General Description

Using low power CMOS process, the AS1826A is designed for low power, high performance unipolar detection dual output 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 I 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 two complementary output
The tota power consumption of AS1826A is
typically less than 3.0uA at 1.8V power supply. AS1826A is designed to respond to alternating North and South poles. White 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 DFN1014-4L (1.0mm x
1.4mm x 0.37mm) and DFN1010-4L(thin, 1.0mm x
1.0mm x 0.3mm) Package and is rated over the -40°C to 85°C. The all packages are RoHS and Green compliant.

Features

Input Voltage Range :1.6V to 5.0V
Micro-power consumption ideal for battery power applications
Unipolar Operation, dual output
Very high sensitivity hall sensor
Low Power CMOS process technology
Chopper stabilization amplifier stage
Magnetic Sensitivity (typical) BoPS=26Gauss, BRPS=16Gauss BOPN=-26Gauss, BRPN=-16Gauss
Good RF noise immunity
No need pull-up resistor
Small Solution Size
RoHS & Green Compliant
DFN1014-4L (1.0mm x 1.4mm x 0.37mm) & DFN1010-4L(thin, 1.0mm x 1.0mm x 0.3mm) Packages
-40°C to +85 °C 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