SBAU416C November   2022  – March 2025 ADS9813 , ADS9817

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 ADS9813EVM and ADS9817EVM Quick Start Guide
    3. 2.3 Analog Interface
      1. 2.3.1 ADC Input SMA Connections
      2. 2.3.2 Voltage Reference
    4. 2.4 Digital Interface and Clock Inputs
      1. 2.4.1 Digital Interface Connections
      2. 2.4.2 Clock Select
    5. 2.5 Power Supplies
      1. 2.5.1 USB Power and When to Power the Board Externally
  7. 3Software
    1. 3.1 ADS9817EVM and ADS9813EVM Software Installation
      1. 3.1.1 USB Driver Installation
    2. 3.2 ADS9817EVM Software (ADS9817EVM-GUI)
      1. 3.2.1 Using the CONFIG Tab
      2. 3.2.2 Using the Capture Tab
      3. 3.2.3 Using the INL/DNL Tool
      4. 3.2.4 Using the Histogram Tab
    3. 3.3 ADS9813EVM Software (ADS98XXEVM-GUI)
      1. 3.3.1 Using Configuration Tab
      2. 3.3.2 Using the Data Capture Tab
      3. 3.3.3 Using the Linearity Analysis Tab
      4. 3.3.4 Using the Histogram Analysis Tab
  8. 4Hardware Design Files
    1. 4.1 Schematics
      1. 4.1.1 ADS9813EVM Schematics
      2. 4.1.2 ADS9817EVM Schematics
    2. 4.2 Layout
    3. 4.3 Bill of Materials (BOM)
      1. 4.3.1 ADS9813EVM Bill of Materials (BOM)
      2. 4.3.2 ADS9817EVM Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Related Documentation
  11. 7Revision History

3.3.4 Using the Histogram Analysis Tab

The Histogram tool represents the distribution of ADC output codes for a given sample set. The accuracy of the statistical summary can be improved by increasing number of samples, which increases the sample size at the cost of extra test time. Select the channel to measure and configure the number of samples, Vref, and ADC Full-scale. Then, press the GET HISTOGRAM button as shown in .

The cumulative effect of noise coupling to the ADC output comes from sources such as the input drive circuits, the reference drive circuit, the ADC power supply, and the ADC. The total noise is reflected in the standard deviation of the ADC output code histogram that is obtained by performing multiple conversions of a DC input applied to a given channel. Selecting the correct reference voltage gives the result in units of voltage instead of codes.

ADS9813EVM, ADS9817EVM Histogram DataFigure 3-14 Histogram Data