Omnipolar Detection High
Performance Hall-Effect Sensor IC
General Description
Using low power CMOS process, the AS1893C is
designed for high performance omnipolar detection
hall-effect application, such as cover switch,
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.
Features
Input Voltage Range : 2.5V to 5.5V
Operation Frequency: 20kHZ(min)
Omniplar Operation, easy to use as output
Very high sensitivity hall sensor
Low Power CMOS process technology
Chopper stabilization amplifier stage
Magnetic Sensitivity (typical)
B
OP
=±30Gauss, B
RP
=±20Gauss
Good RF noise immunity
No need pull-up resistor
Small Solution Size
RoHS & Green Compliant
SOT23-3L and SIP-3L Packages
-40℃ to +125 ℃ Temperature Range
Applications
Cover switch in clam-shell cellular phones
Cover switch in Notebook, PC/PAD
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
DV, DSC, and White Goods
