The F1455 is a High-Gain / High-Linearity 1400MHz to 2300MHz TX Variable Gain Amplifier used in transmitter applications. The F1455 TX VGA provides 32dB maximum gain with +39dBm OIP3 and 4dB 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 216mA of ICC. This device is packaged in a 6 x 6 mm, 28-QFN with 50Ω single-ended RF input and RF output impedances for ease of integration into the signal path.


  • Broadband 1400MHz to 2300MHz
  • 32dB max gain
  • 4dB NF at max gain (2000MHz)
  • KLIN™ amplifier with 6dB gain range
  • DSA: 23.5dB range
  • 29.5dB total gain control range, 0.5dB step
  • < 2 dB overshoot between major gain transitions such as 15.5dB to 16dB atten
  • +40dBm OIP3
  • Maintains +23.5dBm output P1dB over first 6dB gain adjustment range
  • SPI interface for DSA control
  • Single 5V supply voltage
  • ICC = 216mA
  • Up to +105°C TCASE operating temperature
  • 50Ω input and output impedance
  • Standby for power savings
  • Pin compatible 700MHz and 2700MHz versions
  • 6 x 6 mm, 28-QFN package

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 28 K Yes Tray
Active VFQFPN 28 K Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1455 Datasheet REV1 Datasheet PDF 4.75 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 3.64 MB
Application Notes & White Papers
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
IBIS model for F1455 Model - IBIS ZIP 0 KB
F1455 S-Parameters Model - S-Parameter ZIP 1.27 MB
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
RF Family of Products 日本語, 简体中文 Overview PDF 1.15 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Boards & Kits

Part Number Title Type Company
F1455EVBK Evaluation Board for F1455 TX VGA Renesas