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F1977 - Digital Step Attenuator

Description

This document describes the specification for the F1977 Digital Step Attenuator.

The F1977 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of CATV and Satellite systems.

Features

  • Serial & 7 bit Parallel Interface.
  • 31.75 dB Control Range.
  • 0.25 dB step.
  • Glitch-FreeTM for low transient overshoot.
  • Low Insertion Loss: 1.4 dB @ 1 GHz.
  • Ultra linear IIP3: +64 dBm.
  • Attenuation Error: -0.1 dB @ 1 GHz.
  • Stable Attenuator Accuracy over temperature.
  • Bi-directional RF use.
  • 3.00 V to 5.25 V supply.
  • 1.8 V or 3.3 V control logic.
  • Low Current Consumption: 325 µA typical.
  • -4.

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Datasheet Details

Part number F1977
Manufacturer IDT
File Size 5.36 MB
Description Digital Step Attenuator
Datasheet download datasheet F1977 Datasheet
Additional preview pages of the F1977 datasheet.

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Full PDF Text Transcription

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7-Bit, 75 Ω, Digital Step Attenuator GENERAL DESCRIPTION This document describes the specification for the F1977 Digital Step Attenuator. The F1977 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of CATV and Satellite systems. These devices are offered in a compact 5 mm x 5 mm 32 pin QFN package with 75 Ω impedances for ease of integration. COMPETITIVE ADVANTAGE Digital step attenuators are used in Receivers and Transmitters to provide gain control. The F1977 is a 7-bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss, low distortion (+64 dBm IIP3) and pinpoint attenuation accuracy.
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