Magnetic stray fields may be generated by magnets, motors, transformers or any current-carrying conductors such as electric power lines. They are of growing concern in one sector of the automotive industry in particular: the number and the strength of the stray magnetic fields is greater in electric and hybrid-electric vehicles (EVs and HEVs) than in conventional cars powered by an internal combustion engine (ICE). Magnetic stray fields influence most position sensors, which are based on Hall effect technology.
ams OSRAM position sensors feature a unique patented technology which protects them against interference from magnetic stray fields.
Because the technology behind stray field immunity is integrated into the sensor IC, no external shielding needs to be mounted on the chip. This helps to lower the bill-of-materials and assembly cost of a position sensing system.