Sensor Resistance Based Sensitivity Temperature Drift Tracking of Integrated 3D Hall Sensors
Krause D, Stahl-Offergeld M, Sand M, Kohlbrenner C, Weigel R (2023)
Publication Type: Conference contribution
Publication year: 2023
Journal
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: Proceedings of IEEE Sensors
Event location: Vienna, AUT
ISBN: 9798350303872
DOI: 10.1109/SENSORS56945.2023.10325285
Abstract
The magnetic sensitivity of voltage controlled Hall sensors changes up to $\pm 40\%$ in the temperature range from -40°C to 125°C, resulting in large measurement errors. To track the temperature induced sensitivity variation, state of the art systems use additional temperature sensors and/or on-chip calibration coils. This paper presents a method to track the magnetic sensitivity temperature drift of a Hall sensor based on its own resistance. The proposed method results in a tracking accuracy of $\pm$ 6% for Bx, By and $\pm$ 3% for Bz in the temperature range from -40°C to 125°C. Providing a magnetic sensitivity to bias current transfer function further enhances the tracking accuracy to $\leq 1\%$. It requires no additional integrated coils or temperature sensors.
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Germany (DE)How to cite
APA:
Krause, D., Stahl-Offergeld, M., Sand, M., Kohlbrenner, C., & Weigel, R. (2023). Sensor Resistance Based Sensitivity Temperature Drift Tracking of Integrated 3D Hall Sensors. In Proceedings of IEEE Sensors. Vienna, AUT: Institute of Electrical and Electronics Engineers Inc..
MLA:
Krause, Dennis, et al. "Sensor Resistance Based Sensitivity Temperature Drift Tracking of Integrated 3D Hall Sensors." Proceedings of the 2023 IEEE SENSORS, SENSORS 2023, Vienna, AUT Institute of Electrical and Electronics Engineers Inc., 2023.
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