MAGNETIC SENSOR

The magnetic sensor of the present invention includes a substrate, a magnetic detection element having an output signal characteristic of an even function for a magnetic field formed through an insulating layer on the substrate and having a detection axis in an X-axis direction in an in-plane direction of the substrate, an AC electric wiring capable of applying an AC magnetic field to the magnetic detection element, and a DC electric wiring capable of applying a DC magnetic field to the magnetic detection element. Since the magnetic detection element, the AC electric wiring and the DC electric wiring are isolated from one another and at least a portion of the AC electric wiring is buried in the substrate, an increase in power consumption caused by an increase in resistance of the AC electric wiring is suppressed when an alternate current is supplied, and high magnetic resolution is attained.