Charge pump circuit
US7382849B1 · kind B1 · utility
19Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2003 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jul 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0896
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Charge pump circuit. A charge pump circuit is provided for use in a phase-lock loop circuit. The charge pump circuit comprises a charge pump core circuit that outputs a control voltage. The charge pump circuit also comprises a replica circuit that is coupled to the charge pump core circuit, wherein the replica circuit receives the control voltage and produces one or more bias signals that are coupled to the charge pump core circuit to minimize the difference between charge up and charge down currents generated by the charge pump core circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.