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DATA SHEET
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)
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