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

2.2 ADC Input Signal Driver

The SAR ADC inputs terminate in switched-capacitor networks that create large instantaneous current loads when the switches are closed, which effectively makes the ADC inputs dynamically low impedance. The analog inputs of the ADC are therefore driven by an THS4561 used with a gain of 1 V/V configuration to maintain ADC performance with maximum loading at full device throughput of the ADS8354 of 700 kSPS.