SLVUDU6 April   2026

 

  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 Interfaces
      1. 2.1.1 Analog Input
      2. 2.1.2 EVM Output Configurations and Descriptions
      3. 2.1.3 Amplifier Output
        1. 2.1.3.1 Differential Output (Diff.)
        2. 2.1.3.2 Fixed Gain Single-Ended Output With Internal Reference (SE Int)
        3. 2.1.3.3 Fixed Gain Ratiometric Output With VDD Reference (R Int)
        4. 2.1.3.4 Single-ended and Ratiometric Output With External Reference (SE/R Ext)
      4. 2.1.4 Modulator Output
        1. 2.1.4.1 Internal Clock Modulator (Mod. Int.)
        2. 2.1.4.2 External Clock Modulator (Mod. Ext.)
    2. 2.2 VDD Power Supply
    3. 2.3 EVM Operation
      1. 2.3.1 Analog Input
      2. 2.3.2 Outputs and VDD Power
      3. 2.3.3 Test Procedure
        1. 2.3.3.1 Equipment Setup
        2. 2.3.3.2 Procedure
  9. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation

2.1.3.4 Single-ended and Ratiometric Output With External Reference (SE/R Ext)

When R_R is not populated and R_S is populated with an external decoupling capacitor, REFIN is accessible from J3.2 and the ExtRef test point. The ratiometric output gain is set by the applied ExtRef voltage. The passive components of R9 and C11 are populated as a low-pass filter to attenuate high frequency noise components.

VDD and GND are accessible through the J2 terminal block. C7, C8 and C10 serve as decoupling capacitors for VDD and help keep the supply stable.

Using an oscilloscope, the user can observe the differential output signal on J3.3 (OUTP) with respect to J2.3 (GND).