WIDEBAND_VARIABLE_GAIN

Published:2009/6/25 21:14:00 Author:Jessie | From:SeekIC

FET selves as ourPur gain-controlled device in feedback loop of Optical Electronics 9906 opamp. Resistive T network has SD201 MOS transistor as ground leg, with resistor values dlosen so transistor is electrically dose to summing junction, automatically limiting total signal voltage. Resulting arrangement of voltage-controlled feedback and compensation gives variable-gain amplifier whh good linearity and constant wideband width for all gain Ievels.- Wideband Variable Gain Amplifier, Optical Electronics, Tucson, AZ, Application Tip 10277.



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