The F2255EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F2255 Voltage Variable Attenuator. Attenuation slope may be set to either positive or negative attenuation slope using the on-board jumper pins. 


  • SMA connectors for RF ports RF1, RF2, Power supply Vdd (Supply Voltage) and Vctrl (Control Voltage).
  • Jumper Connector J2 allows user to select either positive of negative attenuation slope by setting the Vmode pin to either Ground or VHI


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star F2255 Datasheet データシート PDF 2.03 MB