ADS131M08QPBSRQ1

Analog To Digital Converters (ADC) Overview

The ADS131M08QPBSRQ1 is an automotive-grade, eight-channel, simultaneously sampling, 24-bit delta-sigma analog-to-digital converter (ADC). It operates with analog and digital supplies ranging from 2.7 V to 3.6 V and supports data rates up to 32 kSPS. The device features a programmable gain amplifier (PGA) with gains from 1 to 128, achieving a dynamic range of 102 dB at gain 1 and 80 dB at gain 64. It includes a low-drift internal 1.2-V reference, integrated negative charge pump for ground-referenced inputs, and channel-to-channel phase calibration. The component is housed in a 32-pin TQFP package and is qualified under AEC-Q100 Grade 1 for operation between –40°C and +125°C.

Analog To Digital Converters (ADC) Feature Summary

• AEC-Q100 qualified for automotive applications with functional safety capability documentation.
• Eight simultaneous-sampling differential inputs with high-impedance characteristics for direct sensor interfacing.
• Integrated negative charge pump enabling input signals below ground potential.
• Programmable channel-to-channel phase delay calibration to compensate for sensor phase response.

Analog To Digital Converters (ADC) Applications

• Automotive battery management systems (BMS) including current-shunt and voltage measurements.
• EV charging stations for DC and AC e-metering applications.
• Energy storage systems (ESS).

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'PBSRQ1' against the manufacturer's official orderable addendum to confirm the tape-and-reel packaging configuration. Ensure the design complies with AEC-Q100 Grade 1 requirements for the specified temperature range. Confirm that the functional safety documentation is accessible if the application requires ISO 26262 compliance assessment.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous multi-channel sampling is required for automotive power monitoring. The integrated PGA and phase calibration simplify signal conditioning for shunt resistors and thermistors. Consider the 32-kSPS maximum data rate and 102-dB dynamic range for precision requirements. Verify that the 32-pin TQFP footprint fits the PCB layout constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS131M0x-Q1 family of automotive delta-sigma ADCs. It shares architectural similarities with the non-automotive ADS131M08 but includes extended qualification for automotive environments. The 'Q1' suffix denotes automotive reliability standards, while 'PBSR' indicates the specific TQFP package and reel packaging variant.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS131M08IPBSRQ1 serves as a direct pin-compatible alternative within the same family. Verify that the non-automotive ADS131M08 variants meet the specific environmental and reliability requirements of the target automotive application before substitution.