SBAU448 September   2024 ADS8681W

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Performance Development Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Analog Interface
      1. 2.1.1 ADC Analog Input Signal Path
      2. 2.1.2 Onboard ADC Reference
    2. 2.2 Power Supplies
  9. 3Software
    1. 3.1 Digital Interfaces
      1. 3.1.1 multiSPITM SPI for ADC Digital IO
    2. 3.2 ADS8681WEVM-PDK Initial Setup
      1. 3.2.1 Default Jumper and Switch Settings
      2. 3.2.2 EVM Graphical User Interface (GUI) Software Installation
  10. 4Implementation Results
    1. 4.1 ADS8681WEVM-PDK Operation
      1. 4.1.1 EVM GUI Global Settings for ADC control
      2. 4.1.2 Register Map Configuration Tool
      3. 4.1.3 Time Domain Display Tool
      4. 4.1.4 Histogram Tool
      5. 4.1.5 Spectral Analysis Tool
      6. 4.1.6 Linearity Analysis Tool
  11. 5Hardware Design Files
    1. 5.1 ADS8681WEVM-PDK Schematic
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Related Documentation

3.2.1 Default Jumper and Switch Settings

Upon unpacking, the EVM is already configured with the default jumper settings, as shown in Figure 3-1.

ADS8681WEVM-PDK Default Settings for Jumper and SwitchFigure 3-1 Default Settings for Jumper and Switch

The default setting includes no jumpers installed on J5 or J8, making J1 and J7 the AIN_P and AIN_M input signal sources respectively. The default position of J4 is position 1-2 so that the linear regulator is powering the system using 5.5V from the PHI controller. Place switch S1 at position 1-2 (to the top) to enable EEPROM write protection. Leave J3 open so the ADC’s internal voltage reference is used when powering up. J6 is open to disconnect ALARM output connection to the PHI controller. The locations for the default jumpers and switch are shown in Figure 3-1.