ADS131M03QPWRQ1

Analog To Digital Converters (ADC) Overview

The ADS131M03QPWRQ1 is a three-channel, simultaneous-sampling, 24-bit delta-sigma analog-to-digital converter (ADC) designed for automotive applications. It operates with analog and digital supplies ranging from 2.7 V to 3.6 V. The device supports programmable data rates up to 64 kSPS and offers gain settings from 1 to 128. Key electrical specifications include a dynamic range of 102 dB at gain = 1 and 4 kSPS, and 80 dB at gain = 64 and 4 kSPS. Total harmonic distortion is -100 dB. The input impedance is 330 kΩ for gains of 1, 2, and 4, and ≥ 1 MΩ for gains of 8 through 128. It features an integrated negative charge pump, allowing input signals below ground. The device is housed in a 20-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Three simultaneously sampling differential inputs with independent channel configuration
• Integrated low-drift 1.2-V voltage reference reducing printed circuit board area
• Programmable channel-to-channel phase delay calibration for sensor response compensation
• Cyclic redundancy check (CRC) on communications and register map to maintain integrity

Analog To Digital Converters (ADC) Applications

• Automotive battery management systems (BMS)
• EV charging stations
• Energy storage systems (ESS)

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'PWRQ1' corresponds to the 20-pin TSSOP package and automotive grade qualification. Confirm that the component meets AEC-Q100 Temperature Grade 1 requirements for operation between –40°C and +125°C. Ensure functional safety documentation availability is confirmed if the design requires ISO 26262 compliance support.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous multi-channel sampling is required for high-precision signal acquisition. The integrated PGA and negative charge pump simplify interface circuits for shunt resistors and temperature sensors. Consider the power modes to balance dynamic range against system power consumption constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS131M03-Q1 family of automotive-grade ADCs. It provides a specialized solution for cost-sensitive applications requiring wide dynamic range and low power. The device integrates an analog front-end with digital filters and calibration registers to minimize external component count.

Analog To Digital Converters (ADC) Replacement Considerations

Check for ADS131M03IPWR or ADS131M03IRUKR for non-automotive equivalents. Verify pin compatibility and software register mapping before substitution.