Product Overview
The ALS31300 is a three-axis linear Hall-effect sensor IC that provides a 12-bit digital output corresponding to the magnetic field measured along the X, Y, and Z axes. It is preconfigured for 3D sensing applications including head-on linear motion, slide-by position sensing, and rotation angle measurements. The sensor also features a joystick mode with a low-gain option for the Z-axis, enabling the use of back-bias magnets for return-to-zero force. With configurable power management, including a low-power sleep mode consuming only 14 nA (typical), the ALS31300 is well-suited for portable, battery-operated applications. It offers flexible I2C addressing and includes 78 bits of user EEPROM for custom configurations.
Product Attributes
- Brand: Allegro MicroSystems
- Package: 10-Contact DFN (EJ)
- Lead Finish: 100% matte-tin leadframe plating
- Lead (Pb) Free: Yes
Technical Specifications
| Feature/Model | ALS31300EEJASR-500 | ALS31300EEJASR-1000 | ALS31300EEJASR-2000 | ALS31300EEJASR-JOY |
|---|---|---|---|---|
| X/Y Channel Sensitivity (LSB/G) | 4 | 2 | 1 | 1 |
| Z Channel Sensitivity (LSB/G) | 4 | 2 | 1 | 0.25 |
| Packing | 6000 pieces per 13-inch reel | 6000 pieces per 13-inch reel | 6000 pieces per 13-inch reel | 6000 pieces per 13-inch reel |
| Full-Scale Input Range (G) | 500 | 1000 | 2000 | X/Y: 2000, Z: 8000 |
| Supply Voltage (VCC) | 2.65 to 3.5 V (single supply) | |||
| I2C Compatibility | Up to 1 MHz (Fast Mode+), down to 1.8 V | |||
| Sleep ICC (typ) | 14 nA | |||
| Low-Power Duty Cycle Mode ICC (typ) | 12 A to 2 mA | |||
| Package Dimensions (mm) | 3 3 0.8 | |||
| Operating Temperature Range (C) | 40 to 85 | |||
| ADC Resolution | 12-bit | |||
| User EEPROM | 78 bits | |||
| I2C Addresses | 16 unique via external resistors, 127 unique via EEPROM | |||
2304140030_ALLEGRO-ALS31300EEJASR-2000_C2654995.pdf
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