US Patent 7920009 Method and device for comparator offset cancellation

Patent 7920009 was granted and assigned to Analog Devices on April, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Analog Devices

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

79200090

Patent Inventor Names

Stephen Robert Kosic0

Eric John Siragusa0

Date of Patent

April 5, 2011

Patent Application Number

123979340

Date Filed

March 4, 2009

Patent Primary Examiner

‌

Quan Tra

Patent abstract

A method and a device for canceling an offset voltage in an output of a comparator circuit include sampling a set of offset voltages; applying a set of correction voltages equal in magnitude and opposite in polarity to the set of offset voltages, the set of correction voltages being applied to an output generating arrangement of the comparator circuit; and enabling output of the output generating arrangement after the set of correction voltages is applied.