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.

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Patent Inventor Names

Michael F. Keaveney0

William Hunt0

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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.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=07202717

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