SBAU416B November   2022  – January 2024 ADS9813

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Overview
    1. 1.1 ADS9813EVM and ADS9817EVM Features
  5. 2ADS9813EVM and ADS9817EVM Quick Start Guide
  6. 3Analog Interface
    1. 3.1 ADC Input SMA Connections
    2. 3.2 Voltage Reference
  7. 4Digital Interface and Clock Inputs
    1. 4.1 Digital Interface Connections
    2. 4.2 Clock Select
  8. 5Power Supplies
    1. 5.1 USB Power and When to Power the Board Externally
  9. 6ADS9813EVM and ADS9817EVM Software Reference
    1. 6.1 ADS9813EVM-GUI and ADS9817EVM-GUI Software Installation
    2. 6.2 USB Driver Installation
    3. 6.3 Using the CONFIG Tab
    4. 6.4 Using the Capture Tab
    5. 6.5 Using the INL/DNL Tool
    6. 6.6 Using the Histogram Tab
  10. 7Schematics, Layouts, and Bill of Materials
    1. 7.1 Schematics
      1. 7.1.1 ADS9813EVM Schematics
      2. 7.1.2 ADS9817EVM Schematics
    2. 7.2 Layout
    3. 7.3 Bill of Materials (BOM)
      1. 7.3.1 ADS9813EVM Bill of Materials (BOM)
      2. 7.3.2 ADS9817EVM Bill of Materials (BOM)
  11. 8Revision History

4.2 Clock Select

The ADS9813EVM and ADS9817EVM use single-ended sampling clock for ADC conversions. The positive sampling clock input (SMPL_CLKP) is selected using jumper J29. Install a shunt in the [2-3] position (default) to source the clock signal from the TSWDC155EVM through the FMC connector. This allows the user to select the clock frequency from the options listed in the EVM GUI.

An external clock source can also be used to control ADC conversions. Connect a low-jitter clock source to SMA connector J28 and install a shunt in the [1-2] position on J29.

The negative source of the sample clock (SMPL_CLKM) can be sourced from either the FMC connector (FMC_SMPL_CLKM) or GND through R22 or R35, respectively. By default, R35 is populated and R22 is uninstalled.

GUID-20230523-SS0I-BC2B-KWDR-GLS1K2FC3RNS-low.svgFigure 4-3 Sample Clock Selection