Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 6, 2009
Patent Application Number
11778645
Date Filed
July 16, 2007
Patent Primary Examiner
Patent abstract
An operational amplifier is disclosed. The operational amplifier comprises an input stage and a loading stage. The input stage receives a differential input signal pair corresponding to a first frequency band. The loading stage is coupled to the input stage. The loading stage outputs an amplified differential output at output nodes. The loading stage comprises a flicker noise source and a modulating device. The modulating device is coupled to the flicker noise source. The modulating device modulates flicker noises into a second frequency band. The modulating device is not within a signal path.
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