The F0473B is an integrated dual-path RF front-end consisting of an RF switch and two gain stages with 6dB gain control used in the analog front-end receiver of an Active Antenna System (AAS). Supporting frequencies from 3.3GHz to 4.2GHz, the F0473B provides 35dB gain with +15dBm OP1dB, and 1.3dB noise figure (NF). Gain is reduced 6dB in a single step with a maximum settling time of 35ns.

The device uses a single 3.3V supply and 130mA of IDD. Offered in a 5 × 5 mm, 32-pin QFN package with 50Ω input and output amplifier impedances, the F0473B integrates into the signal path with the greatest of ease.


  • Gain
    • 35dB typical in High Gain Mode
    • 29dB typical in Low Gain Mode
  • 1.3dB typical NF
  • OP1dB 
    • +15dBm typical in High Gain Mode 
    • +14dBm typical in Low Gain Mode
  • 50Ω single-ended input / output amplifier impedances
  • IDD = 130mA 
  • Independent Standby Mode for power savings
  • Supply voltage: +3.15V to +3.45V
  • 5 × 5 mm, 32-pin package
  • -40°C to +105°C exposed pad operating temperature range

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Carrier Type Buy Sample
Preview VFQFPN 32 I Tray
Preview VFQFPN 32 I Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
F0473B Advance Datasheet Datasheet PDF 402 KB
User Guides & Manuals
RF Product Selection Guide Guide PDF 1.18 MB
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Boards & Kits

Part Number Title Type Company
F0473B Eval Board Evaluation Board for F0473B Dual Path RF Switch with LNA and DVGA Evaluation