ADS131B23QPHPRQ1

Power Management - Specialized Overview

The ADS131B23-Q1 is an automotive-grade, fully integrated high-voltage battery pack monitor designed for electric vehicle battery management systems. It features three simultaneous-sampling, 24-bit sigma-delta analog-to-digital converters (ADCs) with a maximum sampling rate of 64 kSPS per channel. The device supports pseudo-differential and single-ended inputs via an SPI interface. It operates on dual 3.3 V supplies for analog and digital domains, includes an internal 1.25 V reference, and functions within a temperature range of -40°C to +125°C in a QFN package.

Power Management - Specialized Feature Summary

• Integrates three simultaneous-sampling, 24-bit ADCs optimized for high-voltage battery monitoring applications
• Supports programmable full-scale input ranges for current-shunt measurements and voltage sensing
• Features an internal reference voltage source to simplify system design and reduce component count
• Provides a serial peripheral interface (SPI) for high-speed data communication with microcontrollers

Power Management - Specialized Applications

• Electric vehicle battery management systems (BMS)
• High-voltage battery pack monitoring
• Automotive energy storage measurement

Power Management - Specialized Procurement Notes

Verify the complete part number including suffixes such as 'QPHPRQ1' to ensure correct package type, tape-and-reel quantity, and automotive qualification status. Confirm that the specific revision matches the required datasheet version for accurate electrical characteristics. Cross-reference the manufacturer's official ordering guide to validate availability and lead times through authorized distribution channels before procurement.

Power Management - Specialized Selection Notes

Select this component when simultaneous multi-channel sampling is required for precise state-of-charge estimation in EV applications. The integrated high-voltage front-end capability reduces external component complexity compared to discrete solutions. Ensure the system architecture supports the required SPI clock speeds and that the thermal environment remains within the specified operating range for reliable long-term performance.

Power Management - Specialized Part Context

This device belongs to the ADS131B series of automotive analog-to-digital converters. It is specifically engineered for high-voltage environments where multiple channels must be sampled concurrently. The Q1 designation indicates compliance with automotive quality standards, distinguishing it from commercial variants while maintaining compatibility with standard battery management system architectures.

Power Management - Specialized Replacement Considerations

Direct substitutes include other ADS131B series devices with matching channel counts and sampling rates, such as the ADS131B04-Q1 for lower channel requirements or the ADS131B26-Q1 for higher channel density. Verify pinout compatibility and software register configuration differences when migrating between similar family members to ensure seamless integration without hardware redesign.

Power Management - Specialized FAQ

What is the maximum sampling rate per channel?

Each of the three ADC channels can operate at a maximum sampling rate of 64 kSPS.

Does the device include an internal reference?

Yes, the ADS131B23-Q1 integrates an internal reference voltage of 1.25 V.

What input types are supported?

The device supports both pseudo-differential and single-ended input configurations.