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ADS1232 - 24-Bit Analog-to-Digital Converter

General Description

The ADS1232 and ADS1234 (ADS123x) are precision, 24-bit, analog-to-digital converters (ADCs).

With a low-noise programmable gain amplifier (PGA), a precision delta-sigma ADC, and internal oscillator, the ADS123x provide a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and pressure sensors.

An input multiplexer (MUX) accepts either two (ADS1232) or four (ADS1234) differential inputs.

Overview

www.ti.com ADS1232, ADS1234 SBAS350G – JUNE 2005 – AREDVSIS1E2D3J2A,NAUDARSY12203241 SBAS350G – JUNE 2005 – REVISED JANUARY 2021 ADS123x 2- and 4-Channel, 24-Bit, Delta-Sigma ADCs for Bridge Sensors.

Key Features

  • Complete front-end for bridge sensors.
  • 23.5-bits effective resolution at gain = 1.
  • 19.2-bits noise-free resolution at gain = 64.
  • Low-noise PGA.
  • Selectable gains of 1, 2, 64, and 128.
  • RMS noise:.
  • 17 nV at 10 SPS at gain = 128.
  • 44 nV at 80 SPS at gain = 128.
  • 100-dB simultaneous 50-Hz and 60-Hz rejection.
  • Flexible clocking:.
  • Low-drift internal oscillator.
  • Optional external crystal.