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

2.1 EVM Analog Interface

The ADS8681W features integrated analog front-end circuitry with a constant resistive input impedance, relieving the requirement of external buffer amplifier circuit. The ADS8681WEVM is designed for easy interfacing with analog sources. This section covers the details of the front-end circuit including jumper configuration for different input test signals and board connectors for single-ended and differential sources.