SBAU447 May   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Coupon Locations and Descriptions
    2. 2.2 EVM Assembly Instructions
    3. 2.3 Interfaces
      1. 2.3.1 Analog Input
      2. 2.3.2 Amplifier Output
        1. 2.3.2.1 Differential Output
        2. 2.3.2.2 Single-Ended Output, Fixed Gain
        3. 2.3.2.3 Single-Ended Output, Ratiometric Gain
      3. 2.3.3 Modulator Output
        1. 2.3.3.1 Internal Clock
        2. 2.3.3.2 External Clock
    4. 2.4 Power Supplies
      1. 2.4.1 VDD1/AVDD Input
      2. 2.4.2 VDD2/DVDD Input
    5. 2.5 EVM Operation
      1. 2.5.1 Analog Input and VDD1/AVDD Power
      2. 2.5.2 Outputs and VDD2/DVDD Power
      3. 2.5.3 Test Procedure
        1. 2.5.3.1 Equipment Setup
        2. 2.5.3.2 Procedure
  9. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation

2.5.1 Analog Input and VDD1/AVDD Power

The analog supply voltage can be applied directly to pin 4 with respect to pin 1 of the input connection header. The analog input can be applied to pin 3 with respect to pin 2. External connection of the negative input pin, AINN, to GND1/AGND is often necessary to make sure the input voltage remains within the common-mode input voltage range.

Table 3-2 lists the details of an input connection.

CAUTION: Carefully review the selected device data sheet for limitations of the analog input range and make sure the appropriate analog and digital voltages are applied prior to connecting any analog input to the EVM. The board is not certified for high-voltage operation
Table 2-2 Analog Input
Pin Number Signal Description
4 VDD1/AVDD Connection to the installed VDD1/AVDD of the device.
3 AINP Analog positive input to the installed device.
2 AINN Analog negative input to the installed device.
1 GND1/AGND Connection to the installed GND1/AGND terminal of the device.