How to detect magnetic field sensor and azimuth and strength of magnetic field

摘要

The magnetic field sensor includes a base region formed in a first conductivity type, an emitter region formed in a second conductivity type disposed in the base region for emitting a charge carrier, and a base region disposed in the base region for receiving charge carriers from the emitter region. Provided by a lateral bipolar transistor having a collector region of a second conductivity type. The first and second metal contacts are connected to the collector region to separate the collector current into the first and second collector contact currents. In the presence of a magnetic field, a number of charge carriers are deflected toward the first or second metal contact, depending on the orientation of the magnetic field, resulting in an imbalance in the first and second collector contact currents.