Magnetic Position Sensors Family Expands With Automotive-Grade Devices

The AS5270A/B series magnetic position sensors offer increased safety and diagnostic capabilities to help automotive OEMs achieve ISO26262 ASIL system safety-level compliance. The devices suit automotive applications including brake and gas pedals, throttle valve and tumble flaps, steering wheel position, chassis ride-height, Exhaust Gas Recirculation (EGR) valves, fuel-level measurement systems, and 2/4 wheel drive switching. The AS5270A and AS5270B system-on-chip (SoC) devices are 0° to 360° rotary magnetic position sensors that provide contactless high resolution, absolute angle measurements. The AS5270A/B were developed as SEooC (Safety Element out of Context) devices, as defined per the ISO26262 functional safety standard specification. They provide on-chip full datapath diagnostics that test the entire device, from the Hall sensor front end, through the DSP engine that converts raw measurements of magnetic field strength into sine and cosine vectors, to the back-end interfaces and pins.


The AS5270A/B are stacked and aligned dual-die devices, AEC-Q100 Grade 0 qualified and come in MLF-16 surface mount packages for high-reliability and redundant operations. Separate package pins are provided for each die in order to avoid electrical fault in the device from affecting both dies. With an internal 14-bit (0.22o) resolution front-end core Hall sensor array, the AS5270A/B devices provide true 12-bit output resolution. The high sensitivity Hall sensor front-ends also enable the devices to work with small, lower cost target magnets and support a wide magnetic field strength input range of 10-90mT.


The AS5270A/B magnetic position sensors are available immediately in production volumes.

Unit pricing is US$ 3.98 for AS5270A/B in order quantities of 1.000. For more technical information, go to


ams USA Inc.

Raleigh, NC