SBAU315B July   2018  – March 2025 ADS9224R , ADS9234R

 

  1.   1
  2.   ADS9224REVM-PDK
  3.   Trademarks
  4. 1Overview
    1. 1.1 ADS9224REVM-PDK Features
    2. 1.2 ADS9224REVM Features
  5. 2Analog Interface
    1. 2.1 Connectors for Signal Source
    2. 2.2 ADC Differential Input Signal Driver
      1. 2.2.1 Input Signal Path
    3. 2.3 ADS9224R Internal Reference
  6. 3Digital Interfaces
    1. 3.1 multiSPI for ADC Digital IO
  7. 4Power Supplies
  8. 5Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface (GUI) Software Installation
  9. 6Operation
    1. 6.1 EVM GUI Global Settings for ADC Control
    2. 6.2 Register Map Configuration Tool
    3. 6.3 Time Domain Display Tool
    4. 6.4 Spectral Analysis Tool
    5. 6.5 Histogram Tool
  10. 7ADS9224REVM Bill of Materials, PCB Layout, and Schematics
    1. 7.1 Bill of Materials
    2. 7.2 PCB Layout
    3. 7.3 Schematics
  11. 8Revision History

2.1 Connectors for Signal Source

The ADS9224REVM is designed for easy interfacing to multiple analog sources. SMA connectors allow the EVM to have input signals connected through coaxial cables. In addition, header connectors JP1 through JP4 provide a convenient way to connect input signals. All analog inputs are buffered by the THS4551 high-speed FDA in order to properly drive the ADS9224R ADC inputs.

Table 2-1 J2 to J5 SMA Analog Interface Connections
Pin Number Signal Description
J2 AIN-_A CHA negative differential input. This SMA connector can be grounded by installing a shunt on JP1 for single-ended signals.
1-kΩ input impedance
J3 AIN+_A CHA positive differential input or input for single-ended signals.
1-kΩ input impedance
J4 AIN+_B CHB positive differential input or input for single-ended signals.
1-kΩ input impedance
J5 AIN-_B CHB negative differential input. This SMA connector can be grounded by installing a shunt on JP4 for single-ended signals.
1-kΩ input impedance
Table 2-2 JP1 to JP4 Header Descriptions
Pin Number Signal Description
JP1.1 AIN-_A CHA negative differential input. This SMA connector can be grounded by installing a shunt on JP1 for single-ended signals.
1-kΩ input impedance.
JP2.1 AIN+_A CHA positive differential input or input for single-ended signals.
1-kΩ input impedance.
JP3.1 AIN+_B CHB positive differential input or input for single-ended signals.
1-kΩ input impedance.
JP4.1 AIN-_B CHB negative differential input. This SMA connector can be grounded by installing a shunt on JP4 for single-ended signals.
1-kΩ input impedance.