Analog angle sensor with digital feedback loop
US11703314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Feb 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0283
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An angle sensor comprising: a plurality of magnetic field sensing elements configured to detect a magnetic field and generate a respective plurality of analog magnetic field signals; a plurality of analog frontend circuits each analog frontend circuit associated with a respective magnetic field sensing element; and a digital feedback circuit configured to generate digital magnetic field signals from the plurality of analog magnetic field signals and generate digital error correction values, wherein the plurality of analog frontend circuits are configured to obtain the digital error correction values from the digital feedback circuit, generate analog correction values from the digital error correction values, and apply the analog correction values to the plurality of analog magnetic field signals to generate a plurality of corrected analog magnetic field signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.