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.
Patent No.:
Date of Patent:
Aug. 12, 2014
Filed:
May. 06, 2013
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventor:
Emmanouil Terrovitis, Foster City, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A charge pump circuit is disclosed that includes a main charge pump, a replica charge pump, and an op-amp. The main charge pump includes up and down input terminals to receive UP and DN control signals, a control terminal to receive a calibration signal, and an output to generate a control voltage. The replica charge pump includes up and down input terminals to receive DN and UP control signals, a control terminal to receive the calibration signal, and an output to generate a replica voltage. The op-amp generates the calibration signal in response to the control voltage and the replica voltage.