General Description
AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which is with two Hall effect plates and a output driver, mainly designed for battery–operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total operation power is down to 24uW in the 3V supply.

Features
• Micropower operation
• Operation with North or South Pole
• 2.5V to 5.5V battery operation
• Inverted Output-on without Magnet present
• 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
• Low profile 3 pin SC59 (commonly known as SOT23 in Asia) and DFN2020-3, DFN2020-6 package
• ESD (HBM) ＞ 5KV for DFN2020-3 and DFN2020-6
                      ＞ 6KV for SC59
• SC59, DFN2020-3 and DFN2020-6: Available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish / RoHS Compliant (Note 1)

Applications
• Cellular phone
• PDA
• Cordless phone