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Details for Texas Instruments


18-Bit, 1-MSPS, 1-Ch SAR ADC with programmable (±12/±10/±6/±5/±2.5V) input ranges on +5V supply
Buy Directly from Texas Instruments (3801 in Stock)
$5.3000 per unit
Series Information for ADS8691IPWR - Texas Instruments


  • feature
    18-Bit ADC with Integrated Analog Front-End
  • feature
    5-V Analog Supply: 1.65-V to 5-V I/O Supply
  • feature
    ALARM u2192 High, Low Thresholds per Channel
  • feature
    Constant Resistive Input Impedance u2265 1 Mu03a9
  • feature
    Excellent Performance: u2013 DNL: u00b10.6 LSB; INL: u00b11.75 LSB u2013 SNR: 92.5 dB; THD: u2013110 dB
  • feature
    Extended Industrial Temperature Range:
  • feature
    High Speed: u2013 ADS8691: 1 MSPS u2013 ADS8695: 500 kSPS u2013 ADS8699: 100 kSPS
  • feature
    Input Overvoltage Protection: Up to u00b120 V
  • feature
    On-Chip, 4.096-V Reference with Low Drift
  • feature
    Software Programmable Input Ranges: u2013 Bipolar Ranges: u00b112.288 V, u00b110.24 V, u00b16.144 V, u00b15.12 V, and u00b12.56 V u2013 Unipolar Ranges: 0 Vu201312.288 V, 0 Vu201310.24 V, 0 Vu20136.144 V, and 0 Vu20135.12 V
  • feature
    multiSPIu2122 Interface with Daisy-Chain


The ADS8691, ADS8695, and ADS8699 devices belong to a family of integrated data acquisition system based on a successive approximation (SAR) analog-to-digital converter (ADC). The devices feature a high-speed, high-precision SAR ADC, integrated analog front-end (AFE) input driver circuit, overvoltage protection circuit up to ±20 V, and an onchip 4.096-V reference with extremely low temperature drift. The devices operate on a single 5-V analog supply, but support true bipolar input ranges of ±12.288 V, ±6.144 V, ±10.24 V, ±5.12 V, and ±2.56 V, as well as unipolar input ranges of 0 V to 12.288 V, 0 V to 10.24 V, 0 V to 6.144 V, and 0 V to 5.12 V. The gain and offset errors are accurately trimmed within the specified values for each input range to ensure high dc precision. The input range selection is done by software programming of the device internal registers. The devices offer a high resistive input impedance (≥ 1 MΩ) irrespective of the selected input range. The multiSPI digital interface is backward-compatible to the traditional SPI protocol. Additionally, configurable features simplify interface to a wide range of host controllers.


Resolution (Bits):
Sampling Rate:
Input Channel Type:
Single Ended
Data Interface:
Supply Voltage Type:
Supply Voltage Min:
Supply Voltage Max:
ADC / DAC Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
Single 18-Bit SAR ADCs
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 3 - 168 hours
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

18-Bit High-Speed Single-Supply SAR ADC Data Acquisition System with Programmable Bipolar Input Ranges 1Msps SPI Interface 16-Pin TSSOP T/R

Texas Instruments

18-Bit, 1-MSPS, 1-Ch SAR ADC with programmable (±12/±10/±6/±5/±2.5V) input ranges on +5V supply

Texas Instruments product