A commutating auto zero amplifier

A commutating auto zero amplifier system, comprises a first amplifier (A1 ), a second amplifier (A2) and a switching arrangement which defines a two phase operation, with one amplifier in an output mode providing the output and the other amplifier in a zeroing mode during each phase. A capacitor arr...

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Bibliographic Details
Main Author STEELE ANDREW
Format Patent
LanguageChinese
English
Published 09.09.2009
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:A commutating auto zero amplifier system, comprises a first amplifier (A1 ), a second amplifier (A2) and a switching arrangement which defines a two phase operation, with one amplifier in an output mode providing the output and the other amplifier in a zeroing mode during each phase. A capacitor arrangement (Cof1. Cot1 ) stores offset voltages, a buffer amplifier (B) couples the output from the amplifier in the output mode to an input of the amplifier in the zeroing mode. This eliminates voltage swings at the output of an amplifier as it switches between modes of operation.
Bibliography:Application Number: CN2007839849