Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent TC721 Attenuator_ Attenuation Control - Technical Overview 5991-3555EN c20141014 [7]

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Keysight Technologies
TC721 Attenuator:
Attenuation Control




        Technical Overview
Introduction

     The TC721 is a voltage variable attenuator that operates from DC to 50 GHz. This application note
     highlights the advantages of the TC721 topology versus those of more traditional attenuators and
     explains the function of the DC reference circuit located on the TC721 chip. An example of a driver
     circuit for the attenuator is presented. Advantages and disadvantages of the given driver circuit are
     also discussed.


     2.0 Topology
     A schematic drawing of the TC721 attenuator is shown in Figure 1. Traditional GaAs FET attenuators
     are based upon the standard resistive T

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