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:
May. 13, 2008
Filed:
Apr. 25, 2006
Kailashnath Nagarakanti, Santa Clara, CA (US);
Kiritkumar Panchal, Sunnyvale, CA (US);
Sung-hun OH, Sunnyvale, CA (US);
Kailashnath Nagarakanti, Santa Clara, CA (US);
Kiritkumar Panchal, Sunnyvale, CA (US);
Sung-Hun Oh, Sunnyvale, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A clock circuit. The clock circuit includes a phase detector and an output unit. The phase detector is coupled to receive a reference clock signal and an output clock signal, and is configured to provide a phase signal indicative of a phase difference between the reference and output clock signals. The output unit is configured to provide the output clock signal, and is coupled to a first supply voltage node and a second supply voltage node. The output unit includes a biasing circuit and a voltage-controlled element. The biasing circuit is coupled to receive a control voltage based on the phase signal and is configured to generate a bias voltage based on the received control voltage. The voltage-controlled element is configured to adjust a parameter of the output clock signal based on the bias voltage. A supply-independent output clock is attained using this configuration.