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