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.

 • 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
 • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 • Halogen and Antimony Free. “Green” Device (Note 3)

APPLICATIONs
 • Cover Switch in Clam-Shell Cellular Phones
 • Cover Switch in Notebook PC/PDA
 • Contact-Less Switch in Consumer Products