SBAU353 October   2021

 

  1.   Trademarks
  2. 1EVM Overview
    1. 1.1 ADS131A04EVM Kit
    2. 1.2 ADS131A04EVM Board
  3. 2ADS131A04EVM Quick Start Guide
  4. 3EVM Analog Interface
    1. 3.1 ADC Analog Input Signal Path
    2. 3.2 ADC External Clock (XTAL1/CLKIN and XTAL2) Options
  5. 4Digital Interface
    1. 4.1 SPI Communication
    2. 4.2 Connection to the PHI
    3. 4.3 Digital Header
    4. 4.4 LaunchPad Connectors
  6. 5Power Supplies
  7. 6ADS131A04EVM Initial Setup
    1. 6.1 Default Jumper Settings
    2. 6.2 EVM Graphical User Interface (GUI) Software Installation
  8. 7ADS131A04EVM Software Reference
    1. 7.1 EVM GUI Global Settings for ADC Control
    2. 7.2 Register Map Configuration Tool
    3. 7.3 Time Domain Display Tool
    4. 7.4 Spectral Analysis Tool
    5. 7.5 Histogram Tool
  9. 8ADS131A04EVM Bill of Materials, PCB Layout, and Schematic
    1. 8.1 Bill of Materials
    2. 8.2 PCB Layout
    3. 8.3 Schematic
  10. 9References

1 EVM Overview

The ADS131A04EVM is a platform for evaluating the performance of the ADS131A04, which is a 4-channel, simultaneously-sampling, 24-bit, ΔΣ ADC. The evaluation kit includes the ADS131A04EVM 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 ADS131A04EVM board includes the ADS131A04 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 ADS131A04
  • Supplies power to all active circuitry on the ADS131A04EVM board