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:
Mar. 17, 2009
Filed:
Nov. 30, 2006
Armando J. Gonzalez, Miami, FL (US);
Joseph A. Charaska, Melrose Park, IL (US);
Vadim Dubov, Boca Raton, FL (US);
William J. Martin, Fort Lauderdale, FL (US);
Armando J. Gonzalez, Miami, FL (US);
Joseph A. Charaska, Melrose Park, IL (US);
Vadim Dubov, Boca Raton, FL (US);
William J. Martin, Fort Lauderdale, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A system and method for reducing the transient responses in a phase lock loop (PLL) () with variable oscillator gain is disclosed. The system includes a charge pump () having an adapt mode and a normal mode of operation. The charge pump () also includes controlled trickle currents from current sources (), () which are applied to the output (), () of charge pump () to minimize the transient responses of the PLL (). A programmable delay is provided in the charge pump () and is configured using a controller () based on the variable oscillator gain for the PLL (). The configured programmable delay is used in the adapt mode of operation for adding a trickle current from the current source () to the adapt mode output ().