ADS131M03IPWR

Analog To Digital Converters (ADC) Overview

The ADS131M03IPWR is a three-channel, simultaneously-sampling, 24-bit delta-sigma analog-to-digital converter (ADC) in a 20-pin TSSOP package. It features programmable data rates up to 64 kSPS and gains ranging from 1 to 128. The device operates on 2.7-V to 3.6-V analog and digital supplies with low power consumption of 3.6 mW at 3 V. Key electrical specifications include a dynamic range of 102 dB at gain = 1 and 4 kSPS, total harmonic distortion of –100 dB, and an integrated low-drift 1.2-V reference. It supports high-impedance inputs for direct sensor connection and includes channel-to-channel phase delay calibration.

Analog To Digital Converters (ADC) Feature Summary

• Three simultaneous sampling differential inputs with independent channel configuration
• Integrated negative charge pump allowing input signals below ground potential
• Programmable channel-to-channel phase delay calibration for signal alignment
• Optional cyclic redundancy check (CRC) on communications and register map

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 specific ordering suffix IPWR corresponds to the 20-pin TSSOP package variant when sourcing components. Confirm that the required operating temperature range aligns with the specified industrial limits of –40°C to +125°C. Ensure supply voltage requirements match the 2.7-V to 3.6-V specification for both analog and digital domains before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring synchronized multi-channel acquisition with high resolution. Evaluate the trade-off between data rate and noise performance, as dynamic range decreases at higher gains and speeds. Consider the integration of the internal 1.2-V reference and PGA to simplify external circuit design compared to discrete solutions.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS131M03 family of delta-sigma ADCs designed for energy metrology. The IPWR suffix specifically denotes the surface-mount TSSOP-20 package option. Other variants in the series may offer different pin counts or package styles, such as WQFN, while maintaining identical core conversion capabilities.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes within the same product line include the leadless WQFN variant ADS131M03IRUKR. Cross-family replacements require verification of pin compatibility and electrical parameter matching.