ADS131M02IPWR

Analog To Digital Converters (ADC) Overview

The ADS131M02IPWR is a two-channel, simultaneously-sampling, 24-bit delta-sigma analog-to-digital converter in a 20-pin TSSOP package. It operates on 2.7-V to 3.6-V analog and digital supplies with power consumption of 2.3 mW at 3 V. The device supports programmable data rates up to 64 kSPS and gains from 1 to 128. Key electrical specifications include a dynamic range of 102 dB at gain = 1 (4 kSPS), total harmonic distortion of -100 dB, and crosstalk of -120 dB. It features an integrated low-drift 1.2-V reference, channel-to-channel phase calibration, and SPI interface.

Analog To Digital Converters (ADC) Feature Summary

• Simultaneous sampling of two differential inputs with high-impedance inputs for direct sensor connection
• Integrated negative charge pump allowing input signals below ground
• Programmable channel-to-channel phase delay calibration for energy measurement accuracy
• Current-detect mode enabling extremely low power tamper detection

Analog To Digital Converters (ADC) Applications

• Electricity meters: commercial and residential
• Circuit breakers
• Protection relays
• Power quality meters
• Battery test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix 'PW' corresponds to the 20-pin TSSOP package configuration. Confirm that the specific revision matches the April 2021 datasheet update which changed the maximum data rate to 64 kSPS. Ensure compatibility with the required operating temperature range of –40°C to +125°C for industrial applications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous sampling of two channels is required for precise power metrology. The internal 1.2-V reference reduces PCB area compared to external references. Consider the 20-pin TSSOP package if leadless WQFN options are not suitable for the assembly process. Verify that the 64 kSPS maximum data rate meets the system's bandwidth requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS131M02 family of 24-bit delta-sigma ADCs designed for energy metering. It shares architectural similarities with the ADS131M03 and ADS131M04 but differs in channel count. The IPWR suffix indicates the industrial temperature grade and TSSOP packaging variant within the Texas Instruments portfolio.

Analog To Digital Converters (ADC) Replacement Considerations

ADS131M02IPWT serves as a leadless alternative in the same series.