Temperature sensor
US6921199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Mar 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor comprises (a) a first voltage generating circuit that generates and outputs a first voltage having a positive or negative temperature coefficient in proportion to the absolute temperature; (b) a second voltage generating circuit that generates a second voltage having an opposite sign of temperature coefficient compared to the first voltage and outputs a reference voltage that does not have a temperature coefficient based on the second voltage; and (c) a comparator that compares the first voltage output from the first voltage generating circuit with the reference voltage output from the second voltage generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.