Reference voltage source, temperature sensor, temperature threshold detector, chip and corresponding system
US6930538B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Jul 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an electrical reference voltage source comprising: a first electrical current source (PTAT 101) adapted to produce a first current (14) proportional to a temperature; and a second electrical current source (CPTAT 102) adapted to produce a second current (15) inversely proportional to the temperature. According to the invention, the first and second current sources are installed in parallel and the voltage source comprises means (R3) of summating the first and second currents producing a reference current in the summation means generating the reference voltage (VREF) at the terminals of the summation means. The invention also relates to a temperature sensor, a temperature threshold detector, a chip and a corresponding system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.