SBAU456 September   2024 ADS9212

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 ADS9212EVM Quick Start Guide
    2. 2.2 Power Supplies
      1. 2.2.1 USB Power and When to Power the Board Externally
    3. 2.3 Analog Interface
      1. 2.3.1 ADC Input SMA Connections
      2. 2.3.2 Voltage Reference
    4. 2.4 Digital Interface Connections
    5. 2.5 Digital Interface and Clock Inputs
  7. 3Software
    1. 3.1 ADS9212EVM-GUI Software Installation
    2. 3.2 USB Driver Installation
    3. 3.3 Using the CONFIG Tab
    4. 3.4 Using the Capture Tab
    5. 3.5 Using the INL/DNL Tool
    6. 3.6 Using the Histogram Tab
  8. 4Hardware Design Files
    1. 4.1 Schematics
      1. 4.1.1 ADS9212EVM Schematics
    2. 4.2 Layout
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Related Documentation

2.3.1 ADC Input SMA Connections

Each ADC channel is connected to two SMA input connectors. The AIN3P and AIN3M SMA connecters (J7 and J6) correspond to CHA on the GUI software. The AIN6P and AIN6M SMA connecters (J16 and J15) correspond to CHB on the GUI software.

0402 footprints are provided to add a first-order, low-pass filter network on all ADC channels. By default, the filter capacitors are uninstalled and the filter resistors are populated with 0 ohms. Use NP0/C0G type capacitors and low-tolerance resistors to maintain AC performance when choosing to populate these footprints with a low-pass filter circuit.

Additionally, the ADC negative input connectors (for example, AIN3M) have the option to be shorted to GND with a jumper to allow for single-ended input signals. The input connections are shown in Figure 2-3.

ADS9212EVM Input SMA ConnectionsFigure 2-3 Input SMA Connections