Low Power Hall Switch YH4913

GENERAL DESCRIPTION

The YH4913 omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS
technology .It ncorporates advanced chopper-stabilization techniques to provide accurate

and stable magnetic switch points.

     The circuit design provides an internally controlled clocking mechanism to cycle

power to the Hall element and analog signal processing circuits. This serves to place

the high current-consuming portions of the circuit into a “Sleep” mode. Periodically the

device is “Awakened” by this internal logic and the magnetic flux from the Hall element

is evaluated against the predefined thresholds. 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 has been optimized for service in applications requiring extended operating

The output transis or of the YH4913 will be latched on (Bop) in the presence

of a sufficiently strong South or North magnetic field facing the marked side of the

package. 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)

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