1 EVM Overview
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:
• Provides a communication interface between the EVM and the computer through a USB port
• Provides the digital input and output signals necessary to communicate with the ADS131B26Q1EVM-PDK
• Supplies power to all active circuitry on the ADS131B26Q1EVM-PDK board
The following related documents are available for download through the Texas Instruments web site at
Table 1-1. Related Documentation
Device
Literature Number
ADS131B26-Q1
SN6505B-Q1
ISO7762-Q1
ISO7761-Q1
TMP61-Q1
LMT84-Q1
1.1 ADS131B26Q1EVM-PDK Features
The ADS131B26-Q1 evaluation module kit includes the following features:
• Contains all support circuitry needed for the ADS131B26-Q1
• USB powered: No external power supply is required
• Analog-to-digital converter (ADC) voltage supply options:
– DC/DC converter output provides APWR and DPWR supplies, which the ADC uses to generate AVDD
and DVDD with the respective integrated low-dropout regulators (LDOs)
– APWR and DPWR can be provided externally while still using the respective integrated LDOs when the
external supply is between 4 V and 16 V
– APWR and DPWR can be shorted to the respective LDO outputs if the external supply is between 3 V and
3.6 V
• Clock options: Internal ADC clock, onboard 8.192-MHz crystal oscillator, or external clock with a subminiature
version A (SMA) connector
• Input signals provided by terminal blocks connect to various application circuits for voltage, current, and
temperature measurements
• Digital inputs and outputs are connected to a dual-row DEBUG header for connections to a logic analyzer or
external controller
• EVM GUI includes a complete register map page for ease of device configuration and a built-in analysis tool
suite complete with scope, FFT, and histogram displays
• Two 16-bit multiplexed ADC channels allow for measuring multiple single-ended and pseudo-differential
inputs in a specified sequence in conjunction with the four 24-bit simultaneous-sampling ADC channels
EVM Overview
4
ADS131B26Q1EVM-PDK Evaluation Module
SBAU413 – OCTOBER 2022
Copyright © 2022 Texas Instruments Incorporated
