫ڢ‬Ⴞଚฉኴႜገ࣑ ସఇ๕ăැᄲ߸߀ገ࣑ႾଚLj൩ምْၠంସఇ๕ႀ෇ႎ‫ڦ‬ ‫ڦ‬ంସఇ๕ă Ⴞଚă 1. ዷऐሞSDAฉዃ࿋ഐ๔ཉॲă 2. ዷऐ݀ໃ7࿋ٗऐ‫ں‬኷ᅜतႀ෇࿋)‫*گ‬ă * ... ... SLAVE ADDRESS A A POINT TO COMMAND REG (0x00) COMMAND = 0x13 A * POINT TO RESULT REG (0x01) A SR 1 SLAVE ADDRESS A ALERT? CH ID (000) * VIN0 ... * ALERT? ... 0 VIN0 A ALERT? VIN1 CH ID (001) VIN1 A A VIN0 ... * CH ID (100) A ISENSE 1 ........ A ISENSE 1 ISENSE 1 A A P ALERT? CH ID (000) FROM MASTER TO SLAVE FROM SLAVE TO MASTER * = POSITION OF A CONVERSION START ཮56.ంସఇ๕֡ፕ Rev. C | Page 37 of 44 ... A VIN0 A ... S = START CONDITION SR = REPEATED START P = STOP CONDITION A = ACKNOWLEDGE A = NOT ACKNOWLEDGE 05747-056 S AD7294 ጲ‫ۯ‬თ࣍ఇ๕! ฉ‫้ۉ‬Ljُఇ๕্ᆩăැᄲ๑ీُఇ๕Lj൩ႀ෇ದዃस٪ AD7294੗ᅜದዃ‫ׯ‬ሞ੗Պ‫ڦײ‬ཚ‫ڢ‬Ⴞଚฉ૶Ⴤኴႜገ࣑Lj ഗ(0x09)ዐ‫ڦ‬࿋D12Ljժሞཚ‫ڢ‬Ⴞଚस٪ഗ(0x08)ዐ჋ስ໯ ኄዖ߾ፕఇ๕༬՚๢ࢇဣཥ॔੦ăኄၵገ࣑ሞࢫ໼݀ิLj Ⴔ‫ڦ‬ገ࣑ཚ‫ڢ‬ă क़้߰क़ሀྺ50 μsLj‫ܔ‬ዷऐ๟ཪ௽‫ڦ‬ăཚ‫׉‬๑ᆩኄዖఇ๕ઠ ጲ‫ۯ‬თ࣍ఇ๕ऄ‫ۯ‬೺क़LjසࡕႴᄲంସఇ๕LjሶՂႷံ্ ጲ‫॔ۯ‬੦჋ۨ‫ڦ‬ཚ‫ڢ‬Ljഄዐ၌ኵस٪ഗยዃྺཚࡗԒয়ࠀ ᆩጲ‫ۯ‬თ࣍ఇ๕Lj඗ࢫ֍ీ৊෇ంସఇ๕ăኄ੗ᅜཚࡗದ ీ༵๖‫ג‬ଉ‫ײ‬൧઄Ljईኁፌၭኵ/ፌ‫ٷ‬ኵऻ୤ഗ߶ጷ༬ۨཚ ዃस٪ഗ‫ڦ‬࿋D12ൣଭLjईኁॽ0x00ႀ෇ཚ‫ڢ‬Ⴞଚस٪ഗ ‫ڢ‬ໜ้क़‫ڦ‬Վࣅă‫֡܁‬ፕࢅႀ֡ፕ੗ᅜໜ้ኴႜ)ADC঳ ઠํ၄ăంସఇ๕ገ࣑ྜ‫้ׯ‬LjᆩࢽՂႷዃ࿋ཕኹཉॲᅜ ࡕस٪ഗ0x01Ԉࡤፌႎገ࣑঳ࡕ*ă ཽ‫؜‬ంସఇ๕Lj඗ࢫ֍ీዘႎ๑ీጲ‫ۯ‬თ࣍ఇ๕ă Rev. C | Page 38 of 44 AD7294 Ԓয়ࢅ၌ኵᇱ૙ ALERT_FLAG࿋ ‫پ‬՗VREF/10.41‫ڦ‬ISENSE1 OVERRANGEࢅISENSE2 OVERRANGEă alert_flag࿋၂๖ኟሞ‫܁‬ൽ‫ڦ‬ገ࣑঳ࡕईඪࢆഄ໲ཚ‫ڢ‬঳ࡕ ฉ‫้ۉ‬Ljߵ਍‫ۉ‬ᇸথཚຩႾ‫ڦ‬փཞLj੗ీࣷ‫ࠤ݀ة‬ቱ๼ ๟‫ࡗגޏ‬ᇑኮ၎࠲‫ڦ‬၌ኵस٪ഗยዃăසࡕ݀ิԒয়൐ ‫؜‬ăॺᅱॽኄၵ࿋ൣଭፕྺฉ‫؛้ۉ‬๔ࣅ૩ႜ‫ײ‬Ⴞ‫ڦ‬ᅃև alert_flag࿋ዃ1Ljሶዷऐ੗ᅜ‫܁‬ൽԒয়ጒༀस٪ഗLjᅜइ‫ڥ‬ ‫ݴ‬Lj‫݆ݛ‬๟ॽ1ႀ෇D4ࢅD5ă ࠲ᇀԒয়݀ิ࿋ዃ‫ܠ߸ڦ‬႑တă AD7294‫ాڦ‬և‫ۉ‬ୟ੗ᅜ༵๖ྔև࿒‫ߌد܈‬ഗ‫ڦ‬D1±ईD2± Ԓয়ጒༀस٪ഗ ๼෇ᆅগ๟‫ޏ‬ਸୟăस٪ഗC)९՗21*‫ڦ‬ፌߛᆶၳ࿋༵ႝᆩ Ԓয়ጒༀस٪ഗ‫ۼ‬๟8࿋੗‫܁‬ႀस٪ഗLjᆩઠ༵ࠃ࠲ᇀԒ ࢽྔև࿒‫ߌد܈‬ഗ݀ิܾट࠶ਸୟ๚ॲăසࡕాև࿒‫د܈‬ য়๚ॲ‫ڦ‬႑တăසࡕᅃْገ࣑‫ڞ‬ዂALERT/BUSYᆅগई঳ ߌഗॠ֪‫ڟ‬AD7294ႊೌ࿒‫ࡗג܈‬150°CLjस٪ഗCዐ‫ࡗڦ‬ ࡕस٪ഗईTSENSEस٪ഗዐ‫ڦ‬alert_flag࿋घऄLjሶ੗ᅜ‫܁‬ൽ ࿒Ԓয়࿋D6৽ࣷዃ1Ljժ൐DAC๼‫؜‬ยྺߛፆༀăस٪ഗ Ԓয়ጒༀस٪ഗᅜइ‫ܠ߸ڥ‬႑တ(Ԓয়स٪ഗ঳ࠓ९཮ C‫ڦ‬ഄᇆୃ࿋٪‫ئ‬TSENSE1ĂTSENSE2ࢅTSSENSEINT‫ڦ‬Ԓয়๚ॲ 57)ă ຕ਍Lj௅ཚ‫ڢ‬ଇ߲ጒༀ࿋Ljᅃ߲‫ܔ‬ᆌDATAHIGH၌ኵLjᅃ D7 D6 D5 D4 D3 D2 D1 D0 RESERVED RESERVED ISENSE 2 OVERRANGE* ISENSE 1 OVERRANGE* ISENSE 2 HIGH ALERT ISENSE 2 LOW ALERT ISENSE 1 HIGH ALERT ISENSE 1 LOW ALERT D7 D6 D5 D4 D3 D2 D1 D0 OPEN DIODE FLAG* OVER TEMP ALERT* TSENSE INT HIGH ALERT TSENSE INT LOW ALERT TSENSE 2 HIGH ALERT TSENSE 2 LOW ALERT TSENSE 1 HIGH ALERT TSENSE 1 LOW ALERT D7 D6 D5 D4 D3 D2 D1 D0 ߲‫ܔ‬ᆌDATALOW၌ኵă ැᄲൣ‫أ‬ඪࢆᅃ߲Ԓয়स٪ഗ‫ڦ‬ඇևాඹLj൩ၠ޿स٪ഗ ႀ෇ஓFF)ඇ1*ăଷᅃ‫ݛ‬௬Ljᆩࢽᄺ੗ᅜႀ෇໯჋Ԓয়स٪ ALERT