Temperature sensing device and method of driving thereof
US9297703B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 5, 2012 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Apr 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensing device includes a first frequency generator for generating a first clock signal having a first frequency that is constant regardless of a temperature; a second frequency generator for generating a second clock signal having a second frequency that is changed according to the temperature; and a data holding unit for outputting a temperature code indicating a number of pulses of the second clock signal counted for a reference time at which a number of pulses of the first clock signal reaches a predetermined threshold. The temperature sensing device does not require a reference clock signal input from the outside and is insensitive to the change in the process, thereby being capable of improving the performance of the temperature sensing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.