ALS31300EEJALU 500 three axis Hall effect sensor with 1 percent accurate trimmed sensitivity options
Product Overview
The ALS31300 is a three-axis linear Hall-effect sensor IC that provides a 12-bit digital value proportional 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 device also supports 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 its advanced low-power management, including a sleep mode consuming only 14 nA (typical), the ALS31300 is ideal for portable, battery-operated applications. It features an industry-standard I2C interface for easy system integration and is supplied in a compact 3 mm 3 mm 0.8 mm, 10-contact DFN package.
Features and Benefits
- X- and Y-axis sensing of joystick position
- Z-axis sensing of crouch or push button motion
- Capable of operating with back-bias magnets for joystick return-to-zero
- Ideal for battery-powered, low-voltage applications
- Flexible 12-bit ADC with 10-bit ENOB
- 1% (typ) accurate factory-trimmed sensitivity options
- Integrated temperature sensor
- Wide ambient temperature range: 40C to 85C
- 10-contact 3 mm 3 mm 0.8 mm DFN package for space-constrained applications
Product Attributes
- Brand: Allegro MicroSystems
- Package: 10-Contact DFN (EJ)
- Lead Free: Yes
- Leadframe Plating: 100% matte-tin
Technical Specifications
| Characteristic | Model | Value | Unit |
|---|---|---|---|
| Supply Voltage | ALS31300 | 2.65 to 3.5 | V |
| I2C Compatibility | ALS31300 | 1 MHz down to 1.8 V | |
| Sleep ICC | ALS31300 | 14 (typ) | nA |
| Low-Power Duty Cycle Mode ICC | ALS31300 | 12 A to 2 mA (typ) | |
| Sensitivity Ranges | ALS31300EEJASR-500 | 500 G | |
| Sensitivity Ranges | ALS31300EEJASR-1000 | 1000 G | |
| Sensitivity Ranges | ALS31300EEJASR-2000 | 2000 G | |
| Joystick Mode Sensitivity | ALS31300EEJASR-JOY | X/Y: 1 LSB/G, Z: 0.25 LSB/G | |
| I2C Address (External Resistors) | ALS31300 | 16 unique | addresses |
| I2C Address (EEPROM) | ALS31300 | 127 unique | addresses |
| User EEPROM | ALS31300 | 78 bits | |
| Package Dimensions | ALS31300 | 3 mm 3 mm 0.8 mm | |
| Operating Ambient Temperature | ALS31300 | 40 to 85 | C |
| X/Y Channel Sensitivity (LSB/G) | ALS31300EEJASR-500 | 4 | LSB/G |
| Z Channel Sensitivity (LSB/G) | ALS31300EEJASR-500 | 4 | LSB/G |
| X/Y Channel Sensitivity (LSB/G) | ALS31300EEJASR-1000 | 2 | LSB/G |
| Z Channel Sensitivity (LSB/G) | ALS31300EEJASR-1000 | 2 | LSB/G |
| X/Y Channel Sensitivity (LSB/G) | ALS31300EEJASR-2000 | 1 | LSB/G |
| Z Channel Sensitivity (LSB/G) | ALS31300EEJASR-2000 | 1 | LSB/G |
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