Description
The AH180N is a high sensitivity, micro power Omnipolar Hall Effect switch IC designed for portable and battery powered equipment such as cellular phones, PDA’ s and portable PC’ s. Based on two sensitive Hall Effect plates and a chopper stabilized architecture the AH180N provides a reliable solution overthe whole operating range. To support portable and battery powered equipment the design has been optimized to operate over the supply range of 2.5V to 5.5V and consumes only 24µA with a supply of 3V.

FEATUREs
• Omnipolar (North or South pole) Operation
•High Sensitivity
• Single Open Drain Output
•Micropower Operation
• 2.5V to 5.5V Operating Range
• Chopper Stabilized Design Provides
     Superior Temperature Stability
     Minimal Switch Point Drift
     Enhanced Immunity to Stress
• Good RF Noise Immunity
• -40°C to +85°C Operating Temperature
• ESD (HBM) > 6KV
• SC59 (SOT23), TSOT23, and SOT553 Low Profile Packages
•  Totally Lead-Free & Fully RoHS Compliant
•  Halogen and Antimony Free. “Green” Device

APPLICATIONs
• Cover Switch in Clam-Shell or Slide Type Cellular Phones
• Display Switch for Portable PCs
• On/Off Switch for PDAs and Digital Cameras
• Contact-Less Switch in Consumer Products