General Description

Using low power CMOS process, the AS1191OD
is designed for low power, high performance omnipolar
detection X/Z axis hall-effect application. 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 AS1191OD is
typically less than 3.0mA at 3.3V power supply. AS1191OD 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 Package and
is rated over the -40°C to 125°C. The all packages are
RoHS and Green compliant.

Features

 X/Z Axis Hall Magnetic Flux Switch
 Omnipolar Operation, easy to use as output
 Input Voltage Range : 3.0V to 24V
 Very high sensitivity hall sensor
 Low Power CMOS process technology
 Chopper stabilization amplifier stage
 High Magnetic Sensitivity
 Good RF noise immunity
 Open-Drain Output
 Small Solution Size
 RoHS & Green Compliant
 SOT23-3L Packages
 -40℃ to +125 ℃ Temperature Range

Applications

 Smart Meter
 Cover switch
 Contact-less switch
 Air Cylinder, Antitheft window, Digital door lock
 Water Purifier, Humidifier Bidet
 Water Meter, Gas Meter, Watttmeter etc
 Washing Machine,Rice Cooker, Refrigerator, Electronic Dictionary, Digital Camera etc