Hall sensor analog front end
US11307267B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Nov 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/075
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes a first amplifier and a first Hall sensor group coupled to the first amplifier. The system includes a second amplifier and a second Hall sensor group coupled to the second amplifier, where the second Hall sensor group includes a spinning Hall group. The system includes a first demodulator, where the first demodulator input is coupled to the first amplifier output. The system includes a second demodulator, where the second demodulator input is coupled to the second amplifier output. The system also includes a subtractor, the first subtractor input coupled to the first demodulator output, and the second subtractor input coupled to the second demodulator output. The system includes a filter coupled to the subtractor output and to a second input of the first amplifier, and a calibration module coupled to the subtractor output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.