Integrated circuits with frequency generating circuits
US8519696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Feb 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/23
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated circuit comprises at least first and second frequency generating circuits, wherein each frequency generating circuit comprises a reference frequency source; a voltage controlled oscillator; and a feedback control circuit for controlling the voltage controlled oscillator to provide a desired output frequency signal. The output of the voltage controlled oscillator of the first frequency generating circuit is switched into the feedback control circuit of the second frequency generating circuit to provide a test signal for testing one or more components of the feedback control circuit of the second frequency generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.