Crystal oscillator circuit
US11527994B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2021 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Nov 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/21
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator circuit includes an amplifying unit and a first feedback resistor. The amplifying unit includes an inverter at an input stage being connected to the one end of a crystal resonator, an inverter at an output stage being connected to the other end of the crystal resonator, and a linear amplifier. The linear amplifier is connected between an output terminal of the inverter at the input stage and an input terminal of the inverter at the output stage. The linear amplifier includes at least one inverter and a second feedback resistor. The second feedback resistor is connected in parallel to the at least one inverter. The linear amplifier has a conductance with a magnitude larger than a conductance of the inverter at the input stage and equal to or less than a conductance of the inverter at the output stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.