Evaluation Board for F1951 6-bit Digital Step Attenuator

The F1951EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1951 digital step attenuator. Attenuation may be set using either the F1951’s parallel control input or its serial control input. A dip switch on the evaluation board allows one to set the attenuation state without off-board connections to the control inputs.

The F1951EVS is a complete hardware and software solution that allows customers to digitally control the F1951EVBI with the USB output on a computer.  The kit includes the F1951EVBI board, as well as a USB Digital Control Board and interface cables. The software, guides , and instructional videos are available for download/viewing on this page.


  • F1951EVBI (Evaluation Board)
    • SMA connectors for RF input and RF output
    • Power supply connected either through SMA connector or header pins
    • Attenuator settable with DIP switch, serial port interface (SPI) or parallel control interface
  • F1951EVS (Evaluation Solution)
    • Includes product evaluation board described above
    • Includes Digital Control Board and all necessary cables
    • Interfaces with the Digital Control Software – can be downloaded from this page

Product Options

Orderable Part ID Part Status Buy Sample
F1951EVBI Active Availability
F1951EVS Active Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1951 Datasheet Datasheet PDF 1.90 MB May 10, 2018
Application Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB Aug 30, 2015

Software & Tools

Title Other Languages Type Format File Size Date
RF Digital Control Software Installer Software Tool ZIP 169.81 MB Aug 30, 2015