Sensor IC for centre detection of a light source

PREMA IC PR5510

PR5510 can detect the lateral position of a light spot on the sensor. It consists of triangular photo­diodes with reciprocal orientation, to­geth­er with a differential transimpedance amplifier. If illuminated uniformly, the output is Vcc/2; if the light is biased towards one of the triangles, the output is higher or lower than Vcc/2, proportional to the deviation from the centre position.

APPLICATIONS

• light beam alignment
• optical potentiometers
• vibration sensors
• optical position detectors