Hall-Effect Sensor. ALS31300 Datasheet

ALS31300 Sensor. Datasheet pdf. Equivalent

ALS31300 Datasheet
Recommendation ALS31300 Datasheet
Part ALS31300
Description 3-D Linear Hall-Effect Sensor
Feature ALS31300; ALS31300 3-D Linear Hall-Effect Sensor with I2C Output and Advanced Low Power Management FEATURES A.
Manufacture Allegro
Datasheet
Download ALS31300 Datasheet




Allegro ALS31300
ALS31300
3-D Linear Hall-Effect Sensor with I2C Output
and Advanced Low Power Management
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
□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
Continued on next page...
PACKAGE: 10-Contact DFN (EJ)
Pin 1 Z
Y
Not to scale
X
DESCRIPTION
TheALS31300 three-axis linear Hall-effect sensor IC provides
a 12-bit digital value corresponding to the magnetic field
measured in each of the X, Y, and Z axes. The ALS31300 is
preconfigured for use in 3D sensing applications for head-on
linear motion, slide-by position sensing, and rotation angle
measurements. TheALS31300 is also offered in joystick mode,
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 the ALS31300 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 optimization of supply current and
performance. Sleep mode consumes just 14 nA (typical),
making theALS31300 well suited for portable, battery-operated
applications.
The ALS31300 is supplied in a 3 mm × 3 mm × 0.8 mm,
10-contact DFN package (“EJ”). This small footprint package
is lead (Pb) free, with 100 % matte-tin leadframe plating.
VCC
Power
Controller
Temp
Sensor
I2C Serial
Interface
ALS31300-DS, Rev. 7
MCO-0000228
ZY
X
Hall
Elements
MUX
ADC
Digital
Controller
Charge
Pump
EEPROM
Memory
Slave
Address
ADC
GND
Figure 1: Functional Block Diagram
SDA
SCL
ADR0
ADR1
INT
March 12, 2019



Allegro ALS31300
ALS31300
3-D Linear Hall-Effect Sensor with I2C Output
and Advanced Low Power Management
FEATURES AND BENEFITS (continued)
• Flexible 12-bit ADC with 10-bit ENOB (Effective Number of Bits)
• 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 85°C
• 10-contact 3 mm × 3 mm × 0.8 mm DFN package for
implementation in low-profile, high-density PCB designs and
space-constrained applications
SELECTION GUIDE
Part Number
ALS31300EEJASR-500
ALS31300EEJASR-1000
ALS31300EEJASR-2000
ALS31300EEJASR-JOY [3]
X/Y Channel Sensitivity
(LSB/G) [1]
4
2
1
1
Z Channel Sensitivity
(LSB/G) [1]
4
2
1
0.25
[1] 1 gauss (G) = 0.1 millitesla (mT).
[2] Contact Allegro™ for alternate packing options.
[3] Joystick devices have reduced gain on the Z axis to accommodate back bias magnets.
Packing [2]
6000 pieces per 13-inch reel
NAMING SPECIFICATION
ALS31300EEJASR-500
Factory Configuration: 500 = 500 gauss
Packing Option: SR = 6000 pieces per 13-inch reel
Package Type: EJA = 10-contact DFN
Operating Temperature Range (TA ): E = –40°C to 85°C
Allegro Linear Sensor 5-digit part number
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2



Allegro ALS31300
ALS31300
3-D Linear Hall-Effect Sensor with I2C Output
and Advanced Low Power Management
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Forward Supply Voltage
Reverse Supply Voltage
All Other Pins Forward Voltage
All Other Pins Reverse Voltage
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature [1]
EEPROM Write Count
VCC
VRCC
VIN
VR
TA
TJ(MAX)
Tstg
Notes
Range E
Number of times EEPROM can be written
Rating
5.5
–0.1
5.5
–0.1
–40 to 85
165
–65 to 170
1000
Unit
V
V
V
V
°C
°C
°C
writes
[1] Stresses beyond the Absolute Maximum Ratings may result in permanent device damage. Exposure to absolute maximum rating conditions for
extended periods of time may affect device reliability.
THERMAL CHARACTERISTICS [2]
Characteristic
Symbol
Package Thermal Resistance [3]
RθJA
Test Conditions
Measured on 2-layer board with copper limited to the solder pads and
0.88 in.2 of copper on each side
[2] Thermal characteristics may require derating at maximum conditions. See application section for more information.
[3] Additional thermal information available on the Allegro website.
Value Unit
65 °C/W
VCC
10 kΩ
10 kΩ
VCC
Customer
Microcontroller
VCC
10 kΩ
SCL VCC
SDA ADR0
ALS31300
ADR1
GND
CBYPASS
0.1 µF
INT
Figure 2: Typical Application
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
3







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)