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METHOD FOR DYNAMIC NOISE REDUCTION OF MAGNETIC FIELD SENSOR SIGNALS AND A MAGNETIC FIELD SENSOR CIRCUIT WITH DYNAMIC NOISE REDUCTION
METHOD FOR DYNAMIC NOISE REDUCTION OF MAGNETIC FIELD SENSOR SIGNALS AND A MAGNETIC FIELD SENSOR CIRCUIT WITH DYNAMIC NOISE REDUCTION
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机译:磁场传感器信号的动态降噪方法及具有动态噪声的磁场传感器电路
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摘要
A method for dynamic noise reduction of magnetic field sensor signals of a magnetic field sensor circuit with a magnetic field sensor and a switching device, wherein the magnetic field sensor provides a sensor signal to a sensor output, and wherein the switching device comprises a signal comparator, a low pass filter and a multiplexer, and wherein the switching device comprises a signal input interconnected with the sensor signal output and a signal output, and wherein the signal comparator has a first input interconnected with the signal input and a second input interconnected with the low pass filter, and a control signal output interconnected with the multiplexer. In a first method step, the sensor signal is compared to the level of a signal of the low pass filter by means of the signal comparator, and the result is compared to a predetermined threshold value.
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