SBAU408 august   2023 ADS7953

 

  1.   1
  2.   ADS7953EVM-PDK Evaluation Module
  3.   Trademarks
  4. 1Overview
    1. 1.1 ADS7953EVM-PDK Features
    2. 1.2 ADS7953EVM Features
  5. 2Analog Interface
    1. 2.1 Connectors for Analog Inputs
    2. 2.2 ADC Input Signal Driver
      1. 2.2.1 Input Signal Path
  6. 3Digital Interfaces
    1. 3.1 SPI for the ADC Digital I/O
  7. 4Power Supplies
    1. 4.1 ADC Voltage Reference Configuration
  8. 5ADS7953EVM-PDK Initial Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface Software Installation
  9. 6ADS7953EVM-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
    5. 6.5 Device Configuration
    6. 6.6 Alarm Configuration
  10. 7Schematic, Bill of Materials, and Printed-Circuit Board Layout
    1. 7.1 Schematic
    2. 7.2 Bill of Materials
    3. 7.3 PCB Layout

4 Power Supplies

The ADS7953 supports a wide range of operation on the analog supplies. The analog supply (+VA) operates from 2.7 V to 5.25 V. The same supply is used to power the two OPA192 amplifiers. The digital supply (+VBD) operates from 1.7 V to 5.25 V, independent of the analog supply.

The analog portion of the ADS7953EVM operates from a 5-V supply (+5V) generated using the TPS7A47 low-noise, low-dropout regulator. The analog supply can be configured to run off an external power supply provided on the terminal block J3. For an external analog supply, short JP2 with a shunt in positions 2-3. Otherwise, keep the shunt on the default positions 1-2 for the on-board TPS7A47 generated supply.

The digital portion of the ADC and EEPROM operates from a 3.3-V supply sourced from the PHI. If the PHI is not connected to the ADS7953EVM, an external digital supply can be provided through the terminal block J6.