What this ADC brings to the board
The Texas Instruments ADS131M02IPWT is a 24-bit sigma-delta ADC with two differential inputs, a built-in PGA, and simultaneous sampling — a combination that targets energy metering, industrial monitoring, and precision data-acquisition front-ends. The sigma-delta architecture and 32k SPS sampling rate give it the dynamic range to resolve small signals in noisy environments, while the internal reference and SPI interface simplify the BOM count. The -40°C to 125°C operating range qualifies it for outdoor telecom cabinets, motor-drive enclosures, and under-hood automotive sensor interfaces.
32k SPS and 24-bit resolution — what the ratings mean for the BOM
The 32k SPS sampling rate sets the measurement bandwidth for this ADC. The 24-bit resolution provides theoretical dynamic range for the PGA to handle large or small signals without losing headroom.
Supply voltage and interface — fitting into a mixed-voltage system
The analog supply accepts 2.4 V to 3.6 V; the digital interface runs from 1.65 V to 3.6 V. That separate digital supply rail means the ADC can talk directly to a low-voltage MCU without a level shifter.