OH4913 Omnipolar Hall IC

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OH4913 Omnipolar low power hall IC datasheet

Product description

OH4913 IC is an integrated hall-effect sensor explicitly designed to meet the requirements of low-power devices, for example, as an On/Off switch in Cellular Flip-Phones, with battery operating voltages of 2.4V-5.5V. An onboard clock scheme is used to reduce the average operating current of the IC. During the operating phase, the IC compares the actual magnetic field detected with the internally compensated switching points. The output Q is switched at the end of each operating phase. During the Stand-by phase, the output stage is latched, and the current consumption of the device reduced to some μA. The IC switching behavior is Omnipolar, and it can be switched on with either the North or South pole of a magnet.

Features

• Micropower design
• High sensitivity and high stability of the magnetic switching points
• High resistance to mechanical stress
• Switching for both poles of a magnet (omnipolar)

Applications

• Cover switch in clam-shell cellular phones
• Cover switch in Notebook PC/PDA
• Contact-less switch in consumer products

Magnetic-electrical Transfer Characteristics