Quality Standards and Environmental Certifications

ALS31313: Automotive Grade, 3D Magnetic Linear Hall-Effect Sensor with I2C Output and Advanced Low Power Management

ALS31313 Datasheet

Navigate

Availability
Packaging
Design Support Tools

Description

Top Features

The ALS31313 3DMAG™ position sensor provides 12-bit digital output words that are proportional to the strength of the field present in each of the X, Y, and Z axes. The quiescent output value (zero magnetic field applied) is at mid-scale. The ALS31313 is available preconfigured for use in joystick mode that includes crouch capability or single-ended X, Y, and Z mode.

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.

The ALS31313 incorporates I²C interface for easy integration into a wide variety of applications. 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 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), making the ALS31313 well suited for portable, battery-operated applications.

The ALS31313 is supplied in an 8-pin TSSOP. The package is lead (Pb) free with 100% matte-tin leadframe plating.

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 I_CC
- 12 μA to 2 mA I_CC (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
Flexible 12-bit ADC with 10-bit ENOB (Effective Number of Bits)
Single-Ended Mode (X, Y, and Z axes): enables one to three axes
Differential Mode (X and Y axes): enables slide-by linear sensing
Common Mode (X and Y axes): enables joystick operation
1% (typ) accurate factory-trimmed sensitivity options (±500 G, ±1000 G, and ±2000 G full-scale input)
Integrated temperature sensor
Wide ambient temperature range: –40°C to 125°C

Part Number Specifications and Availability

Part Number	Package Type	Temperature	RoHS Compliant	Part Composition / RoHS Data	Samples	Check Stock
ASEK-31313KLEA-1000	DEMO BOARD	-20°C to 85°C	No	--	Contact your local sales rep	Check Distributor Stock
ASEK-31313KLEA-2000	DEMO BOARD	-20°C to 85°C	No	--	Contact your local sales rep	Check Distributor Stock
ASEK-31313KLEA-500	DEMO BOARD	-20°C to 85°C	No	--	Contact your local sales rep	Check Distributor Stock
ASEK-31313KLEA-JOY	DEMO BOARD	-20°C to 85°C	No	--	Contact your local sales rep	Check Distributor Stock
ALS31313KLEATR-1000	8-lead TSSOP	-40°C to 125°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock
ALS31313KLEATR-2000	8-lead TSSOP	-40°C to 125°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock
ALS31313KLEATR-500	8-lead TSSOP	-40°C to 125°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock
ALS31313KLEATR-JOY	8-lead TSSOP	-40°C to 125°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Packaging

The ALS31313 is supplied in an 8-pin TSSOP. The package is lead (Pb) free with 100% matte-tin leadframe plating.

LE Package Documentation

Design Support Tools

ALS31313 Software

Application Notes

Advanced Power Management Using the ALS31300 and ALS31313 3D Hall-Effect Sensor ICs with I2C Output

3D Linear or 2D Angle Sensing with the ALS31300 and ALS31313 Hall-Effect ICs

Product and Technology Overview

3DMAG: All Angles Covered (PDF)