MAGNETORESISTIVE SENSOR SYSTEMS WITH STRAY FIELD CANCELLATION UTILIZING AUXILIARY SENSOR SIGNALS

A system includes first and second magnetic sense elements for producing first and second output signals, respectively, in response to an external magnetic field along a sensing axis parallel to a plane of the first sense element, a magnetization direction of the second element being rotated in the plane relative to a magnetization direction of the first element. The second output signal differs from the first output signal in dependency to a magnetic interference field along a non-sensing axis of the first magnetic field. A processing circuit, receives the first and second output signals, identifies from a relationship between the first and second output signals an influence of the magnetic interference field on the first output signal, and applies a correction factor to the first outputsignal to produce a resultant output signal in which the influence of the magnetic interference field is substantially removed. 一种系统包括第一和第二磁感测元件，用于响应于沿着与第一感测元件的平面平行的感测轴的外部磁场分别产生第一和第二输出信号，第二元件的磁化方向在该平面中相对于第一元件的磁化方向旋转。第二输出信号与第一