Abstract
Abstract For stable measurements of permanent or low-frequency magnetic fields, it is crucial to have a very good signal-to-noise ratio and low offset voltage in Hall sensors. Flicker noise and offset in Hall plates are suppressed by orthogonal switching of a single symmetric Hall plate. The supply current alternates at O° and 90° through the Hall plate. The Hall voltage alternates its sign, while the flicker-noise voltage and offset voltage do not. With high-pass filtering, one gets suppression of the flicker noise and offset voltage. A lower cut-off frequency for the flicker noise of the order of 10% of the switching frequency is introduced.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.