Methods and apparatus for magnetic sensor having integrated coil
US11680996B2 · kind B2 · utility
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239References
19Claims
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Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/09
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for a magnetic sensor having a die and sensor circuitry formed in a device layer of the die with a coil integrated with the die to generate a magnetic field. A magnetoresistive magnetic field sensing element on the die detects changes in the magnetic field generated by the coil as a result of the presence of a ferromagnetic target. The sensor circuitry may process the changes in the magnetic field generated by the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.