SBAU411 February   2023 ADS127L21

 

  1.   Abstract
  2.   Trademarks
  3. 1EVM Overview
    1. 1.1 ADS127L21 EVM Kit
    2. 1.2 ADS127L21EVM Board
    3. 1.3 ADS127L21EVM-PDK-GUI Unsupported Features
    4. 1.4 Related Documentation
  4. 2Analog Interface
    1. 2.1 EVM Analog Input Options
    2. 2.2 ADC Connections and Decoupling
    3. 2.3 ADC Input Drive Amplifiers
    4. 2.4 VCOM Buffer
    5. 2.5 Onboard Voltage Reference
    6. 2.6 External Voltage Reference
    7. 2.7 Clock Tree
  5. 3Digital Interface
    1. 3.1 Serial Interface
    2. 3.2 I2C bus for Onboard EEPROM
  6. 4Power Supplies
    1. 4.1 Power Connection and Configuration
    2. 4.2 Low Dropout Regulator (LDO)
  7. 5ADS127L21 EVM Software Installation
  8. 6EVM Operation
    1. 6.1 Connecting the Hardware
    2. 6.2 Optional EVM Connections
    3. 6.3 EVM GUI Global Settings for ADC Control
    4. 6.4 Time Domain Display
    5. 6.5 Frequency Domain Display
    6. 6.6 Histogram Display
    7. 6.7 Digital Filter Configuration
    8. 6.8 Digital Filter Response
  9. 7Bill of Materials, Schematics, and Layout
    1. 7.1 Bill of Materials
    2. 7.2 Schematics
    3. 7.3 Board Layout

1.1 ADS127L21 EVM Kit

The ADS127L21 evaluation module kit includes the following features (Figure 1-1):

  • Hardware and software required for diagnostic testing as well as accurate performance evaluation of the ADS127L21 ADC.
  • USB powered—no external power supply is required.
  • The PHI controller that provides a convenient communication interface to the ADS127L21 ADC over USB 2.0 (or higher) for power delivery as well as digital input and output.
  • Windows® 10 operating systems.
  • Easy-to-use evaluation software for 64-bit Microsoft® Windows®.
  • The software suite includes graphical tools for data capture, histogram analysis, spectral analysis, and custom configuration of the programmable digital filters. This suite also has a provision for exporting data to a text file for post-processing.
Figure 1-1 System Connection for Evaluation