SBOU253 December   2020 LMH32404 , LMH32404-Q1

 

  1. 1Trademarks
  2. 2Introduction
    1. 2.1 Features
    2. 2.2 EVM Specifications
  3. 3Power Connections
  4. 4Input and Output Connections
    1. 4.1 Channel Multiplexer Mode Control
    2. 4.2 Input DC Current Cancellation
    3. 4.3 Enable Function
    4. 4.4 Optional VOCM Pin Connection
    5. 4.5 Option VOD Connection
  5. 5Board Layout
  6. 6Schematic and Bill of Materials
    1. 6.1 Bill of Materials
      1.      Related Documentation

2 Introduction

The LMH32404RHFEVM is an evaluation module (EVM) for the LMH32404RHF differential output transimpedance amplifier. The EVM features a transformer to convert the output to a 50-Ω single-ended connection for easy measurement with standard test equipment, and the option to convert to fully-differential DC-coupled signals. The input is 50-Ω matched and configured by default to receive a voltage input that is converted to a current through a 2-kΩ resistor, but can be reconfigured to receive a true current input with optional photodiode bias connections on the back of the board. The EVM also includes easy-to-use jumpers to control the device gain, input bias current cancellation, and shutdown functions.