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:
Nov. 18, 2008
Filed:
Sep. 12, 2007
Applicant:
Charles J. Masenas, Essex Junction, VT (US);
Inventor:
Charles J. Masenas, Essex Junction, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A delay locked loop (DLL) having a charge pump gain independent of the operating frequency of the DLL. A method for providing a constant gain for a charge pump component of a delay locked loop (DLL) is disclosed, and includes: providing a switched capacitor stage responsive to a charge phase for charging a capacitor and a dump phase for dumping the capacitor; and aligning the charge phase and the dump phase such that a control voltage provided by the charge pump is independent of a frequency of a DLL charge and discharge phase.