ATS16351PSMGTN | Allegro

GMR Camshaft Speed Sensor IC, ATS16351PSMGTN, Allegro

The ATS16351PSMGTN is a true power-on state (TPOS) camshaft sensor incorporating a back-biasing magnet, an advanced fully synchronous digital integrated circuit (IC), and an EMC protection circuit, all in a single sensing solution. The ATS16351PSMGTN incorporates a giant-magnetoresistance (GMR) bridge with an optimized custom magnetic circuit that switches in response to a magnetic signal induced by a ferromagnetic target. The IC contains a sophisticated digital circuit designed to match the temperature behavior of the sensor IC with the integrated magnet.

Signal processing is used to provide zero-speed performance independent of air gap and is designed for the typical operating condition found in an automotive camshaft sensing application. The resulting output of the device is a digital representation of the ferromagnetic target profile. The auto-TPOS feature of the ATS16351PSMGTN enables the sensor IC to identify the installation air gap inside of the engine and to automatically reprogram into memory the optimal threshold for power-on accuracy. A number of factory-programmable options allow for performance optimization to meet specific application requirements.

Features

• True target-state recognition at device power-on (TPOS)
• Integrated diagnostics and certified safety design process for ASIL B compliance
• EEPROM programming for performance optimization, temperature compensation, and production traceability
• Flexible orientation: Able to be mounted at any angle with correct configuration
• Stray-field immunity: Resists aggressor stray fields found in hybrid vehicle environments
• Backward compatibility with Allegro Hall-effect solutions