The IDT F1950 Digital-Step-Attenuator featuring Glitch-Free™ technology improves system reliability and settling time.  It has an attenuation range of 31.75 dB with excellent accuracy and very low distortion.


  • Glitch-Free™, < 0.6 dB transient overshoot
  • 150 MHz to 5000 MHz frequency range
  • Spurious Free Design
  • 3V to 5V supply
  • Attenuation Error < 0.3 dB @ 2 GHz
  • Low Insertion Loss < 1.3 dB @ 2 GHz
  • Excellent Linearity +65 dBm IP3I
  • Fast settling time, < 400 nsec
  • Class 2 JEDEC ESD (> 2kV HBM)
  • Serial & Parallel Interface 31.75 dB Range
  • 4x4 mm Thin VFQPFN 24 pin package

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Function Carrier Type Buy Sample
Active VFQFPN 24 I Yes 7-bit DSA Tray
Active VFQFPN 24 I Yes 7-bit DSA Reel

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
F1950 Datasheet Datasheet PDF 2.15 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 3.64 MB
Application Notes & White Papers
AT0069 - F1950 Intermodulation Product at 3.5 GHz Application Note PDF 294 KB
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 3.17 MB
PCN# : A1402-04 Add Alternate Assembly & Test Product Change Notice PDF 45 KB
F1950 S-Parameters Model - S-Parameter ZIP 2.17 MB
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
Digital Step Attenuators 日本語, 简体中文 Product Brief PDF 1.07 MB

Boards & Kits

Part Number Title Type Company
F1950EVBI Evaluation Board for F1950 7-bit Digital Step Attenuator Evaluation Renesas