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Magnetic field sensors having a magnetic anti-aliasing filter
Magnetic field sensors having a magnetic anti-aliasing filter
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机译:具有磁性抗混叠滤波器的磁场传感器
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摘要
A magnetic field sensor includes a substrate, a first channel comprising a first magnetic field sensing element supported by the substrate and configured to generate a first magnetic field signal indicative of a first magnetic field experienced by the first magnetic field sensing element, a second channel comprising a second magnetic field sensing element supported by the substrate and configured to generate a second magnetic field signal indicative of a second magnetic field experienced by the second magnetic field sensing element, and at least one shield configured to reduce a bandwidth of the first magnetic field by a first amount and to reduce a bandwidth of the second magnetic field by a second amount. The shield is able to act as a magnetic anti-aliasing filter for the magnetic field sensing elements, which can then be chopped or sampled.
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