ADS1232 24-Bit ADC Analog Digital Converter Module

Description
The ADS1232 and ADS1234 are accurate 24-bit analog-to-digital converters (ADCs). With a built-in low-noise programmable gain amplifier (PGA), precision ADC and internal oscillator, the ADS1232 / 4 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors.
The input multiplexer accepts two (ADS1232) or four (ADS1234) differential inputs. The ADS1232 also includes a built-in temperature sensor to monitor the ambient temperature. The onboard low-noise PGA has selectable gain of 1, 2, 64 or 128 and supports a full-scale differential input of ± 2.5 V, ± 1.25 V, ± 39 mV or ± 19.5 mV. The ADC has an effective resolution of 23.5 bits and consists of a 3rd order modulator and a 4th order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1232 / 4 can be clocked externally using an oscillator or a crystal. An internal oscillator is also available that requires no external components. Offset calibration is performed on request and the ADS1232 / 4 can be put into an energy-saving standby mode or turned off completely when the power is off. All functions of the ADS1232 / 4 are controlled with a simple pin-driven control. There are no digital registers to program to simplify software development. Data is output through an easily isolated serial interface that connects directly to the MSP430 and other microcontrollers.
The ADS1232 is available in a TSSOP-24 package and the ADS1234 is in a TSSOP-28. Both are fully specified from -40 ° C to + 105 ° C
Features
Complete front end for bridge sensors
Up to 23.5 effective bits
On board, low noise PGA
RMS noise:
17nV at 10SPS (PGA = 128)
44nV at 80SPS ( PGA = 128)
19.2-bit noise-free resolution at gain = 64
More than 100dB simultaneous 50Hz and 60Hz rejection
Flexible clocking:
On-board oscillator with low drift (± 3%) Optional external crystal
Selectable gains of 1, 2, 64 and 128
Simple ratiometric measurements - external voltage reference up to 5V
Selectable data rates from 10SPS or 80SPS
Two-channel differential input with built-in temperature sensor (ADS1232)
Four-channel differential input (ADS1234)
Simple serial digital interface
Supply range: 2.7V to 5.3V
-40 ° C to + 105 ° C temperature range