Gear-tooth sensors tout several improvements

Allegro MicroSystems, Inc. has added three new gear-tooth sensors to its line of AC-coupled Hall-effect devices that offer a smaller package size and an integrated filter capacitor to provide additional reliability. The new A1421LK, A1422LK, and A1423LK devices are suitable for use in speed, position and timing applications such as transmission and engine management, and can be used in industrial applications.