Texas Instruments ADS1256IDBTG4

Description
The ADS1255 and ADS1256 are 24-bit, low-noise analog-to-digital converters (ADCs) that provide high-resolution measurement solutions for demanding applications. They feature a 4th-order delta-sigma modulator, programmable digital filter, and flexible input multiplexer with sensor detection. The selectable input buffer increases input impedance, while the programmable gain amplifier (PGA) offers gains from 1 to 64. The programmable filter allows for optimization between resolution (up to 23 bits noise-free) and data rate (up to 30kSPS). The converters support fast channel cycling and one-shot conversions with single-cycle settling. Communication is handled via an SPI-compatible serial interface, and onboard calibration supports self and system correction of offset and gain errors.

Features
24-bit resolution with no missing codes
Very low noise: up to 23 bits noise-free resolution
±0.0010% maximum nonlinearity
Data output rates up to 30kSPS
Fast channel cycling
18.6 bits noise-free resolution (21.3 effective bits) at 1.45kHz
One-shot conversions with single-cycle settling
Flexible input multiplexer with sensor detection:
Four differential inputs (ADS1256 only)
Eight single-ended inputs (ADS1256 only)
Chopper-stabilized input buffer
Low-noise PGA: 27nV input-referred noise
Self and system calibration for all PGA settings
5V tolerant SPI-compatible serial interface
Analog supply: 5V
Digital supply: 1.8V to 3.6V
Power dissipation:
As low as 38mW in normal mode
0.4mW in standby mode

Applications
Scientific instrumentation
Industrial process control
Medical equipment
Test and measurement
Weigh scales