MLX903xx

MLX903xx is a family of magnetic position sensors produced by Melexis. These devices provide contactless angular position sensing using the Hall effect and on‑chip signal processing. They are used when a compact, rugged sensor is needed to determine the orientation or position of a magnet relative to the sensor, suitable for automotive and industrial applications.

Operation typically involves a Hall element that detects the magnetic field from a magnet attached to a rotating shaft or a multi‑pole magnet. On‑chip circuitry converts the magnetic flux into an angular output. Depending on the model, the device can deliver an absolute angular position or a calibrated output and may provide digital interfaces or analog outputs. Common interfaces include SPI or PWM-like digital outputs, with some variants offering ratiometric analog signaling. Most MLX903xx devices operate from a single supply and are designed to work across wide temperature ranges and, in many versions, automotive environments.

Features generally include high angular resolution through on‑chip linearization and temperature compensation, programmable angle mapping and dead zones, and low power consumption in a compact package. The family supports a variety of magnet configurations, from single-pole to multi‑pole arrangements, enabling different resolution, precision, and mechanical mounting options. Automotive-grade variants are available for demanding applications.

Applications span automotive and industrial sectors, such as steering angle sensing, throttle position, gear or shaft position sensing, robotics, and servo systems. The MLX903xx denotes a family with multiple models, each offering different resolutions, interfaces, power ranges, and magnet configurations; exact specifications are model‑dependent and found in the respective datasheets.