One point calibration integrated temperature sensor for wireless radio frequency applications
US7461972B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Jun 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07749
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low power analog linear temperature sensor integrateable with digital and/or analog circuits in CMOS fabrication processes. The sensor is accurately calibrateable at a single temperature that yields a linear relationship between measured differential voltage and temperature over a wide variety of temperature ranges. The sensor provides stable voltage and current references that are essential for wireless sensor platforms. There are many applications where sensors require stable voltage/current references and the physics of the sensor's transduction mechanisms are themselves temperature dependent. Wireless platforms such as, but not limited to, passive RFID tags with the addition of on- or off-chip sensors provide a low cost solution for a variety of low cost sensor applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.