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:
Oct. 15, 2002
Filed:
Nov. 21, 2000
Applicant:
Inventors:
Dmitriy Rozenblit, Irvine, CA (US);
William J. Domino, Yorba Linda, CA (US);
Darioush Agahi, Irvine, CA (US);
Assignee:
Conexant Systems, Inc., Newport Beach, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 ;
U.S. Cl.
CPC ...
H03L 7/06 ;
Abstract
This invention provides a charge pump biasing circuit that varies the bias when the phase lock loop changes frequency to improve the settling time of the phase lock loop. During a frequency change, the charge pump output current taper off as the phase lock loop approaches the desired frequency. The charge pump biasing circuit allows the phase lock loop to change frequencies faster and minimizes spurious sideband noise once the loop has settled.