REGISTER A ഗዐ‫ڦ‬၎ᆌԒয়࿋Ljᅜൣ‫أ‬ᇑ޿࿋၎࠲‫ڦ‬Ԓয়ăၠದዃस ٪ഗዐ‫ڦ‬࿋D1ࢅ࿋D2ႀ෇1Lj੗ᅜൣ‫أ‬໯ᆶԒয়ጒༀस٪ ഗ‫ڦ‬ඇևాඹLjස՗24໯๖ă‫ڍ‬๟Ljُ֡ፕໜࢫࣷ๑ీ ALERT/BUSYᆅগLjᅜՍीჄኴႜገ࣑ă ALERT REGISTER B OR ALERT FLAG ALERT/BUSY DATAHIGHࢅDATALOW॔੦༬Ⴀ සࡕ঳ࡕ‫؜ג‬ᆩࢽยዃ‫ڦ‬ฉ၌ईူ၌LjAD7294ॽ݀‫؜‬Ԓয় CONFIGURATION REGISTER D2 = 1, D1 = 0 ) ᆘ ॲ ‫ ݛ‬๕ ๟ ཚ ࡗ ALERT/BUSYᆅ গ Lj ෉ ॲ ‫ ݛ‬๕ ๟ ཚ ࡗ alert_flag࿋Ljਏ༹‫ݛ‬๕ൽਦᇀದዃ*ă DATAHIGHस٪ഗ٪‫ئ‬ALERT/BUSY๼‫؜‬ᆅগࢅ/ईገ࣑঳ ALERT REGISTER C * THESE BITS ARE ALWAYS ACTIVE, ALL OTHER BITS CAN BE PROGRAMMED TO BE ACTIVE OR NOT AS REQUIRED. ࡕस٪ഗዐ‫ڦ‬alert_flag࿋‫ڦ‬घऄฉ၌ăසࡕገ࣑঳ࡕ‫ٷ‬ᇀ DATAHIGHस٪ഗ‫ڦ‬ኵLj৽ࣷ݀‫؜‬Ԓয়ăDATALOWस٪ഗ 05747-057 VIN3 HIGH ALERT VIN3 LOW ALERT VIN2 HIGH ALERT VIN2 LOW ALERT VIN1 HIGH ALERT VIN1 LOW ALERT VIN0 HIGH ALERT VIN0 LOW ALERT ٪ ‫ ئ‬ALERT/BUSY๼ ‫ ؜‬ᆅ গ ࢅ /ई ገ ࣑ ঳ ࡕ स ٪ ഗ ዐ ‫ڦ‬ alert_flag࿋‫ڦ‬घऄူ၌ăසࡕገ࣑঳ࡕၭᇀDATALOWस٪ ഗ‫ڦ‬ኵLj৽ࣷ݀‫؜‬Ԓয়ă ཮57. ༵ႝस٪ഗ঳ࠓ स٪ഗA)९՗19*ࡤᆶ຺߲ཚ‫ڢ‬Lj௅ཚ‫ڢ‬ଇ߲ጒༀ࿋Ljᅃ߲ ᅃ‫ڋ‬๴॔੦႑ࡽ࣮‫ڟ‬ยۨ‫ྷݔ‬ᅜాLjनገ࣑঳ࡕ࿋ᇀฉူ ‫ܔ‬ᆌDATAHIGH၌ኵLjᅃ߲‫ܔ‬ᆌDATALOW၌ኵă໲٪‫ئ‬Ք ၌ኮक़LjᇑDATAHIGHईDATALOWस٪ഗ၎࠲‫ڦ‬Ԓয়৽ࣷ ጚ‫ۉ‬უ๼෇VIN3዁VIN0‫ڦ‬Ԓয়๚ॲຕ਍ă‫܁ړ‬ൽُस٪ഗ ጲ‫ۯ‬ൣ‫أ‬ăԒয়स٪ഗ‫ాڦ‬ඹሞ௅ْገ࣑ࢫ߸ႎăጲ‫ۯ‬ఇ ‫ాڦ‬ඹ้Ljጒༀྺ1‫ڦ‬࿋՗๖‫ࡗג‬၎࠲၌ኵLjन໲ඓۨ‫ג‬ ๕ူLj௅߰50 μsኴႜᅃْገ࣑LjᅺُԒয়स٪ഗ‫ాڦ‬ඹ੗ీ ࡗோ၌‫ڦ‬ཚ‫ڢ‬ᅜत๟‫ࡗג‬ฉ၌࣏๟ူ၌ă‫܁‬ൽԒয়स٪ഗ ࣷ௅߰50 μs߀ՎᅃْăසࡕALERTᆅগ༵๖݀ิԒয়๚ॲLj ‫ాڦ‬ඹኮമLjසࡕଷᅃ߲ཚ‫ڢ‬ฉᄺ݀ิԒয়๚ॲLjሶ‫ܔ‬ᆌ ‫ڍ‬ሞူᅃْገ࣑ྜ‫ׯ‬ኮമLjுᆶ‫܁‬ൽԒয়स٪ഗ‫ాڦ‬ඹLj ‫߲ܾڼ‬Ԓয়๚ॲ‫ڦ‬࿋ᄺࣷዃ1ă ሶසࡕ๴॔੦႑ࡽ࣮‫ڟ‬ᇨۨ၌ኵኮक़Ljस٪ഗ‫ాڦ‬ඹ੗ీ स٪ഗB)९՗20*ࡤᆶෙ߲ཚ‫ڢ‬Lj௅ཚ‫ڢ‬ᄺ๟ଇ߲ጒༀ࿋Lj ᅃ ߲ ‫ ܔ‬ᆌ DATA HIGH၌ ኵ Lj ᅃ ߲ ‫ ܔ‬ᆌ DATA LOW၌ ኵ ă ࿋ ࣷ߀Վăኄዖ൧઄ူLjALERTᆅগփም༵๖݀ิԒয়๚ ॲă [D3:D0]‫ܔ‬ᆌ‫ୁۉ‬ॠ֪๼෇‫ڦ‬ฉ၌ࢅူ၌Ԓয়ă࿋D4ࢅ࿋D5 Rev. C | Page 39 of 44 AD7294 ੗ᅜ๑ᆩ‫׿‬ውस٪ഗઠ‫ݞ‬ኹALERT/BUSYᆅগ݀ิ෻ຮă 16࿋ጴ0000 0000 0000 1000ႀ෇VIN0‫׿ڦ‬ውस٪ഗ(९՗9)ă සࡕ๑ీ‫׿‬ውࠀీLjሶྺକް࿋ALERT/BUSY๼‫؜‬ᆅগࢅ ฉ‫้ۉ‬Lj‫ܔ‬ᇀ‫ݥ‬࿒‫܈‬঳ࡕस٪ഗLj‫׿‬ውस٪ഗ‫ڦ‬ኵྺ8 alert_flag࿋Ljገ࣑঳ࡕՂႷ࣮‫ڟ‬ԲDATAHIGHस٪ഗኵ዁ณ LSBǗ‫ܔ‬ᇀTSENSEस٪ഗLj‫׿‬ውस٪ഗ‫ڦ‬ኵྺ8°Cई32 LSBă ‫گ‬N LSBLjईኁԲDATALOWस٪ഗኵ዁ณߛN LSB‫ڦ‬ኵăN සࡕᄲ൱ഄ໲‫׿‬ውኵLjሶՂႷॽ޿ኵႀ෇၎࠲ཚ‫׿ڦڢ‬ው ‫ڦ‬ኵઠጲᇑ޿ཚ‫ڢ‬၎࠲‫ڦ‬12࿋‫׿‬ውस٪ഗăยዃ‫׿‬ውस٪ स٪ഗă ഗஓLj๑ኮথৎADC‫ڦ‬ፌ‫ٷ‬๼‫؜‬ஓ(न0x77D)้LjAD7294 ‫׿‬ውस٪ഗᇑ၌ኵस٪ഗದࢇ๑ᆩ‫ڦ‬ᆫ๞๟੗ᅜ‫ݞ‬ኹ߳ Սփࣷጲ‫ۯ‬ൣ‫أ‬DATAHIGHईDATALOWԒয়ă ADCཚ‫ڢ‬၎࠲‫ڦ‬Ԓয়࿋݀ิೕཌă཮58၂๖କ၌ኵၯᄓ֡ TSENSE DATAHIGHईDATALOW၌ኵस٪ഗ‫ڦ‬࿋D11๟ܾट࠶ਸ ፕă ୟՔኾăُ࿋ยྺ0้Lj՗๖Dx+ᇑDx−ᆅগኮक़ਸୟăඪ ᅃISENSE OVERRANGEᆅগ໯‫ڦ݀ة‬Ԓয়ॽᅃ኱٪ሞLj኱‫ڟ‬ ᆩࢽႀ෇Ԓয়स٪ഗᇎᅜൣ‫ྺأ‬ኹăฉ‫้ۉ‬LjDATAHIGH ๑ᆩ၌ኵस٪ഗ٪‫ئ‬ፌၭ/ፌ‫ٷ‬ገ࣑঳ࡕ ස ࡕ ॽ FFFႀ ෇ ༬ ۨ ཚ ‫ ׿ ڦ ڢ‬ው स ٪ ഗ Lj ሶ ޿ ཚ ‫ڦ ڢ‬ DATAHIGHࢅDATALOWस٪ഗॽփምᆩፕසฉ໯ຎ‫ڦ‬၌ኵ ࢅDATALOWस٪ഗް࿋዁ఐණኵ(९՗28)ă