Three-axis linear Hall-effect sensor: accurate & flexible potentiometer replacement

Three-axis linear Hall-effect sensor: accurate & flexible potentiometer replacement

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By eeNews Europe

The ALS31300 is preconfigured and available for use in a joystick mode that includes crouch capability or single-ended X, Y, and Z modes. Single-ended configured devices are suitable for 3D linear sensing or 2D angle sensing applications and are available with three different factory-programmed sensitivity operating ranges: ±500 G, ±1000 G, and ±2000 G. The sensitivity temperature coefficient is preprogrammed to support the drift profile of neodymium magnets. This device has been designed specifically for gaming, electric metering, white goods, and industrial applications.


The ALS31300 incorporates I2C interface for integration; the I2C address 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.


Power management of the ALS31300 is highly configurable, allowing for system-level optimisation of supply current and performance. Sleep mode consumes 14 nA (typical), suiting the ALS31300 for portable, battery-operated applications.


The ALS31300 is supplied in a 3 × 3 × 0.8 mm, 10-contact DFN package (“EJ”).


Allegro MicroSystems;


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