SBAU446 December   2023 ADC3683-SP

 

  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. 2Software
    1. 2.1 Software Description
    2. 2.2 Software Installation
    3. 2.3 GUI Installation
  7. 3Hardware
    1. 3.1 Additional Images
    2. 3.2 Power Requirements
    3. 3.3 Interfaces
    4. 3.4 Test Points
    5. 3.5 Setup
  8. 4Implementation Results
    1. 4.1 Evaluation Setup
    2. 4.2 Performance Data and Results
  9. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  10. 6Additional Information
    1. 6.1 Trademarks

3.4 Test Points

The EVM has nine test points located on the board. There are four GND test points, one VREF test point, one REFBUF test point, one AVDD_SENSE test point, and one DVDD_SENSE test point.

The VREF test point is used to supply 3.3 V to the on board REF35160QDBVR Precision Voltage Reference. This chip is what supplies the ADC a 1.6 V external reference.

The REFBUF test point is not used in the default configuration. The REFBUF pin voltage can control the reference to the part if desired as opposed to doing this via SPI.

The AVDD_SENSE and IOVDD_SENSE test points are not used in the default configuration. These test points can be used when supplying AVDD and IOVDD independently (needs a board modification to accomplish this) to verify precise supply voltage.