The F1421 is a high gain / high linearity RF amplifier used in high performance RF applications. The F1421 provides 20.3dB gain with +40dBm OIP3 and 5.5dB noise figure at 1900MHz. This device uses a single 5V supply and 138mA of ICC. This device is packaged in a 4 x 4 mm, 24-QFN with 50Ω RF input and RF output impedances for ease of integration into the signal-path.


  • Broadband 1700MHz to 2.2GHz  
  • 20.3dB typical gain at 1900MHz 
  • 5.5dB noise figure at 1900MHz
  • +40dBm OIP3 at 1900MHz 
  • +23dBm output P1dB at 1900MHz
  • Single 5V supply voltage 
  • ICC = 138mA
  • -40°C to +105°C operating temperature 
  • 50Ω single-ended input/output impedances 
  • Standby mode for power savings
  • 4 × 4 mm 24-QFN package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
F1421NLGK Active NLG24P1 VFQFPN 24 K Yes Tray
F1421NLGK8 Active NLG24P1 VFQFPN 24 K Yes Reel

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1421 Datasheet Datasheet PDF 2.20 MB
PCN#: TB1901-01 Add Alternate Test Location on Select Devices Product Change Notice PDF 24.55 MB
RF Amplifiers with Zero-Distortion? Technology Overview PDF 1.10 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Evaluation Boards

Part Number Title Sort ascending
F1421EVB Evaluation Board for F1421 RF Amplifier 1700MHz to 2.2GHz