AH1808-W-7

AH1808-W-7 is a high-sensitivity, micropower omnipolar hall effect switch IC. It is designed for portable and battery-powered consumer equipment, home appliances and industrial equipment such as smart meter magnetic-tamper detection. Based on two sensitive hall effect plates and a chopper-stabilized architecture, the AH1808 provides a reliable solution over the whole operating range. When 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. The output will remain off when there is no magnetic field. Applications include doors, lids, covers and trays position detect switches, display switch for portable PCs and tablets, on/off switch for PDAs and digital cameras, liquid level detection for coffee machines, smart meters, position, proximity and level detection contact-less switch in battery-powered consumer, home appliances and industrial.

• Omnipolar (north or south pole) operation, single open drain output
• 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, ESD (HBM) > 6KV
• Operating temperature range from -40°C to +85°C
• Output leakage current is < 0.1µA typ at VOUT = 5.5V, output off, TA = +25°C, VDD = 3V
• Average supply current is 40µA max at TA = -40 to +85°C, VDD = 2.5V to 5.5V
• Duty cycle is 0.1% typ at TA = +25°C, VDD = 3V
• SC59 package

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