Automotive Inductive Position Sensors

About Contactless (Non-contact) Inductive Position Sensor ICs

At their most basic function, a position sensor is any device that provides measurement data based on the position of a moving object. Traditional magnet-based solutions measure angular position using variations of magnetic field amplitude induced by the displacement or rotation of a moving magnet. However, these solutions are expensive and offer limited accuracy for small angular movements and/or motor applications with a large number of pole pairs. Renesas’ no contact, magnet-free inductive position sensor ICs interface with thin PCB-based coils and a metallic target to determine position and provide accurate position data back to the system. These inductive, contactless solutions offer significant advantages in cost, temperature range, reliability, design flexibility, and immunity to magnetic stray fields.