Power supply circuit for a phase-locked loop
US7728688B2 · kind B2 · utility
6Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Nov 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/555
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power supply circuit includes a first voltage regulator to generate a first supply voltage for a first circuit of a phase-locked loop and a second voltage regulator to generate a second supply voltage for a second circuit of the phase-locked loop. The first and second supply voltages are independently generated by the first and second voltage regulators based on the same reference signal. The first circuit may be a charge pump and the second circuit may be a voltage-controlled oscillator. Different circuits may be supplied with the independently generated supply voltages in alternative embodiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.