SBAU436A January   2024  – February 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 EVM Analog Input Options
      1. 2.1.1 Differential SMA Inputs
      2. 2.1.2 Single-Ended SMA Inputs
      3. 2.1.3 Differential Input Pins
    2. 2.2 Power Supplies
    3. 2.3 ADC Connections and Decoupling
    4. 2.4 ADC Input Amplifiers
    5. 2.5 VCOM Buffer
    6. 2.6 Voltage Reference
    7. 2.7 Clock Tree
    8. 2.8 Digital Interfaces
  9. 3Software
    1. 3.1 ADS1278EVM Software Installation
  10. 4Implementation Results
    1. 4.1 Hardware Connections
    2. 4.2 Optional EVM Configuration
    3. 4.3 GUI Settings for ADC Control
    4. 4.4 Time Domain Display
    5. 4.5 Frequency Domain Display
    6. 4.6 Histogram Display
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7References
  14. 8Revision History

1.1 Introduction

The ADS1278EVM-PDK is a platform for evaluating the performance of the ADS1278, a 24-bit, 8-channel, simultaneous sampling delta-sigma ADC. The evaluation kit includes the ADS1278 EVM board and the precision host interface (PHI) controller board that enables the accompanying computer software to communicate with the ADC over the USB for data capture and analysis. The ADS1278 EVM board includes the ADS1278 and all the peripheral analog circuits and components required to evaluate the performance of the ADS1278. The PHI board provides a communication interface from the ADS1278 EVM to the computer through a USB port.

This user's guide includes complete circuit descriptions, schematic diagrams, and a bill of materials. Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with the ADS1278 EVM.

Note: The ADS1278 EVM and software can also support the 4-channel ADS1274 device. However, the user must manually remove the ADS1278 and install the ADS1274. See Section 5.2 for the location of the ADS1278 on the EVM. The ADS1274 is not discussed further in this document.