The F2955 is a high reliability, low insertion loss, 50Ω SP5T absorptive RF switch designed for a multitude of RF applications, including wireless communications. This device covers a broad frequency range from 50MHz to 8000MHz. In addition to providing low insertion loss, the F2955 also delivers excellent linearity and isolation performance while providing a 50Ω termination to the unused RF input ports. The F2955 also includes a patent-pending constant impedance (K|z|™) feature. K|z| improves system hot switching ruggedness, minimizes LO pulling in VCOs, and reduces phase and amplitude variations in distribution networks. It is also ideal for dynamic switching/selection between two or more amplifiers while avoiding damage to upstream/downstream sensitive devices, such as power amplifiers (PAs) and analog-to-digital converters (ADCs).

The F2955 uses a single positive supply voltage supporting three logic control pins using either 3.3V or 1.8V control logic. Connecting a negative voltage to pin 20 disables the internal negative voltage generator and becomes the negative supply.


  • Five symmetric, absorptive RF ports
  • High isolation: 49dB at 4000MHz
  • Low insertion loss: 1.1dB at 4000MHz
  • High linearity:
    • IIP2 of 114dBm at 2000MHz
    • IIP3 of 60.5dBm at 4000MHz
  • High operating power handling:
    • 33dBm CW on selected RF port
    • 27dBm on terminated ports
  • Single 2.7V to 5.5V supply voltage
  • External negative supply option
  • 3.3V and 1.8V compatible control logic
  • Operating temperature: -40°C to +105°C
  • 4 × 4 mm 24-VFQFPN package
  • Pin compatible with competitors

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Carrier Type Buy Sample
Active VFQFPN 24 K Tray
Active VFQFPN 24 K Reel

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
F2955 Datasheet Datasheet PDF 1.64 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 3.64 MB
PCN# : 210003 Add Alternate Fab Location on Select RFD Devices Product Change Notice PDF 768 KB
RF Switches Family 日本語, 简体中文 Product Brief PDF 438 KB
IDT Products for Wired Broadband Applications Application Briefs PDF 686 KB

Boards & Kits

Part Number Title Type Company
F2955EVB Evaluation board for the F2955 High Reliability SP5T RF Switch Evaluation Renesas