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. 13, 2007
Filed:
Aug. 26, 2004
Franklin Manuel Baez, Ithaca, NY (US);
David William Boerstler, Round Rock, TX (US);
Eskinder Hailu, Austin, TX (US);
Kazuhiko Miki, Round Rock, TX (US);
Franklin Manuel Baez, Ithaca, NY (US);
David William Boerstler, Round Rock, TX (US);
Eskinder Hailu, Austin, TX (US);
Kazuhiko Miki, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides for compensation of leakage charge in a PLL. A first plurality and second plurality of charge pumps has a source charge pump and a sink charge pump, and each charge pump has its own switch. A first node is coupled between at least one source charge pump and at least one sink charge pump. A second node coupled between at least one source charge pump and at least one sink charge pump. A PLL filter is coupled to the first node. A dummy filter is coupled to the second node. A first input of a differential mode sensor is coupled to the PLL filter. A second input of a differential mode sensor is coupled to the dummy filter. A first input of a common mode sensor is coupled to the dummy filter. A second input of a common mode sensor coupled to the PLL filter.