Allegro MicroSystems A19351 Giant Magnetoresistance (GMR) AK Protocol Wheel Speed/Direction Sensor Integrated Circuits (ICs) are designed to measure ring magnets used in automotive braking systems. A19351 ICs provide wheel speed and direction information. The fully integrated circuits feature sensing elements, voltage regulators, analog-to-digital converters, and a digital controller. These components adaptively measure the magnetic signal and provide a robust, low-jitter AK Protocol output across a two-wire interface.The high-performance A19351 GMR ICs feature Allegro’s SolidSpeed Digital Architecture, a mixed-signal speed sensor architecture for highly adaptive performance. This architecture provides a wide dynamic range of operating air gap and compensates for temperature drift effects. Flexibility is passed to the system integrator, enabling looser mechanical constraints with the wide operating air gap.
