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

2 Analog Interface

The ADS8354 is a low-power, dual-channel, simultaneous-sampling ADC that supports differential analog inputs. The ADS8354EVM uses two THS4561 fully-differential amplifiers to drive the differential ADC channel inputs (AINP_A, AINM_A and AINP_B, AINM_B) and to center the input signal around the required common-mode voltage for the ADS8354. An OPA320 device is used to buffer the selected common-mode voltage (VOCM). The ADS8354EVM is designed for easy interfacing to analog sources. This section describes the front-end driver circuitry details, including jumper configurations for the analog input signal source.