Texas Instruments ADS131M04, Руководство пользователя, Страница: 4 / 34

PHI Board
A-to-Micro-B USB
Cable
ADS131M04EVM
Included in kit
Signal
Source
ADS131M04
EVM GUI
EVM Overview
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4 SBAU332A – March 2019 – Revised June 2019
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ADS131M04 Evaluation Module
1 EVM Overview
The ADS131M04EVM is a platform for evaluating the performance of the ADS131M04, which is a 4-
channel, simultaneously-sampling, 24-bit,
ΔΣ ADC. The evaluation kit includes the ADS131M04EVM
board and the precision host interface (PHI) controller board that enables the accompanying computer
software to communicate with the ADC over the USB for data capture and analysis.
The ADS131M04EVM board includes the ADS131M04 ADC and all the peripheral analog circuits and
components required to extract optimum performance from the ADC.
The PHI board primarily serves three functions:
• Provides a communication interface from the EVM to the computer through a USB port
• Provides the digital input and output signals necessary to communicate with the ADS131M04
• Supplies power to all active circuitry on the ADS131M04EVM board
1.1 ADS131M04EVM Kit
The ADS131M04 evaluation module kit includes the following features:
• Hardware and software required for diagnostic testing as well as accurate performance evaluation of
the ADS131M04 ADC
• USB powered—no external power supply is required
• The PHI controller that provides a convenient communication interface to the ADS131M04 ADC over
USB 2.0 (or higher) for power delivery as well as digital input and output
• Easy-to-use evaluation software for 64-bit Microsoft Windows
®
7, Windows 8, and Windows 10
operating systems
• The software suite includes graphical tools for data capture, histogram analysis, and spectral analysis.
This suite also has a provision for exporting data to a text file for post-processing.
Figure 1 illustrates an example system setup for evaluation.
Figure 1. System Connection for Evaluation
1.2 ADS131M04EVM Board
The ADS131M04EVM board includes the following features:
• External signal source from differential pair headers
• Options to use external analog and digital power supplies
• Serial interface header for easy connection to the PHI controller
• Pin connections to monitor digital signals with a logic analyzer
• Onboard ultra-low noise low-dropout (LDO) regulator for excellent 3.3-V, single-supply regulation of all
analog circuits