Angle sensor for automotive position sensing
The TLE5009E1010FUMA1 is an automotive-grade angle sensor from Infineon's TLE5009 family, designed for contactless 360° rotational position measurement using an external magnet. It outputs analog sine and cosine voltage signals proportional to the magnetic field angle, making it suitable for steering angle, throttle position, or motor shaft feedback in under-hood and chassis applications. Rated for a supply voltage of 3 V, the sensor delivers a ratiometric analog output that scales with the supply, simplifying interface to a 3 V ADC or microcontroller. The -40°C to 150°C temperature range and AEC-Q100 qualification confirm it for the engine bay and transmission environments where standard commercial sensors would drift or fail.
Supply voltage and output signal
The 3 V nominal supply rail sets the full-scale output swing — the sine and cosine signals are ratiometric, so a stable 3 V reference is needed for consistent angle accuracy across temperature. The analog voltage output eliminates the need for a digital interface, but the PCB layout must keep the analog traces short and shielded from switching noise on the same board. The sensor measures rotation from 0° to 360° continuously, with no mechanical stop. The external magnet (not included) must be mounted on the rotating shaft and aligned to the sensor's sensitive axis per the datasheet mechanical drawing — misalignment of even 0.5 mm introduces angle error that cannot be calibrated out in a simple system.