Circuit device and oscillator
US11539327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Sep 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit device includes an oscillation circuit that generates an oscillation signal by using a vibrator, a frequency adjustment circuit that adjusts an oscillation frequency of the oscillation circuit based on frequency adjustment data, a temperature sensor circuit that outputs temperature data, an arithmetic operation circuit, and a storage circuit. The arithmetic operation circuit outputs converted temperature data by performing, on the temperature data, conversion processing in which a slope of the converted temperature data with respect to the temperature data in a first temperature range is different from a slope of the converted temperature data with respect to the temperature data in a second temperature range. The storage circuit stores a lookup table representing a correspondence between the converted temperature data and the frequency adjustment data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.