Low Power Hall Switch YH4913

GENERAL DCRIPTION

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

and stable magnetic switch points.

     The circuit dign provid an internally controlled clocking mechani to cycle

power to the Hall element and og signal procsing circuits. This serv 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 thrholds. If the flux density is above or below the

Bop/Brp thrholds then the output transistor is driven to change stat accordingly.

While in the “Sleep” cycle the output transistor is latched in its previous state. The

dign has been optimized for service in applications requiring extended operating

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

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.

 Featur

     2.4V-5.5V battery operation

      High sensitivity and high stability of the magnetic switching

      High ristance to mechanical strs

     Dial output signal

     Switching for both pol of a magnet (omnipolar)