GMR high current, wide dynamic range sensor
US6429640B1 · kind B1 · utility
75Cited by
24References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Sep 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A configuration where a wide range of current can be sensed accurately in spite of using a magnetic material with non-linearities and limited hysteresis. This configuration includes: a strip line current carrier, an IC chip containing a GMR sensor element, an integrated drive coil, like an isoloop. Field produced by current in the strip line is detected by the sensor. Feedback field is produced by current in an on-chip coil to counteract spurious fields from the strip line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.