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ADS8685 - SAR ADC Data Acquisition

This page provides the datasheet information for the ADS8685, a member of the ADS8681 SAR ADC Data Acquisition family.

Description

The ADS8681, ADS8685, and ADS8689 belong to a family of integrated data acquisition system based on a successive approximation (SAR) analog-to-digital converter (ADC).

Features

  • 16-bit ADC with integrated analog front-end.
  • High speed:.
  • ADS8681: 1 MSPS.
  • ADS8685: 500 kSPS.
  • ADS8689: 100 kSPS.
  • Software programmable input ranges:.
  • Bipolar ranges: ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, and ±2.56 V.
  • Unipolar ranges: 0 V.
  • 12.288 V, 0 V.
  • 10.24 V, 0 V.
  • 6.144 V, and 0 V.
  • 5.12 V.
  • 5-V analog supply: 1.65-V to 5-V I/O supply.
  • Constant resistive input impedance ≥ 1 M.

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Datasheet preview – ADS8685

Datasheet Details

Part number ADS8685
Manufacturer Texas Instruments
File Size 2.30 MB
Description SAR ADC Data Acquisition
Datasheet download datasheet ADS8685 Datasheet
Additional preview pages of the ADS8685 datasheet.

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Full PDF Text Transcription

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ADS8681, ADS8685, ADS8689 SBAS633E – FEBRUARY 2016 – REVISED AUGUST 2022 ADS868x 16-Bit, High-Speed, Single-Supply, SAR ADC Data Acquisition System With Programmable, Bipolar Input Ranges 1 Features • 16-bit ADC with integrated analog front-end • High speed: – ADS8681: 1 MSPS – ADS8685: 500 kSPS – ADS8689: 100 kSPS • Software programmable input ranges: – Bipolar ranges: ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, and ±2.56 V – Unipolar ranges: 0 V–12.288 V, 0 V–10.24 V, 0 V–6.144 V, and 0 V–5.12 V • 5-V analog supply: 1.65-V to 5-V I/O supply • Constant resistive input impedance ≥ 1 MΩ • Input overvoltage protection: Up to ±20 V • On-chip, 4.096-V reference with low drift • Excellent performance: – DNL: ±0.4 LSB; INL: ±0.
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