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

1.3 Specification

The following specifications are applicable to the ADS8681WEVM board and the PHI.

Table 1-1 ADS8681WEVM-PDK Specifications
Parameter Conditions

Value
Temperature Recommended operating free-air temperature range, TA 15°C ≤ TA ≤ 35°C
External power supply voltage Recommended voltage range for TP2 to GND 6V ≤ VEXT ≤ 9V

Analog input range

AIN_P − AIN_M

 Input range = ±3 × VREF -12.288V ≤ AIN_x ≤ 12.288V
Input range = ±2.5 × VREF -10.24V ≤ AIN_x ≤ 10.24V
Input range = ±1.5 × VREF -6.144V ≤ AIN_x ≤ 6.144V
Input range = ±1.25 × VREF -5.12V ≤ AIN_x ≤ 5.12V
Input range = ±0.625 × VREF -2.56V ≤ AIN_x ≤ 2.56V
Input range = 3 × VREF 0V ≤ AIN_x ≤ 12.288V
Input range = 2.5 × VREF 0V ≤ AIN_x ≤ 10.24V
Input range = 1.5 × VREF 0V ≤ AIN_x ≤ 6.144V
Input range = 1.25 × VREF 0V ≤ AIN_x ≤ 5.12V