Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hengsheng Liu0
Date of Patent
June 16, 2009
0Patent Application Number
115241970
Date Filed
September 21, 2006
0Patent Primary Examiner
Patent abstract
An operational amplifier circuit includes an input differential circuit and a trim circuit for sensing the operational amplifier's input common mode voltage and generating an offset correction voltage in response thereto. The trim circuit reduces the amplifier's offset voltage dependence on input common mode voltage, and hence improves the common mode rejection ratio of the operational amplifier circuit.
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