This user's guide describes the design and operation of the ADS131B26Q1EVM-PDK. This evaluation module (EVM) is an evaluation board for the ADS131B26-Q1, a complete analog front-end (AFE) for automotive electrical vehicle (EV) battery management systems (BMS) that integrates two pairs of simultaneous-sampling, high-precision, 24-bit analog-to-digital converter (ADC) channels to redundantly measure battery current and battery pack voltage with high resolution and accuracy. The EVM allows evaluation of all aspects of the ADS131B26-Q1. This user's guide covers the operation of the ADS131B26Q1EVM-PDK. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the ADS131B26Q1EVM-PDK. The terms PHI controller, PHI, and host are synonymous with the precision host interface (PHI) controller board that interfaces the EVM to the PC. Complete circuit descriptions, schematic diagrams, and bill of materials are included in this document.
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The evaluation kit includes the ADS131B26Q1EVM-PDK board and the precision host interface (PHI) controller board. The PHI board enables the accompanying computer software to communicate with the ADC over the universal serial bus (USB) for data capture and analysis.
The PHI board primarily serves three functions:
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The ADS131B26-Q1 evaluation module kit includes the following features:
The following instructions are a step-by-step guide to connecting the ADS131B26Q1EVM-PDK to the computer and evaluating the performance of the ADS131B26-Q1: