AH1806-W-7

The AH1806 is a high-sensitivity, micro-power Omnipolar Hall effect switch IC, designed for portable and battery powered consumer to home appliance and industrial applications such as smart-meter magnetic tamper detection. Based on two sensitive H all effect plates and a copper stabilized architecture the AH1806 provides a reliable solution over the 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 24µW with a supply of 3V.The single-open-drain output can be switched on with either a North or South pole of sufficient field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop) the output is switched on (pulled low). The output is turned off when B becomes lower than the release point (Brp). The output will remain off when there is no magnetic field.

• 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
• Small Low Profile SOT553 and Industry Standard SC5 9 and SIP-3 Packages
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device