AH1809-P-B

AH1809-P-B is a low-sensitivity micropower omnipolar Hall effect switch IC. It is designed for battery-powered consumer products, home appliances, and industrial equipment such as smart e-meters. Based on two Hall Effect plates and a chopper stabilized architecture the AH1809 provides a reliable solution over the whole operating range. When the magnetic flux density perpendicular to the package (B) 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. Applications include smart E-meters, tamper protection switch, door, lids and tray position switch, proximity and position switches, level detects, on/off switch digital contact-less switch in industrial and consumer products.

• 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, high ESD
• Operating temperature range from -40°C to +125°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 +125°C, VDD = 2.5V to 5.5V
• Duty cycle is 0.1% typ at TA = +25°C, VDD = 3V
• SIP-3L package