Have Questions? Let us help!
We're passionate about innovation. Reach out and you'll hear back from an expert shortly.
One of our solution experts will be in touch with you shortly. Keep reading to learn more about our industry leading solutions.
The ALS31300 3DMAG™ position sensor provides a 12-bit digital value corresponding to the magnetic field measured in each of the X, Y, and Z axes. The ALS31300 is preconfigured for use in 3D sensing applications for head-on linear motion, slide-by position sensing, and rotation angle measurements. The ALS31300 is also offered in joystick mode, including a low gain option for the Z axis channel. This feature enables the use of a back-bias magnet to provide return-to-zero force instead of traditional spring-based solutions.
Three different factory-programmed sensitivity ranges are available: ±500 G, ±1000 G, and ±2000 G.
The I2C address of the ALS31300 can be set either by external resistors (16 unique addresses) or programmed into EEPROM via I2C (127 unique addresses), allowing for multiple devices on the same bus. The ALS31300 also includes 78 bits of user EEPROM.
The ALS31300 enables robust joystick design, replacing potentiometer based joystick modules. Magnetic joysticks can be low-profile, and enable low system power for battery-powered applications, and support joystick wake-on motion. With the addition of a back-bias magnet the ALS31300 enables magnetic return to zero, or removable joysticks.
Power management of the ALS31300 is highly configurable, allowing for system-level optimization of supply current and performance. Sleep mode consumes just 14 nA (typical), making the ALS31300 well suited for portable, battery-operated applications.
The ALS31300 is supplied in a 3 mm × 3 mm × 0.8 mm, 10-contact DFN package (“EJ”). This small footprint package is lead (Pb) free, with 100 % matte-tin lead-frame plating.
|Document Type||Document Name|
|Application Note||3D Hall-Effect Sensor Magnetic Tamper Detection Smart Home Systems|
January 31, 2023PCB Ground Plane Optimization for Coreless Current Sensor Applications
|Application Note||Advanced Power Management Using the ALS31300 and ALS31313 3D Hall-Effect Sensor ICs with I2C Output|
|Brochure||3DMAG Position Sensors|
3D Hall 9 Click is a compact add-on board used to detect the strength of a magnetic field in all three dimensions. This board features the ALS31300, a 3D linear Hall-effect sensor with digital output and advanced low power management from Allegro Microsystems.