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Proceedings 2017, 1(4), 329;

A Novell Hall Magnetometer Using Dynamic Offset Cancellation

Institute of Robotics at Bulgarian Academy of Sciences, Sofia, Bulgaria
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 9 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
PDF [267 KB, uploaded 14 August 2017]


A novel Hall magnetometer using dynamic offset cancellation principle is presented. It consists from a single triangular silicon plate with three contacts and interface electronics. The proposed dynamic offset-cancelling measurement cycle includes three states. During each state, an external circuit is switched to the plate contacts in a certain way. This way, the direction of current flow through the Hall plate is changed from phase to phase. At the same time, the output voltage is measured. After averaging the obtained three voltages per a measurement cycle, the offset voltage cancelled and this way the offset-free Hall voltage is obtained. The obtained offset reduction factor is very promising, reaching 120–130. The Hall device sensitivity is about 25 V/AT.
Keywords: dynamic offset cancellation; hall magnetometer; sensor interface electronics dynamic offset cancellation; hall magnetometer; sensor interface electronics
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lozanova, S.; Noykov, S.; Altunyan, L.; Ivanov, A.; Roumenin, C. A Novell Hall Magnetometer Using Dynamic Offset Cancellation. Proceedings 2017, 1, 329.

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