Temperature sensor circuit
US12111216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2021 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Mar 11, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K2219/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor circuits includes a temperature sensing module, a current generator, a current controlled oscillator, and a counter. The temperature sensing module is sensitive to temperature changes. The current generator respectively generates a positive temperature coefficient current positively related to temperature and a negative temperature coefficient current negatively related to temperature according to the temperature sensed by the temperature induction module. The current controlled oscillator oscillates according to the positive and the negative temperature coefficient currents respectively and outputs a positive and negative temperature coefficient oscillation signals. The counter receives a clock signal and calculates a first period accumulation number of the negative temperature coefficient oscillation signal and a second period accumulation number of the positive temperature coefficient oscillation signal in the same number of clock periods respectively, and acquires a temperature value based on the period accumulation numbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.