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AD7713 Datasheet(PDF) 26 Page - Analog Devices |
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AD7713 Datasheet(HTML) 26 Page - Analog Devices |
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26 / 28 page  REV. C –26– AD7713 OTHER 24-BIT SIGNAL CONDITIONING ADCS AVAILABLE FROM ANALOG DEVICES FUNCTIONAL BLOCK DIAGRAM CLOCK GENERATION SERIAL INTERFACE CONTROL REGISTER OUTPUT REGISTER CHARGING BALANCING A/D CONVERTER AUTO-ZEROED ∑ − ∆ MODULATOR DIGITAL FILTER AD7710 M U X AGND DGND MODE SDATA SCLK A0 MCLK OUT MCLK IN AIN1(+) AIN1(–) AIN2(+) AIN2(–) REF IN(–) REF IN(+) AVDD DVDD AVDD 4.5µA A = 1 – 128 VSS AVDD 20µA VBIAS REF OUT SYNC DRDY TFS RFS RTD CURRENT 2.5V REFERENCE PGA FUNCTIONAL BLOCK DIAGRAM CLOCK GENERATION SERIAL INTERFACE CONTROL REGISTER OUTPUT REGISTER CHARGING BALANCING A/D CONVERTER AUTO-ZEROED ∑ − ∆ MODULATOR DIGITAL FILTER AD7711 M U X AGND DGND MODE SDATA SCLK A0 MCLK OUT MCLK IN AIN1(+) AIN1(–) AIN2 REF IN(–) REF IN(+) AVDD DVDD AVDD 4.5µA A = 1 – 128 VSS AVDD 200µA VBIAS REF OUT SYNC DRDY TFS RFS RTD2 2.5V REFERENCE PGA 200µA RTD1 AD7710 FEATURES Charge Balancing ADC 24 Bits No Missing Codes 0.0015% Nonlinearity Two-Channel Programmable Gain Front End Gains from 1 to 128 Differential Inputs Low-Pass Filter with Programmable Filter Cutoffs Ability to Read/Write Calibration Coefficients Bidirectional Microcontroller Serial Interface Internal/External Reference Option Single or Dual Supply Operation Low Power (25 mW typ) with Power-Down Mode (7 mW typ} APPLICATIONS Weigh Scales Thermocouples Process Control Smart Transmitters Chromatography AD7711 FEATURES Charge Balancing ADC 24 Bits No Missing Codes 0.0015% Nonlinearity Two-Channel Programmable Gain Front End Gains from 1 to 128 One Differential Input One Single-Ended Input Low-Pass Filter with Programmable Filter Cutoffs Ability to Read/Write Calibration Coefficients RTD Excitation Current Sources Bidirectional Microcontroller Serial Interface Internal/External Reference Option Single or Dual Supply Operation Low Power (25 mW typ) with Power-Down Mode (7 mW typ) APPLICATIONS RTD Transducers Process Control Smart Transmitters Portable Industrial Instruments |
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