General DescriptionAS1509 is a 3D magnetic programmable digital
switch Hall sensor which high sensitivity and wide
measurement range of the magnetic flux through I2C
programmable X/Y/Z-axis operation switch point.
selecting options of the various sensitivity with the low
power consumption providing a built-in 16 bits ADC
digital output. It can also detect the open/close state for
many applications by one or multiple external magnets.
This sensor is comprised of a Hall element, an
offset cancellation circuitry, a programmable gain
amplifier, a 16-bits low power ADC, and control logic in
a single chip. The adjustment of the op

Features
 3-Axis single chip Magnetometer hall sensor
with digital output
 3-axis Programmable Magnetic Switch Function
 Input Voltage Range VDD: 1.7V to 3.6V
 Digital Interface Supply VID: 1.2V to VDD
 Operation Current: 50uA (typ.) at 10Hz
Operating Frequency
 High Dynamic Range of Maximum ±30mT
 High Resolution of Maximum 2.5uT/LSB
 Built-in 16bit Adjustable ADC for magnetometer
data outputs
 The maximum output data rate 500Hz
 Absolute 360o angle output
 Two Slave Address (0x18h or 0x19h)
 Programmable Through I2C Compatible
Interface (Up to 400kHz): 1.2~3.6V I2C interface
 INTB Interrupt Function: when magnetic

Applications Magnetometer for External Detection
 Lid Opening Angle Detection
 Mobile Phones and Smart Phones
 Touch Screen Disable
 Mechanical Switch Replacement
 Universal Remote Control
 Foldable Device Angle Detection
 Angle Sensor Application