Resonator and amplifying oscillator circuit having a high resolution skew-compensated frequency synthesizer integrated on a single substrate
US7616073B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2007 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | May 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1976
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator circuit is provided having an oscillating amplifier circuit connected to a resonator. The oscillator/amplifier and resonator are preferably fabricated on a single die using semiconductor fabrication tools. Included with the circuitry is a temperature sensor or transducer, an execution unit, non-volatile memory, a modulator, and frequency synthesizer, all of which are integrated together on the substrate, along with the piezoelectric crystal resonator. The frequency synthesizer can preferably include a phase-locked loop with a divider that is in a feedback loop of the phase-locked loop, in which a divide-by value is received from a modulator that achieves finer and higher resolution frequency selectivity from the voltage-controlled oscillator, also within the phase-locked loop, as an output from the crystal oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.