The IDT F1977 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 and insertion loss.

Features

  • 5 MHz to 3000 MHz frequency range
  • Glitch-Free™ low transient overshoot
  • Low insertion loss < 1.4 dB @ 1 GHz
  • Excellent linearity +64 dBm IIP3
  • Attenuation step error 0.1 dB @ 1 GHz
  • Serial & Parallel interface 31.75 dB range
  • Low Spurious design
  • 3 V / 5 V supply, 1.8 V / 3.3 V control logic
  • Fast settling time
  • Class 1C JEDEC ESD (1.5 kV HBM)
  • 5x5 mm 32-VFQFPN package

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
F1977NBGI Active VFQFPN 32 I Yes Tray Package Info
Availability
F1977NBGI8 Active VFQFPN 32 I Yes Reel Package Info
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1977 Datasheet REV1 Datasheet PDF 10.67 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 1.18 MB
Application Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 3.17 MB
Downloads
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
Other
Digital Step Attenuators 日本語, 简体中文 Product Brief PDF 1.07 MB
IDT Products for Wired Broadband Applications Application Briefs PDF 686 KB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Boards & Kits

Part Number Title Type Company
F1977EVBI Evaluation Board for F1977, 7-bit, 75Ω, Digital Step Attenuator