Single chip push-pull bridge-type magnetic field sensor
US9664754B2 · kind B2 · utility
0Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2012 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | May 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a design of a single-chip push-pull bridge sensor, composed of magnetoresistive elements, utilizing on-chip permanent magnets. The permanent magnets are oriented to preset magnetization directions of free layers of adjacent sensor bridge arms so that they point to different directions with respect the same sensing direction, enabling push-pull operation. The push-pull bridge sensor of the present invention is integrated on a single chip. Additionally, an on-chip coil is disclosed to reset or calibrate the magnetization directions of the free layers of the magnetoresistive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.