US Patent 7202717 Chopped charge pump

Patent 7202717 was granted and assigned to Analog Devices on April, 2007 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Analog Devices

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7202717

Patent Inventor Names

William Hunt0

Michael F. Keaveney0

Date of Patent

April 10, 2007

Patent Application Number

10874720

Date Filed

June 23, 2004

Patent Primary Examiner

‌

Timothy P. Callahan

Patent abstract

A chopped charge pump with matching up and down pulses including a first pair of current sources, a second pair of current sources, and a switching circuit for switching on in a first phase one current source of each pair to provide up current pulses, and the other current source of each pair to provide down current pulses, and switching on in a second phase the other current source of each pair to provide up current pulses, and the one current source of each pair to provide down current pulses to offset error in the current response of the pairs of current sources.