स٪ഗLjܸ๟ᆩፕፌ‫ࢅٷ‬ፌၭገ࣑঳ࡕ‫ڦ‬٪‫ئ‬स٪ഗăُ ‫׿‬ው ࠀీ๢ࢇփႴᄲԒয়႑ࡽLj‫ڍ‬ධ඗Ⴔᄲ॔੦ໜ้क़Վࣅ‫ڦ‬ සࡕ݀ิ‫ࡗג‬၌ኵ๚ॲLj‫׿‬ውኵॽਦۨALERT/BUSYᆅগ ፌၭࢅፌ‫ٷ‬ገ࣑ኵ‫ڦ‬ᆌᆩă൩ጀᅪLjฉ‫้ۉ‬Lj߳ཚ‫ڦڢ‬ ࢅ/ईalert_flag࿋‫ްڦ‬࿋‫ۅ‬ă๑ᆩ၌ኵस٪ഗ้Lj‫׿‬ውस٪ DATAHIGHस٪ഗ‫ాڦ‬ඹఐණยྺፌ‫ٷ‬ஓLjDATALOWस٪ ഗ٪‫׿ئ‬ውኵNă௅‫ܔ‬၌ኵस٪ഗ‫ۼ‬ᆶᅃ߲ጆᆩ‫׿‬ውस٪ ഗ‫ాڦ‬ඹሶఐණยྺፌၭஓă ഗă૩සLjසࡕVIN0‫ڦ‬ฉူ၌ᄲ൱8 LSB‫׿ڦ‬ውኵLjሶᆌॽ HIGH LIMIT HIGH LIMIT – HYSTERESIS INPUT SIGNAL LOW LIMIT + HYSTERESIS LOW LIMIT TIME ཮58. ၌ኵၯᄓ Rev. C | Page 40 of 44 05747-067 ALERT SIGNAL AD7294 ᆌᆩ႑တ ཮59ߴ‫؜‬କAD7294‫ۆڦ‬႙ဣཥ૶থ཮ă޿ഗॲ॔੦ࢅ੦዆ ଇ߲఍प‫ٷݣ‬ഗ‫ڦ‬ኝ༹Ⴀీăᆌᆩዐण‫ׯ‬କ‫ܔ‬ൻ‫ۯ‬ഗप‫ڦ‬ ሺᅮ੦዆ࢅ၎࿋ۙኝࠀీLjᆯAD7294‫ڦ‬ଇ߲‫ݥ‬ጆᆩ๼‫؜‬ኴ ႜăଇ߲ߛ‫ߌدୁۉ܋‬ഗ֪ଉ၎ᆌ఍प‫ٷݣ‬ഗ‫ୁۉڦ‬ăԲ ডഗ๼‫؜‬ᆅগISENSE1 OVERRANGEࢅISENSE2 OVERRANGE ๟LDMOSࠀ୲FET‫ڦ‬RF๼෇‫܋‬ਸ࠲‫ڦ‬੦዆႑ࡽăසࡕߛ‫܋‬ ‫ߌدୁۉ‬ഗ֪‫ڦڥ‬ኵᇑยۨ‫ۅ‬၎ԲLjߛᇀኸۨ‫ڦ‬၌ኵLjԲ ডഗॽൎ܏RF IN႑ࡽă ཚࡗ֪ଉ݀พࠀ୲(Tx)ࢅথ๭ࠀ୲(Rx)Lj޿ഗॲ੗ᅜ‫ۯ‬ༀ ߀Վൻ‫ۯ‬ഗࢅࠀ୲‫ٷݣ‬ഗ႑ࡽLjᅜᆫࣅႠీăُᆌᆩᄲ൱ ದࢇ‫ܔ‬ຕॠհഗ/੦዆ഗ๑ᆩLjසADIࠅິ‫ڦ‬AD8317ई AD8362‫ڪ‬ă AD7294ण‫ୁۉ‬Ă‫ۉ‬უࢅ࿒‫॔܈‬੦ࢅ੦዆໯Ⴔ‫ڦ‬ඇևཚᆩࠀ ీᇀᅃ༹Ljഄፌ‫ࠌٷ‬ఇ‫ྺྷݔ‬59.4 VLj๢ࢇᄲ൱ሞߛࠌఇ ‫ۉ‬უူኴႜ‫ୁۉ‬ॠ֪‫߾ڦ‬ᄽࢅഛ‫כ‬ᆌᆩă૩සLj޿ഗॲ‫ݥ‬ ‫׉‬๢ࢇ॔੦ࢅ੦዆‫ނ‬࿡एበዐ‫ٷݣ୲ࠀڦ‬ഗă एበࠀ୲‫ٷݣ‬ഗ‫॔ڦ‬੦ࢅ੦዆ ሞࠀ୲‫ٷݣ‬ഗ႑ࡽ૾ዐLj੗ᅜ๑ᆩAD7294ઠํ၄LDMOS ৗ༹࠶‫ڦ‬ፌॅೋዃཉॲăᆖၚೋዃཉॲ‫ڦ‬ዷᄲᅺ໎Ԉઔ࿒ ‫܈‬Ă‫ۉ‬ᇸ‫ۉ‬უĂቆट‫ۉ‬უ೏ᅎࢅᅃӯ‫ت‬૙֖ຕăࠀ୲‫ٷݣ‬ ഗದዃ‫ڦ‬ኝ༹ႠీൽਦᇀࠀၳԲĂሺᅮࢅ၍Ⴀᄲ൱‫ాڦ‬ሞ ችዔ࠲ဣăAD7294ਏᆶߛण‫܈ׯ‬Lj૧ᆩ‫ڇ‬ႊೌՍ੗‫ۯ‬ༀ੦ ዆୑ट‫ୁۉ‬Lj๑޿ኵփໜ࿒‫้ࢅ܈‬क़ܸՎࣅLjܸٗ၂ዸ߀ ฀ࠀ୲‫ٷݣ‬ഗ‫ڦ‬ኝ༹ႠీăAD7294ण‫ׯ‬କ8ዖ‫ݴ‬૬ഗॲ‫ڦ‬ ࠀీLjᇑഄ໲঴ਦ‫ݛ‬ӄ၎ԲLjবูକ‫ٷ‬ଉ‫ۉ‬ୟӱ௬ओă RSENSE VDD RSENSE ISENSE 2 OVERRANGE ISENSE 1 OVERRANGE REF Rx POWER Rx POWER MONITOR REF HIGH SIDE CURRENT SENSE RS2(–) HIGH SIDE CURRENT SENSE AD7294* 12-BIT DAC SET-POINT 240mV RF OUT VOUTA FILTER VIN1 LDMOS RF IN RF OUT VIN0 MUX 12-BIT ADC VIN2 VIN3 D1+ D2+ T1 RF IN T2 TEMP SENSOR D2– 12-BIT DAC VOUTB 12-BIT DAC VOUTC GAIN CONTROL VOUTD GAIN CONTROL 12-BIT DAC FILTER LDMOS D1– *ADDITIONAL PINS OMITTED FOR CLARITY. ཮6:/!‫ۆ‬႙IQB॔੦ࢅ੦዆ᆌᆩ Rev. C | Page 41 of 44 05747-036 Tx POWER MONITOR Tx POWER RS2(+) COMPARATORS AND REGISTERS RF CUTOFF RF CHOKE RS2(–) RS1(–) RS1(+) RF CHOKE AD7294 ࠀ୲‫ٷݣ‬ഗ‫ڦ‬ሺᅮ੦዆ AD8362‫ڦ‬VSET๼෇ă AD8362‫ڦ‬VOUTแेᇀࠀ୲‫ٷݣ‬ഗ‫ڦ‬ሺᅮ੦዆‫܋‬ăྺ๑޿ ๼‫୲ࠀ؜‬੦዆࣍ୟԍ‫׼‬࿘ۨLjՂႷॽᅃ߲‫ۉ੊֖ںܔ‬ඹ૶ ‫ڟ‬CLPFᆅগă‫࣍ړ‬ୟփೝ้࢚Ljُ‫ۉ‬ඹ‫ܔ‬໯٪ሞ‫ڦ‬ဃֶ႑ ࡽ)ํाฉ๟ᅃ߲‫*ୁۉ‬ओ‫ݴ‬ăሞᆯ੗Վሺᅮ‫ٷݣ‬ഗ(VGA) ई੗Վ‫ۉ‬უປ३ഗ(VVA)ྺࠀ୲‫ٷݣ‬ഗ༵ࠃ๼෇‫ڦ‬ဣཥ ዐLjኻႴᄲᅃ߲AD8362ăُ้Ljᅃ߲ഗॲ)VVAईPA*‫ڦ‬ ሺᅮ๟ࠦۨ‫ڦ‬LjVOUTྺଷᅃ߲ഗॲ༵ࠃ੦዆๼෇ă ሞሺᅮ੦዆ఇ๕ူLjॽᇑ໯Ⴔ๼‫ׯ୲ࠀ؜‬Բ૩(dB)‫ڦ‬ยۨ ‫ۉۅ‬უLjแेᇀAD8362‫୲ࠀڪ‬ॠհഗăࠀ୲‫ٷݣ‬ഗ(PA)‫ڦ‬ ๼‫୲ࠀ؜‬ཚࡗۨၠ᳘ࢇഗࢅປ३ഗ)ईഄ໲཰০*Ljઍ෇ AD8362‫ڦ‬๼෇‫܋‬ăVOUT૶‫ڟ‬PA‫ڦ‬ሺᅮ੦዆‫܋‬Lj֖९཮ 60ăߵ਍VOUTᇑRF๼෇႑ࡽኮक़‫ڦ‬௽ඓ࠲ဣLjAD8362ۙ বVOUTฉ‫ۉڦ‬უ)VOUT၄ሞ๟ဃֶ‫ٷݣ‬ഗ๼‫*؜‬Lj኱‫ڟ‬ RF๼෇‫ۉڦ܋‬ೝᇑ໯แे‫ڦ‬VSET၎‫ܔ‬ᆌăAD7294ࠓ‫ྜׯ‬ ኝ‫ݒڦ‬ઍ࣍ୟLjᅜ߶ጷAD8362‫ڦ‬๼‫؜‬Ljժ၎ᆌ‫ۙں‬ব ENVELOPE OF TRANSMITTED SIGNAL POWER AMPLIFIER RF IN DIRECTIONAL COUPLER ATTENUATOR C5 1nF T2 AD7294 C7 0.1nF AD8362 INHI VOUT INLO VSET VIN 1:4 CLPF ཮60.ยۨ‫ۅ‬੦዆ഗ֡ፕ Rev. C | Page 42 of 44 VOUT 05747-037 C6 0.1nF AD7294 քਆࢅದዃ ྺํ၄ፌॅႠీLjՂႷ৛႐੊୯๑ᆩAD7294‫ڦ‬PCB‫ۉڦ‬ᇸ ࢅথ‫࣮ں‬ୟքਆăࡤAD7294‫ڦ‬PCBᆌਏᆶ‫ڦ܀ڇ‬ఇెև‫ݴ‬ ࢅຕጴև‫ݴ‬Lj߳և‫ݴ‬ᆌᆶጲम‫ڦ‬ӱ௬ओăAD7294ᆌ࿋ᇀ PCB‫ڦ‬ఇెև‫ݴ‬ዐă ཚࡗ10 μFࢅ0.1 μF‫ۉ‬ඹ‫ܔ‬AD7294‫ۉڦ‬ᇸඁ᳘዁‫ں‬ăኄၵ‫ۉ‬ ඹᆌ৑੗ీ੍ৎ޿ഗॲLj0.1 μF‫ۉ‬ඹፌࡻኟ‫ܔ‬ጣ޿ഗॲă 0.1 μF‫ۉ‬ඹՂႷਏᆶ‫گ‬ᆶၳ‫ۉ૴ز‬ፆ(ESR)ࢅ‫گ‬ᆶၳ‫ۉ૴ز‬ ߌ(ESL)Lj೵ཚ༩ٍ႙‫ۉ‬ඹ๟ࢇ๢‫ڦ‬ăኍ‫ాܔ‬ևஇडਸ࠲ᆅ ഐ‫ڦ‬ຨༀ‫ୁۉ‬໯‫ڞ‬ዂ‫ߛڦ‬ೕLj޿0.1 μF‫ۉ‬ඹ੗༵ࠃ‫گ‬ፆੇ থ‫ں‬ୟ০ă10 μF‫ۉ‬ඹፌࡻྺ᮳‫ۉ‬ඹă ‫ۉ‬ᇸጽ၍ᆌ৑੗ీ੻Ljᅜ༵ࠃ‫گ‬ፆੇୟ০Ljժ३ၭ‫ۉ‬ᇸ၍ ୟฉ‫ڦ‬றِၳᆌăཚࡗຕጴ‫้ॽں‬ዓࢅഄ໲ਏᆶ੺໏ਸ࠲ ຕጴ႑ࡽ‫ڦ‬ᇮॲೡԸഐઠLj๑ኮփᆖၚ‫ۉ‬ୟӱ‫ڦ‬ഄ໲ഗ ॲă৑੗ీՆ௨ຕጴ႑ࡽᇑఇె႑ࡽ঍۠ă‫ړ‬ጽ၍ੵࡗ‫ۉ‬ ୟӱ၎‫ݒ‬ଇ้֨Ljᆌඓԍኄၵጽ၍Եُ‫ؽ‬኱Ljᅜ३ၭ‫ۉ‬ୟ ӱ‫ڦ‬ઍཚၳᆌăፌॅ‫ۉ‬ୟӱքਆरຍ๟ྲ‫ټ‬रຍLjഄዐ‫ۉ‬ ୟӱ‫ڦ‬ᇮॲ֨ጆᆩᇀথ‫֫ں‬Lj႑ࡽጽ၍ሶքยሞࡰথ֨ă ‫ڍ‬๟Ljኄዖरຍ‫ܔ‬ᇀມ֫‫ۉ‬ୟӱ࿄Ղ๔ዕ੗ႜă ྔև࿒‫ߌد܈‬ഗ‫ڦ‬քਆ੊୯ ࠀ୲‫ٷݣ‬ഗӱ੗ీ๟ߛሯำ࣍ৣLjՂႷ֑ൽ‫ٯ‬แԍࢺఇె ๼෇Lj๑ኮփ๴ሯำᆖၚLj༬՚๟‫֪ړ‬ଉᇺ‫ܾײ‬ट࠶‫ߌد‬ ഗዐ‫ڦ‬टၭ‫ۉ‬უ้ăᆌ֑ൽူଚ‫ٯݔݞ‬แǖ • ᇺ‫ײ‬ॠ֪ܾट࠶ᆌ৑੗ీ੍ৎAD7294‫ݣ‬ዃăසࡕၩ‫أ‬ କፌֶሯำᇸ‫ڦ‬ᆖၚLjሶُਐ૗੗ᅜ๟4ᆈ٫‫ڟ‬8ᆈ ٫ă • D+ࢅD-ጽ၍ᆌ৆੍ሞᅃഐೝႜքยLjথ‫ں‬ԍࢺጽ၍࿋ ᇀଇ֨ăසᆶ੗ీLjᄲሞጽ၍ူ‫ࠃ༵ݛ‬ᅃ߲‫ں‬ೝ௬ă • ๑ᆩ੻ጽ၍Ljᅜ๑‫ߌۉ‬ፌၭժই‫گ‬ሯำᆖၚăॺᅱጽ ၍੻‫ࢅ܈‬क़ਐ዁ณྺ10 milLjස཮61໯๖ă 0.25mm AGND 0.25mm D1+ 0.25mm 0.25mm D1– 0.25mm 0.25mm AGND 0.25mm 05747-049 ‫ۉ‬ᇸಖୟࢅথ‫ں‬ ཮61. ႑ࡽጽ၍Ҿಇ • ᆌ৑੗ీ३ณཟ/ࡰথথཀྵ‫ڦ‬ຕଉLjᅺྺኄၵথཀྵࣷᆅ ഐඤ‫ۉ‬౾ၳᆌă๑ᆩཟ/ࡰথথཀྵ้Ljᆌඓԍথཀྵཞ้ ٪ሞᇀDx+ࢅDx−ୟ০ዐLjժ൐࿒‫܈‬၎ཞă • ሞ‫ݴ‬૬ܾट࠶‫ڦ‬एटᇑ݀พटኮक़‫ݣ‬ዃᅃ߲10 pF‫ۉ‬ ඹLjժ๑ኮ৑੗ీ੍ৎܾट࠶ă • සࡕ‫ڟ‬ᇺ‫ߌدײ‬ഗ‫ڦ‬ਐ૗‫ࡗג‬20 cmLjॺᅱ๑ᆩມজ၍ ‫ۉ‬મă ֪ଉरຍ๑ᆩਸ࠲‫ୁۉ‬ᇸLjࡗ‫ۉڦ׊‬મࢅ/ईࡗ‫୳ڦٷ‬հ‫ۉ‬ ඹ੗ీࣷᆖၚ֪ଉă๑ᆩ‫ۉ׊‬મ้Lj੗ᅜ३ၭईփᆩ୳հ ‫ۉ‬ඹă Rev. C | Page 43 of 44 AD7294 ྔႚ؅٫ 9.20 9.00 SQ 8.80 1.20 MAX 0.75 0.60 0.45 64 49 48 1 PIN 1 0.15 0.05 0.20 0.09 7° 3.5° 0° 0.08 MAX COPLANARITY SEATING PLANE VIEW A (PINS DOWN) 33 32 16 17 VIEW A 0.40 BSC LEAD PITCH ROTATED 90° CCW 0.23 0.18 0.13 COMPLIANT TO JEDEC STANDARDS MS-026-ABD 012108-A 0° MIN 1.05 1.00 0.95 7.20 7.00 SQ 6.80 TOP VIEW ཮62. 64ᆅগTQFP‫ހ‬ጎ(SU-64-1) ؅٫‫ڇ‬࿋ǖmm ۩ࠔኸళ ႙ࡽ AD7294BSUZ 1 AD7294BSUZRL1 EVAL-AD7294EBZ1 1 ࿒‫ྷݔ܈‬ −40°C ዁ +105°C −40°C ዁ +105°C ‫ހ‬ጎ௮ຎ 64ᆅগԋ႙໒‫ݛ຺ހ‬Ռೝ‫ހ‬ጎ[TQFP] 64ᆅগԋ႙໒‫ݛ຺ހ‬Ռೝ‫ހ‬ጎ[TQFP] ೠࠚӱ Z = ‫ࢇޙ‬RoHSՔጚ‫ڦ‬ഗॲă ©2008–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05747-0-7/09(C) Rev. C | Page 44 of 44 ‫ހ‬ጎ჋ၜ SU-64-1 SU-64-1