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    MAGNETIC FIELD SENSOR HAVING ALIGNMENT ERROR CORRECTION
    4.
    发明公开
    MAGNETIC FIELD SENSOR HAVING ALIGNMENT ERROR CORRECTION 审中-实审

    公开(公告)号：EP4325238A3

    公开(公告)日：2024-04-24

    申请号：EP23213503.8

    申请日：2017-06-02

    申请人： Allegro MicroSystems, LLC

    发明人： ROMERO, Hernán, D.

    IPC分类号： G01P21/02 ,  G01D18/00 ,  G01R35/00 ,  G01R33/00 ,  G01R33/06

    CPC分类号： G01P21/02 ,  G01R33/06 ,  G01R35/005 ,  G01R33/0017 ,  G01R33/0029

    摘要： A method of calibrating a magnetic field sensor includes setting a first input signal at a first input node of a processor of the magnetic field sensor to a constant value. While the magnetic field sensor experiences a magnetic field, a first transition at an output node of the processor is measured. A second input signal at a second input node of the processor is set to the constant value. While the magnetic field sensor experiences the magnetic field, a second transition of at the output node of the processor is measured. An orthogonality error value is calculated based on a deviation of the first transition and the second transition. The first and/or second input signal is adjusted by modifying the first and/or second input signal by a function of the calculated orthogonality error value to compensate for the orthogonality error.