APPLICATIONS
AH-006-3A D P 645LPRELIMINARY INFORMATION S(subject to change without notice) UE ATAugust 28, 2002 speed BiCMOS differential Hall-effect gear-tooth sensor IC that has been optimized to the magnetic circuit. The technology used for this device is Hall-effect based. The chip incorporates a dual-element Hall IC that switches in response to differential magnetic signals created by a ferrous target. The sophisticated self-calibrating digital-processing circuitry normalizes the internal gain of the device to minimize the effect of air gap variations. and to reduce vibration sensitivity. The circuit eliminates magnet and system offsets such as those caused by tilt yet provides zero-speed detection capabilities without the associated running jitter inherent in classical digital solutions. This device is ideal for use in gathering speed, position, and timing information using gear-tooth-based configurations. The ATS640JSB is particularly suited to those applications that require extremely accurate duty cycle control or accurate edge detection.
Allegro MicroSystems
