Temperature compensated oscillation circuit
US10666235B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jul 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/501
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A temperature compensated oscillation circuit is provided. The temperature compensated oscillation circuit generates a first delay voltage and a second delay voltage according to the first resistance value. A first order term of a temperature change function of the first resistance value is eliminated. The temperature compensated oscillation circuit generates a reference voltage according to a first reference resistance value and a second reference resistance value. A first order term of a temperature change function of the first reference resistance value is set to equal to a first order term of a temperature change function of the second reference resistance value. The second reference resistance value is adjusted such that variation of the reference voltage matches a second order term of the temperature change function of the first resistance value, thereby providing a clock that does not vary due to a variation in temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.