Phase-lock loop control circuitry
US4450410A · kind A · utility
6Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Mar 3, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/089
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuitry for controlling a phase-lock loop using a charge-pump phase detector is shown to comprise a phase detector network in combination with an operational amplifier connected to selected output signals from such network to produce a bipolar D.C. signal indicative of the phase difference between signals applied to such network, one of the signals being at a frequency half that of the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.