SBAU440 April   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 ADS9219EVM Quick Start Guide
    2. 2.2 Analog Interface
      1. 2.2.1 High-bandwidth, Fully-Differential Circuit: THS4541
      2. 2.2.2 Voltage Reference
    3. 2.3 Power Supplies
      1. 2.3.1 USB Power and When to Power the Board Externally
  9. 3Software
    1. 3.1 Digital Interface and Clock Inputs
      1. 3.1.1 Digital Interface Connections
      2. 3.1.2 Clock Select
    2. 3.2 ADS9219EVM Software Reference
      1. 3.2.1 ADS9219EVM-GUI Software Installation
      2. 3.2.2 USB Driver Installation
      3. 3.2.3 Using the CONFIG Tab
      4. 3.2.4 Using the Capture Tab
      5. 3.2.5 Using the INL/DNL Tool
      6. 3.2.6 Using the Histogram Tab
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation

3.2.5 Using the INL/DNL Tool

The INL/DNL tool measures the linearity of the of the ADS9219EVM by applying a full-scale, low-distortion sinusoidal input signal. The accuracy improves if the number of hits per code is increased at the cost of extra test time. Select the channel to measure and the hits per code. An input signal greater than full-scale is required to verify that all ADC codes are tested. An input signal of +0.1 dBFS is sufficient. Then press the GET INL/DNL button to run this tool as shown in Figure 4-9.

GUID-20221025-SS0I-VGKJ-1PQS-S9LWVKWLCSQQ-low.pngFigure 3-9 Using the INL/DNL Tool