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ALS31313 bảng dữ liệu(PDF) 1 Page - Allegro MicroSystems |
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ALS31313 bảng dữ liệu(HTML) 1 Page - Allegro MicroSystems |
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1 / 25 page  TheALS31313three-axislinearHall-effectsensorICprovides a 12-bit digital value corresponding to the magnetic field measured in each of the X, Y, and Z axes. The ALS31313 is preconfigured for use in 3D sensing applications for head-on linear motion, slide-by position sensing, and rotation angle measurements.TheALS31313isalsoofferedinjoystickmode, 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 theALS31313 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 ALS31313 also includes 78 bits of user EEPROM. Power management of the ALS31313 is highly configurable, allowing for system-level optimization of supply current and performance. Sleep mode consumes just 14 nA (typical), makingtheALS31313wellsuitedforportable,battery-operated applications. The ALS31313 is supplied in an 8-pin TSSOP. The package is lead (Pb) free with 100% matte-tin leadframe plating. ALS31313-DS, Rev. 2 MCO-0000394 • AEC-Q100 automotive qualification pending • Senses magnetic fields in X, Y, and Z axes • Z-axis sensing of “crouch” or push button motion • Capable of operating with back-bias magnets • Ideal for battery-powered, low-voltage applications □ 2.65 to 3.5 V single supply operation □ 1 MHz I2C compatibility down to 1.8 V □ 14 nA (typ) Sleep ICC □ 12 µA to 2 mA ICC (typ) in low-power duty cycle mode • Industry standard I2C interface for easy system integration □ Up to 1 MHz (Fast Mode+) I2C communication □ 16 selectable addresses via external resistor divider □ 127 available address configurable via EEPROM • On-chip EEPROM □ Stores factory- and user-configured settings □ 78 bits of user EEPROM for additional storage □ On-chip charge pump for easy programming Automotive Grade, 3-D Linear Hall-Effect Sensor with I2C Output and Advanced Low Power Management PACKAGE: Figure 1: Functional Block Diagram Not to scale ALS31313 Continued on next page... FEATURES AND BENEFITS DESCRIPTION May 2, 2018 VCC SDA SCL ADR0 ADR1 INT GND Z Y X MUX ADC Power Controller Temp Sensor I2C Serial Interface Slave Address ADC Digital Controller Charge Pump EEPROM Memory Hall Elements Z X Y 8-Pin TSSOP (LE) |
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