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The YH4915 omnipolar Hall effect sensor IC is fabricated mixed signal CMOS technology .It ncorporates advanced chopper-stabilization techniques to provide accurate and stable magnetic switch points .
The circuit design provdes an internally controlled clocking mechanism to cycle power to the Hall element and analog signal processing circuits .This serves to place the high current-consuning portions of the circuit into a "Sleep"mode.Periodically the device is "Awakened"by this internal logic and the rlux from the Hall element is evaluated against the predefined thrsholdw,If the flux density is above or below the Bop/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.The design optimized for service in applications requiring extended operating .
The output transis or of the YH4915 will be latched on(BOP)in the presence of a sufficienty strong or North magnetic field facingthe marked side of the package.The output will be latched off(Brp)in the absence of amagnetic field.
Features
2.4V-5.5V battery operation
High sensitivity and high stability of the magnetic switching
High resistance to mechanical stress
Digtal output signal
Switching for both poles of a magnet(omnipolar)
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