ADS1232

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) ...