AS1853
Omnipolar Detection High Performance Low Power Hall-Effect Sensor IC
General
Description
Using low power CMOS process, the AS1853 is designed for low power, 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.
The total power consumption of AS1853 is typically less than 2uA at 2.8V power supply. AS1853 is designed to respond to alternating North and 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 SOT23-3L and SIP-3L Package and is rated over the -40°C to 85°C. The all packages
are RoHS and Green compliant.
Features
● Input Voltage Range : 2.0V to 5.0V
● Micro-power consumption ideal for battery power applications
● 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 =±40Gauss,
B =±30Gauss
● Good RF noise immunity
● No need pull-up resistor
● Small Solution Size
● RoHS & Green Compliant
● SOT23-3L, SIP-3L Packages● -40℃ to +85 ℃ Temperature Range
Applications
● Smart Meter
● Cover switch
● Contact-less switch
