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ADS1234

Texas Instruments
Part Number ADS1234
Manufacturer Texas Instruments
Description 24-Bit Analog-to-Digital Converter
Published Jan 2, 2020
Detailed Description www.ti.com ADS1232, ADS1234 SBAS350G – JUNE 2005 – AREDVSIS1E2D3J2A,NAUDARSY12203241 SBAS350G – JUNE 2005 – REVISED JAN...
Datasheet PDF File ADS1234 PDF File

ADS1234
ADS1234

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 1 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 • Selectable 10-SPS or 80-SPS data rates • Easy ratiometric measurements: – External voltage reference up to 5 V • Two-channel differential input with internal temperature sensor (ADS1232) • Four-channel differential input (ADS1234) • Two-wire serial interface • Supply voltage range: 2.
7 V to 5.
3 V • Temperature range: –40°C to +105°C • Packages: TSSOP-24 (ADS1232) or TSSOP-28 (ADS1234) 2 Applications • Weigh scales • PLC weight modules • Pressure sensors 3 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.
The ADS1232 also includes a temperature sensor to monitor ambient temperature.
The low-noise PGA has a selectable gain of 1, 2, 64, or 128, supporting a fullscale differential input of ±2.
5 V, ±1.
25 V, ±39 mV, or ±19.
5 mV.
The delta-sigma ADC provides a maximum of 23.
5bits effective resolution, and supports two data rates: 10 SPS (providing 50-Hz and 60-Hz rejection) and 80 SPS.
The ADS123x can be clocked externally using an oscillator or a crystal, or by the internal oscil...


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