Phase locked loop and method for controlling the same
US7696831B2 · kind B2 · utility
3Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | May 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0898
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Phase locked loop and method for controlling the same includes a phase/frequency detector configured to detect a phase difference between an input clock and a feedback clock to generate an up signal or a down signal depending on the detected phase difference, a charge pump configured to variably control a bandwidth according to a bandwidth control signal input thereinto, the charge pump operating in response to the up signal or the down signal and a voltage controlled oscillator configured to change a frequency according to an output of the charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.