Hall sensor with a reduced offset signal

Details Hall sensor with a reduced offset signal Hall sensor with a reduced offset signal

G - Physics

01

D

G01D 3/02 (2006.01) G01D 5/14 (2006.01) H01L 43/04 (2006.01) H01L 43/06 (2006.01)

Patent

CA 2363504

The invention relates to a hall sensor (1) comprising two opposite-lying power supply contact electrodes (7a, 7c) between which an active region (5) is defined. Said electrodes are provided for generating a current flow through the active region. The inventive hall sensor also comprises two opposite-lying voltage tapping contact electrodes (7b, 7d) for tapping a hall voltage, whereby a section of each contact electrode facing the active region (5) is shaped in such a way that the interfering influence of the contacts on the offset-reducing effect of the spinning current operation is reduced.

Cette invention concerne un capteur de Hall (1) présentant deux électrodes de contact d'alimentation électrique (7a, 7c) opposées, entre lesquelles une zone active (5) est définie, ces électrodes servant à produire un flux de courant à travers la zone active, et deux électrodes de contact de prise de tension (7b, 7d) opposées, servant à prendre une tension de Hall. Une partie de chacune de ces électrodes, faisant face à la zone active (5), est conçue de façon que l'influence perturbatrice des contacts sur l'effet de réduction de décalage du fonctionnement avec courant rotatif est réduite.

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