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F1977 Block Diagram
F1977 Pinout

F1977

7-bit 0.25 dB, 75Ω, Glitch-Free™ Digital Step Attenuator

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 Specification

Frequency Range (MHz)Supply Voltage (V)Pkg. TypeLead Count (#)Input IP3 (dBm)Gain (dB)Gain Resolution (dB)Function
5.00 - 3000.003.00 - 5.25VFQFPN3264-1.400.257-bit DSA

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
F1977NBGIActiveNBG32P2VFQFPN32IYesTrayCheck Availability
F1977NBGI8ActiveNBG32P2VFQFPN32IYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
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F1977 Datasheet REV1 Datasheet PDF 5.37 MB Apr 21, 2016
Apps Notes & White Papers
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AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB Aug 31, 2015
Other
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RF Digital Step Attenuators Product Overview 简体中文, 日本語 Overview PDF 819 KB Mar 2, 2016
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IDT Products for Radio Applications 日本語 Product Brief PDF 4.65 MB Aug 12, 2015

Software & Tools

Title Type Format File Size Datesort icon
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RF Digital Control Software Installer Software Tool ZIP 169.81 MB Aug 31, 2015

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