The 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

tuneProduct 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


Title language Type Format File Size Date
Datasheets & Errata
star F1950 Datasheet Datasheet PDF 2.15 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 1015 KB
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
Digital Step Attenuators 日本語, 简体中文 Product Brief PDF 1.07 MB


Title language Type Format File Size Date
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
F1950 S-Parameters Model - S-Parameter ZIP 2.17 MB

memoryBoards & Kits

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