SBAU394B April   2022  – August 2025

 

  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
    5. 1.5 Quick Start Guide
  6. 2Hardware
    1. 2.1 ADC Analog Input Signal Path
    2. 2.2 ADC Connections and Decoupling
    3. 2.3 Power Supplies
    4. 2.4 ADC Input Clock (CLK) Options
    5. 2.5 Digital-to-Analog Converter (DAC)
    6. 2.6 Digital Interface
    7. 2.7 Connection to the PHI
    8. 2.8 Digital Header
  7. 3Software Installation
  8. 4EVM Configuration and GUI Operation
    1. 4.1 EVM Configuration
    2. 4.2 GUI Operation
      1. 4.2.1 EVM GUI Global Settings for ADC Control
      2. 4.2.2 Register Map Configuration Tool
      3. 4.2.3 Time Domain Display Tool
      4. 4.2.4 Spectral Analysis Tool
      5. 4.2.5 Histogram Tool
      6. 4.2.6 DAC Configuration Tool
  9. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  10. 6Additional Information
    1. 6.1 Trademarks
  11. 7References
  12. 8Revision History

1.1 Introduction

This user's guide describes the characteristics, operation, and use of the ADS1285EVM-PDK. This EVM allows the user to evaluate the performance of the ADS1285, a 32-bit, 4-kSPS, 2-channel delta-sigma ADC for energy exploration applications. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the ADS1285EVM-PDK. Complete circuit descriptions, schematic diagrams, and bills of material are also included in this document.

The evaluation kit includes the ADS1285EVM-PDK board and the precision host interface (PHI) controller board. The PHI board enables the accompanying computer software to communicate with the ADC over the universal serial bus (USB) for data capture and analysis because the ADS1285EVM-PDK does not include a microprocessor on the board.

The PHI board primarily serves three functions:

  • Provides a communication interface from the EVM to the computer through a USB port
  • Provides the digital input and output signals necessary to communicate with the ADS1285EVM-PDK
  • Supplies power to all active circuitry on the ADS1285EVM-PDK board

The following related documents are available for download through the Texas Instruments web site at www.ti.com.

Table 1-1 Related Documentation
DeviceLiterature Number
ADS1285SBASAK6