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 SOT553, SOT23-3L and
SIP-3L Package and is rated over the -40°C to 125°C. The all packages are RoHS and Green compliant.

Features

 Input Voltage Range : 1.65V to 5.5V
 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)
BOP=±30Gauss, BRP=±20Gauss
 Good RF noise immunity
 No need pull-up resistor
 Small Solution Size
 RoHS & Green Compliant
 SOT553, SOT23-3L and SIP-3L Packages
 -40℃ to +125 ℃ Temperature Range

Applications

 Smart Meter
 Cover switch
 Contact-less switch