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ADS8885 - SAR Analog-to-Digital Converter

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General Description

The ADS8885 is an 18-bit, 400-kSPS, true-differential input, analog-to-digital converter (ADC).

The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling.

The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD).

Overview

ADS8885 www.ti.com SBAS568A – MAY 2013 – REVISED DECEMBER 2013 18-Bit, 400-kSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter Check for Samples:.

Key Features

  • 1.
  • 234 Sample Rate: 400 kHz.
  • No Latency Output.
  • Unipolar, True-Differential Input Range:.
  • VREF to +VREF.
  • Wide Common-Mode Voltage Range: 0 V to VREF with 90-dB CMRR (min).
  • SPI™-Compatible Serial Interface with Daisy-Chain Option.
  • Excellent AC and DC Performance:.
  • SNR: 100 dB, THD:.
  • 115 dB.
  • INL: ±1.5 LSB (typ), ±3.0 LSB (max).
  • DNL: +1.5 and.
  • 1 LSB (max), 18-Bit NMC.
  • Wide Operating Rang.

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