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F1977

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

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

The F1977 digital step attenuator featuring Glitch-Free™ technology improves system reliability and settling time. It has an attenuation range of 31.75dB with excellent accuracy and very low distortion and insertion loss.

  • CATV infrastructure
  • CATV set-top boxes
  • CATV satellite modems
  • Data network equipment
  • Fiber networks

Product Documents

Product Brief

2025-08-25

Digital Step Attenuators

pdf | 1.07 MB
Guide

2025-08-25

RF Products Evaluation System (EVS) Digital Control Software

pdf | 2.83 MB
Software & Tools - Software

2025-08-25

RF Digital Control Software Installer

zip | 169.81 MB
Application Brief

2025-08-25

IDT Products for Wired Broadband Applications

pdf | 686.5 KB
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F1977NBGI

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F1977NBGI8

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F1977EVBI

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F1977EVS

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