Charge pump circuit, phase locked loop apparatus, integrated circuit, and method of manufacture of a charge pump
US9628093B2 · kind B2 · utility
3Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2013 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jul 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A charge pump circuit comprises a first bipolar transistor device and a second bipolar switching device arranged in a differential pair configuration. A first terminal of each of the first and second bipolar switching devices are coupled to a supply. A second like terminal of each of the first and second bipolar switching devices are coupled together and to ground potential via a pulsed current source. A field effect switching device is also provided and the first terminal of the first bipolar switching device is coupled to the voltage supply via the field effect switching device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.