3D Magnetic Position Sensor ICs Allegro MicroSystems 3D Magnetic Position Sensor ICs are robust, high-performing, accurate 3D magnetic sensing solutions combining extensive expertise in planar and vertical hall technologies. The 3D Magnetic Position Sensor ICs deliver a wide range of contactless motion detection and work with virtually any moving magnet system, simplifying magnetic design and system integration. With unparalleled design flexibility for automotive, industrial, and consumer applications, 3DMAG™ sensors have all angles covered.