AS1916
Unipolar South Detection High Performance Hall-Effect Sensor IC
General Description
Using low power CMOS process, the AS1916 is designed for low power, high performance unipolar detection hall-effect application, such as home appliance, industrial, electric tools, brushless DC motor etc, contactless switch, solid state switch and lid close sensor etc battery operation. The hall IC integrated an on-chip hall voltage generator for magnetic sensing, a comparator that amplifiers the hall voltage, a Chopper amplifier, a Schmitt trigger to provide switching hysteresis for noise rejection, and a complementary output.
The total power consumption of AS1916 is typically less than 2.0mA at 3.6V power supply. AS1916 is designed to respond to alternating South poles. When the magnetic flux density (B) is larger than operate point (BOP), the output will be turned on (low), the output is held until the magnetic flux density (B) is lower than release point (BRP), then turn off (high).
The device is available in small SOT23-3L Package and is rated over the -40°C to 125°C. The all packages are RoHS and Green compliant.
Features
● Input Voltage Range : 2.2V to 5.5V
● South Unipolar Operation
● Chopper stabilization amplifier stage
● Magnetic Sensitivity (typical) BOP= 29Gauss, BRP= 18Gauss
● Good RF noise immunity
● Open-Drain Output Capable of 20mA
● Small Solution Size
● RoHS Compliant
● Small SOT23-3L Packages
● -40℃ to +125 ℃ Temperature Range
Applications
● Home Appliance
● Industrial Valves, Solenoids
● Contact-less switch in consumer products
● Solid State Switch
● Handheld Wireless Handset Awake Switch
● Lid close sensor for battery-powered devise
● Magnet proximity sensor for reed switch replacement in low duty cycle applications
● Brushed DC Motor Feedback
● Docking Detection
● Door Open and Close Detection
