The YH13s omnipolar Hall effect sensor IC is fabricated from mixed signal CMOStechnology .It ncorporates advanced chopper-stabilization techniques to provide accurateand stable magnetic switch points.
The circuit design provides an internally controlled clocking mechanism to cyclepower to the Hall element and analog signal processing circuits. This serves to placethe high current-consuming portions of the circuit into a “Sleep” mode. Periodically thedevice is “Awakened” by this internal logic and the magnetic flux from the Hall elementis evaluated against the predefined thresholds. If the flux density is above or below theBop/Brp thresholds then the output transistor is driven to change states accordingly.While in the “Sleep” cycle the output transistor is latched in its previous state. Thedesign has been optimized for service in applications requiring extended operating
The output transis or of the YH13s will be latched on (Bop) in the presenceof a sufficiently strong South or North magnetic field facing the marked side of thepackage. The output will be latched off (Brp) in the absence of a magnetic field. Features

2.4V-5.5V battery operation
High sensitivity and high stability of the magnetic switching
High resistance to mechanical stress
Digital output signal
Switching for both poles of a magnet (omnipolar)