ATS16351 GMR Camshaft Speed Sensor

Allegro's ATS16351 provides high accuracy, low magnetic field operation and world-class performance. The GMR technology integrates high sensitivity MR (magnetoresistive) sensor elements and high precision BiCMOS circuits on a single silicon IC. With true power-on state (TPOS) recognition, the sensor IC can learn the installation air gap inside the engine and autonomously reprogram the optimal threshold for power-on accuracy into memory.

Ideal for use in automotive applications, the improved S/N ratio results in Allegro’s lowest jitter at the same air gap and better overall air gap at 4.5 mm. Among many advancements, the ATS16351 is resistant to aggressor magnetic fields found in newer hybrid vehicle designs. Integrated EMC components in the ATS16351 can eliminate the need for external protection, all while achieving world-class stray field immunity.

This self-calibrating GMR camshaft speed sensor incorporates a back-biasing magnet, advanced fully synchronous digital IC, and EMC protection circuit in a single sensing solution. The ATS16351 allows for performance optimization with several factory programmable options. Integrated magnet resistors/capacitors offer proven lower solution cost, shorter time to market, and high reliability.