250-MHz, quad-channel, differential output transimpedance amplifier evaluation module


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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.

  • Configured for single-ended voltage input and output with 50-Ω matched SMA connections
  • Optional DC-coupled differential output configuration
  • Jumpers included for easy control of channel mode, bias current cancellation, and whole chip power-down
  • Designed for single 3.3-V supply operation
  • Layout optimized for high bandwidth devices
Transimpedance amplifiers
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Evaluation board

LMH32404RHFEVM — 250-MHz, quad-channel, differential output transimpedance amplifier evaluation module

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Technical documentation

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Type Title Date
* EVM User's guide LMH32404RHFEVM User's Guide PDF | HTML 08 Dec 2020
Certificate LMH32404RHFEVM EU RoHS Declaration of Conformity (DoC) 13 Nov 2020

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