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 (B
OP
), the output will be turned on (low),
the output is held until the magnetic flux density (B) is
lower than release point (B
RP
), 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)
B
OP
= 29Gauss, B
RP
= 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
