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FOD2742A

Fairchild Semiconductor
Part Number FOD2742A
Manufacturer Fairchild Semiconductor
Description OPTICALLY ISOLATED ERROR AMPLIFIER
Published Apr 1, 2005
Detailed Description OPTICALLY ISOLATED ERROR AMPLIFIER FOD2742A DESCRIPTION The FOD2742 Optically Isolated Amplifier consists of the popular ...
Datasheet PDF File FOD2742A PDF File

FOD2742A
FOD2742A

Overview
OPTICALLY ISOLATED ERROR AMPLIFIER FOD2742A DESCRIPTION The FOD2742 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler.
The optocoupler is a gallium arsenide (GaAs) light emitting diode optically coupled to a silicon phototransistor.
It comes in 3 grades of reference voltage tolerance = 2%, 1%, and 0.
5%.
The Current Transfer Ratio (CTR) ranges from 100% to 200%.
It also has an outstanding temperature coefficient of 50 ppm/°C.
It is primarily intended for use as the error amplifier/ reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc converters.
FUNCTIONAL BLOCK DIAGRAM FOD2742B FOD2742C When us...


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