The F1451 is a High-Gain/High-Linearity 450MHz to 1100MHz TX Variable Gain Amplifier used in transmitter applications. The F1451 TX VGA provides 32dB maximum gain with +41dBm OIP3 and 3.6dB noise figure. Up to 29.5dB gain control is achieved using the combination of a digital step attenuator (DSA) plus KLIN™ RF variable gain amplifier gain adjustment. This device uses a single 5V supply and 185mA of ICC. This device is packaged in a 6 × 6 mm, 28-QFN with 50Ω single-ended RF input and RF output impedances for ease of integration into the signal path.


  • Broadband 450MHz to 1100MHz
  • 32dB max gain
  • 3.6dB NF at max gain (900MHz)
  • 29.5dB total gain control range, 0.5dB step
  • < 2dB overshoot between major gain transitions 
  • +41dBm OIP3
  • Maintains +23dBm output P1dB over 13dB gain adjustment range
  • SPI interface for DSA control
  • Single 5V supply voltage
  • ICC = 185mA
  • Up to +105°C TCASE operating temperature
  • 50Ω input and output impedance
  • Standby for power savings
  • Pin compatible 1400–2300 MHz and 2100–2950 MHz versions
  • 6 × 6 mm, 28-QFN package

Product Options

下单器件 ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 封装 Buy Sample
F1451NKGK Active VFQFPN 28 K 是的 Tray Package Info
F1451NKGK8 Active VFQFPN 28 K 是的 Reel Package Info

Documentation & Downloads

文档标题 他の言語 Type 文档格式 文件大小
F1451 Datasheet Datasheet PDF 8.90 MB
RF Product Selection Guide Guide PDF 2.72 MB
应用指南 &白皮书
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 3.17 MB
PCN#A1709-04 Alternate Assembly Location at ASECL on Select Package Product Change Notice PDF 32 KB
F1451 IBIS Model Model - IBIS ZIP 0 KB
F1451 S-Parameters Model - S-Parameter ZIP 1.26 MB
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
RF Family of Products ( 简体中文) English, 日本語 Overview PDF 1.15 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Boards & Kits

Part Number 文档标题 Type 公司
F1451EVSK Evaluation Kit for F1451 TX VGA