Temperature sensor
US7312648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Dec 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor, which comprises a temperature-dependent element, a comparator unit, first/second capacitors and first/second switching capacitors, is provided. The temperature-dependent element has an input terminal selectively coupled to one of a first current source and a second current source, and has an output terminal. The comparator unit comprises a comparator and first/second feedback capacitors. One end of the first switching capacitor is coupled to the first comparator input terminal, and another end of the first switching capacitor is selectively coupled to one of two different voltages. One end of the second switching capacitor is coupled to the second comparator input terminal, and another end of the second switching capacitor is selectively coupled to one of two different voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.