SBAU407 april   2023 ADS8354

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 ADS8354EVM-PDK Features
    2. 1.2 ADS8354EVM Features
    3. 1.3 Related Documentation From Texas Instruments
  4. 2Analog Interface
    1. 2.1 Connectors for Analog Inputs
    2. 2.2 ADC Input Signal Driver
      1. 2.2.1 Input Signal Path
  5. 3Digital Interfaces
    1. 3.1 SPI for the ADC Digital I/O
  6. 4Power Supplies
    1. 4.1 ADC Input Driver Configuration
    2. 4.2 ADC Voltage Reference Configuration
  7. 5ADS8354EVM-PDK Initial Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface Software Installation
  8. 6ADS8354EVM-PDK Operation
    1. 6.1 EVM GUI Global Settings for ADC Control
    2. 6.2 Time Domain Display Tool
    3. 6.3 Spectral Analysis Tool
    4. 6.4 Histogram Analysis Tool
  9. 7Bill of Materials, Printed-Circuit Board Layout, and Schematics
    1. 7.1 Bill of Materials
    2. 7.2 PCB Layout
    3. 7.3 Schematics

4.2 ADC Voltage Reference Configuration

The ADS8354 has a low-noise, low-drift, 2.5-V internal voltage reference. By default, the ADS8354EVM is configured to work with the ADC internal reference voltage of 2.5 V. The same reference voltage is brought on pin 2 of jumpers JP7 and JP8 that can be used to drive the THS4561 common-mode voltage (VOCM) pin.

There is also a provision for using an external voltage reference for the ADC. The external reference voltage can be generated by populating JP7 and JP8 jumpers. When using an external reference, the ADS8354 internal voltage reference must be disabled and the device must be programmed to accept the external reference voltage on the REFIO_x pins.