SBAU413A october   2022  – may 2023

 

  1.   Abstract
  2.   Trademarks
  3. 1EVM Overview
    1. 1.1 ADS131B26Q1EVM-PDK Features
    2. 1.2 ADS131B26Q1EVM-PDK Quick-Start Guide
  4. 2Analog Interface
    1. 2.1 Terminal Blocks and Test Points
    2. 2.2 ADC1A and ADC1B
    3. 2.3 ADC2A and ADC2B
    4. 2.4 ADC3A and ADC3B
  5. 3Digital Interface
    1. 3.1 Connection to the PHI Controller
    2. 3.2 Digital Header
    3. 3.3 Clock Options
  6. 4Power Supplies
    1. 4.1 DC/DC Converter Circuit
    2. 4.2 ADC Power Supplies
    3. 4.3 Power Supply and Voltage Reference Decoupling
  7. 5ADS131B26Q1EVM-PDK Initial Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface (GUI) Software Installation
  8. 6ADS131B26Q1EVM-PDK Software Reference
    1. 6.1 Global Settings for ADC Control
    2. 6.2 Register Map Configuration
      1. 6.2.1 Register Map Basics
      2. 6.2.2 ADC1A, ADC3A and ADC1B, ADC3B Configuration
      3. 6.2.3 ADC2A and ADC2B Configuration
    3. 6.3 Analysis Tools
      1. 6.3.1 Time Domain Display
      2. 6.3.2 Spectral Analysis Tool
      3. 6.3.3 Histogram Analysis
      4. 6.3.4 Sequencer Analysis
  9. 7ADS131B26Q1EVM-PDK Bill of Materials, PCB Layout, and Schematics
    1. 7.1 Bill of Materials (BOM)
    2. 7.2 PCB Layout
    3. 7.3 Schematics
  10. 8Revision History

1.2 ADS131B26Q1EVM-PDK Quick-Start Guide

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:

  1. Review the default jumper settings in Section 5.1 and GUI software installation in Section 5.2.
  2. Connect the ADS131B26Q1EVM-PDK to the PHI controller. Install the two screws as indicated in Figure 1-1.
  3. Connect the PHI controller to your PC using the provided USB micro cable. Three LEDs illuminate on the PHI controller to indicate connectivity to the PC.
    1. LED D5 lights up solid, indicating that the PHI is powered up.
    2. LEDs D1 and D2 start blinking at different rates to indicate that the PHI is booted up and communicating with the PC. Figure 1-1 shows the resulting LED indicators.
      GUID-20220920-SS0I-WTZS-SFDH-PSS6GJWLW0WT-low.svg Figure 1-1 ADS131B26Q1EVM-PDK PHI Connection and LED Indicators
  4. Launch the ADS131B26Q1EVM-PDK GUI software and power is supplied to the EVM. The default installation path is C:\Program Files (x86)\Texas Instruments\ADS131B26-Q1 EVM.
  5. When the GUI finishes loading and is connected to the EVM hardware, the screen appears as illustrated in Figure 6-1. The GUI consists of multiple Pages, which include:
    • Register Map Config
    • Time Domain Display
    • Spectral Analysis
    • Histogram Analysis
    • Channel Configurations
    • Sequencer Configurations
    Below the Pages section are the basic SPI op-code commands, the Data Capture Configuration controls, and the current Clocks and Data Rate information. Section 6.1 details the EVM GUI pages and data capture controls.