ADS131M08IRSNR

Analog To Digital Converters (ADC) Overview

The ADS131M08IRSNR is an eight-channel, simultaneously-sampling, 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a leadless 32-pin WQFN package and operates over an industrial temperature range of –40°C to +125°C. The device supports programmable data rates up to 32 kSPS and offers programmable gain settings from 1 to 128. Key electrical specifications include a signal-to-noise ratio of 101 dB at gain = 1, a spurious-free dynamic range of 103 dB, and total harmonic distortion of –100 dB. It utilizes a low-drift internal 1.2-V voltage reference and communicates via an SPI interface.

Analog To Digital Converters (ADC) Feature Summary

• Eight differential inputs with simultaneous sampling capability for synchronized multi-channel acquisition
• Integrated low-drift 1.2-V internal voltage reference to minimize printed circuit board area
• Programmable channel-to-channel phase delay calibration with 244-ns resolution
• Optional cyclic redundancy check (CRC) on communications and register map to ensure data integrity

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 'RSNR' corresponds to the 32-pin WQFN package variant when sourcing components. Confirm that the supply chain documentation matches the manufacturer's official orderable addendum for the ADS131M08 series. Ensure compliance with the specified industrial temperature range requirements for the intended deployment environment.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-resolution simultaneous sampling across multiple channels. The integrated PGA allows direct interfacing with sensors such as current transformers or Rogowski coils without external amplification. Consider the thermal performance metrics provided in the datasheet when designing the PCB layout for heat dissipation in enclosed environments.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS131M08 family of precision analog-to-digital converters designed for energy metrology. The 'IRS' designation indicates the leadless WQFN package option, while the 'NR' suffix typically denotes the reel packaging configuration. This family shares core architectural features but differs in physical footprint and shipping format.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS131M08IPBS serves as a pin-compatible alternative utilizing a 32-pin TQFP package instead of the WQFN form factor. Both variants share identical electrical characteristics and functionality within the same product family.