Calibration techniques for a precision relaxation oscillator integrated circuit with temperature compensation
US6356161B1 · kind B1 · utility
96Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Apr 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/245
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Several calibration techniques for a precision relaxation oscillator with temperature compensation produces a stable clock frequency over wide variations of ambient temperature. The calibration techniques provide for different methods of determining CTAT current, PTAT current or the ratio of PTAT current to CTAT current. The calibration techniques provide different methods for determining CTAT and PTAT calibration values and for setting CTAT and PTAT calibration select switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.