Signal processing arrangement for a hall sensor and signal processing method for a hall sensor
US11009563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2018 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A signal processing arrangement for a Hall sensor comprises a signal path, a feedback path and a converter path. The signal path comprises a Hall element and a front-end amplifier which are connected in series and arranged to generate an output signal depending on a magnetic field. The feedback path comprises a compensation circuit and is coupled to the signal path. The converter path comprises an analog-to-digital converter and an offset compensation circuit and is coupled to the signal path. A switch network is coupled between the signal path, the feedback path and the converter path. In a compensation phase, the switch network electrically connects the feedback path to the signal path such that the compensation circuit generates a compensation signal which is coupled into the signal path. In a sampling phase, the switch network connects the signal path to the converter path such that the output signal is reduced by the compensation signal is provided at the converter path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.