General Description

AH1822 is comprised of two Hall effect plates and an open-drain output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total power consumption in normal operation is typically 24μW with a 3V power source.

Features

• Micropower operation

• Operation with magnetic field of either north or south pole (omnipolar)

• 2.5V to 5.5V battery operation

• Chopper stabilized

    • Superior temperature stability

    • Extremely Low Switch-Point Drift

    • Insensitive to Physical Stress

• Good RF noise immunity

• -40°C to 85°C operating temperature

• ESD (HBM) ＞ 5KV

• DFN2015-6 and DFN3020-6: Available in “Green” Molding Compound (No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

Applications

• Cover switch in clam-shell cellular phones

• Cover switch in Notebook PC/PDA

• Contact-less switch in consumer products