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ADS7817

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12-Bit Differential Input Micro Power Sampling Analog-to-Digital Converter

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Data sheet

ADS7817

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 1 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.3 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 1 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.3 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • BIPOLAR INPUT RANGE
  • TRUE DIFFERENTIAL INPUT
  • 200kHz SAMPLING RATE
  • MICRO POWER: 2.3mW at 200kHz
  • POWER DOWN: 3uA Max
  • AVAILABLE IN MSOP-8 PACKAGE
  • SERIAL INTERFACE
  • AC COMMON-MODE REJECTION
  • APPLICATIONS
    • TRANSDUCER INTERFACE
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • AC MOTOR CONTROL
  • BIPOLAR INPUT RANGE
  • TRUE DIFFERENTIAL INPUT
  • 200kHz SAMPLING RATE
  • MICRO POWER: 2.3mW at 200kHz
  • POWER DOWN: 3uA Max
  • AVAILABLE IN MSOP-8 PACKAGE
  • SERIAL INTERFACE
  • AC COMMON-MODE REJECTION
  • APPLICATIONS
    • TRANSDUCER INTERFACE
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • AC MOTOR CONTROL

The ADS7817 is a 12-bit, 200kHz sampling Analog-to-Digital (A/D) converter that features a high impedance fully differential analog input. The reference voltage can be varied from 100mV to 2.5V, with a corresponding input-referred resolution between 49uV and 1.22mV.

The differential input, low power, automatic power down, and small size make the ADS7817 ideal for direct connection to transducers in battery operated systems, remote data acquisition, or multi-channel applications. The ADS7817 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.

The ADS7817 is a 12-bit, 200kHz sampling Analog-to-Digital (A/D) converter that features a high impedance fully differential analog input. The reference voltage can be varied from 100mV to 2.5V, with a corresponding input-referred resolution between 49uV and 1.22mV.

The differential input, low power, automatic power down, and small size make the ADS7817 ideal for direct connection to transducers in battery operated systems, remote data acquisition, or multi-channel applications. The ADS7817 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.
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Technical documentation

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Type Title Date
* Data sheet ADS7817: 12-Bit Differential Input Micro Power Sampling A/D Converter datasheet (Rev. A) 13 Mar 2001
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
Application note Coding Schemes Used with Data Converters (Rev. A) 15 May 2015
Application note Voltage Reference Scaling Techniques Increase Converter and Resolution Accuracy (Rev. A) 08 May 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
Application note High-Voltage Signal Conditioning for Differential ADCs 14 Jun 2004
Application note Interfacing the ADS7822 to synchronous serial port of the 80x51 Microcontroller 27 Sep 2000
Application note Remove the DC Portion of Signals with the ADS7817 27 Sep 2000

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