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.
Most importantly,...

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