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Magnetic field sensor for measuring an amplitude and a direction of a magnetic field using one or more magnetoresistance elements having reference layers with the same magnetic direction
Magnetic field sensor for measuring an amplitude and a direction of a magnetic field using one or more magnetoresistance elements having reference layers with the same magnetic direction
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机译:磁场传感器,用于使用一个或多个具有相同参考方向的参考层的磁阻元件来测量磁场的振幅和方向
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摘要
A magnetic field sensor can include a substrate disposed in an x-y plane with x and y axes; one or more magnetoresistance elements, wherein magnetic directions of reference layers of each of the one or more magnetoresistance elements are parallel to the x axis; wherein the one or more magnetoresistance elements are operable to generate a magnetoresistance element signal; a first current conductor operable to generate a first AC magnetic field in an x-direction and a second current conductor operable to generate a second AC magnetic field in a y-direction; and a component determination circuit comprising at least two of: a first demodulator to demodulate the magnetoresistance element signal with a first clock signal with a first frequency, a second demodulator coupled to demodulate the magnetoresistance element signal with the first clock signal or with a second clock signal with a second frequency, or a low pass filter operable to filter the magnetoresistance element signal.
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