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. 04, 2005
Filed:
Sep. 15, 2003
Hiep the Pham, Campbell, CA (US);
Hiep The Pham, Campbell, CA (US);
Silicon Bridge, Inc., Fremont, CA (US);
Abstract
A phase-locked loop (PLL) circuit includes a voltage-controlled oscillator (VCO) having a first input to receive a control voltage, one or more second inputs to receive one or more tuning range control signals, and an output to provide an oscillation output signal, a phase detector having inputs to receive the oscillation output signal and a reference signal, a charge pump having an input coupled to the output of the phase detector and having an output to generate the control voltage, a loop filter having an input to receive the control voltage and having a control terminal, and a controller having inputs to receive the control voltage, a high reference voltage, a low reference voltage, and one or more mode signals, and having a first output connected to the control terminal of the loop filter and second outputs to generate the tuning range signals.