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:
Feb. 21, 2017
Filed:
Feb. 21, 2014
Applicant:
Microchip Technology Incorporated, Chandler, AZ (US);
Inventors:
Fredrik Buch, Santa Clara, CA (US);
Cristian Albina, Chandler, AZ (US);
Yong Yuenyongsgool, Gilbert, AZ (US);
Assignee:
MICROCHIP TECHNOLOGY INCORPORATED, Chandler, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/087 (2006.01); H03L 7/095 (2006.01); H03K 5/26 (2006.01); H03L 7/097 (2006.01); H03L 7/089 (2006.01);
U.S. Cl.
CPC ...
H03L 7/087 (2013.01); H03K 5/26 (2013.01); H03L 7/089 (2013.01); H03L 7/095 (2013.01); H03L 7/097 (2013.01);
Abstract
A lock-on detection circuit for a phase-locked loop includes circuitry configured to receive first up and down outputs and second up and down outputs from one or more phase detectors and to determine from the first up and down outputs and the second up and down outputs how well the phase-locked loop is locked on to a reference clock.