The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 29, 2008

Filed:

Dec. 29, 2003
Applicants:

Swee-ann Teo, Sunnyvale, CA (US);

Lawrence Tse, Fremont, CA (US);

Inventors:

Swee-Ann Teo, Sunnyvale, CA (US);

Lawrence Tse, Fremont, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A charge pump includes first and second pairs of differential transistors. Each transistor includes control, first, and second terminals. First and second charge pump drivers communicate with the control terminal of one of the first pair of differential transistors and one of the second pair of differential transistors, respectively. Third and fourth charge pump drivers communicate with the control terminal of the other of the first pair of differential transistors and the other of the second pair of differential transistors, respectively. The first through fourth charge pump drivers include respective pairs of differential transistors that receive control signals from respective control circuits.


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