Texas Instruments ADS1234
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. The ADS1232 also includes a temperature sensor to monitor ambient temperature.| Part No. | ADS1234 |
|---|---|
| Datasheet | ADS1234 Download |
| Manufacturer |  Texas Instruments |
| Description | 24-Bit Analog-to-Digital Converter |
| Buy | Stock & Price |
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
An input multiplexer (MUX) accepts either two (ADS1232) or four (ADS1234) differential inputs. 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.
