AH1902-Z-7

AH1902-Z-7 is a high-sensitivity micropower omnipolar hall effect switch IC with internal pull-up and pull-down capability. Designed for portable and battery-powered consumer equipment, such as cellular phones and portable PCs to office equipment, home appliances and industrial applications. The output is activated with either a north or south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop), the output will be turned on (pulled low) and held until B is lower than the release point (Brp). Applications include open and close detect for flip/slide cellular phones, smart cover or dock detect for cellular phones and tablet PCs, cover or display switch in portable PCs (eg: ultrabook), digital still, video cameras and handheld gaming consoles, door, lids and tray position switches, level, proximity and position switches, contact-less switches in home appliances and industrial applications.

• Supply voltage of 1.6V to 3.6V
• High sensitivity, micropower operation
• Chopper stabilized design provides: superior temperature stability
• Minimal switch point drift, enhanced immunity to physical stress
• No external pull-up resistors required, good RF noise immunity
• High ESD capability of 8kV (human body model)
• Output leakage current is < 0.1µA typ at VOUT = 3.6V, output off
• Average supply current is 4.3µA typ at TA = +25°C, VDD = 1.8V
• SOT553 package
• Operating temperature range from -40 to +85°C

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