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Specifications
Current - Supply:
3.8mA
Magnetic Sensing Range(X,Y):
±140mT
Interface:
I2C
Operating Temperature:
-40℃~+85℃
Voltage - Supply:
2.65V~3.6V
Magnetic Sensing Range(Z):
±140mT
Mfr. Part #:
A31301EEJASR-XYZ-IC-14
Package:
DFN-10-EP(3x3)
Key Attributes
Model Number:
A31301EEJASR-XYZ-IC-14
Product Description
3D Linear Hall-Effect Sensor with SPI, I2C Interfaces, and Advanced Low-Power Management
The A31301 is a versatile three-axis Hall-effect sensor IC designed for precise magnetic flux density measurement across any 1, 2, or 3 axes, and can calculate angles in user-defined planes. It offers flexibility with preconfigured SPI or I2C digital interfaces, high-speed operation up to 10 MHz (SPI) and 1 MHz (I2C), and configurable power management for system-level optimization. Its low leakage sleep current makes it ideal for portable, battery-operated applications. The sensor is supplied in a compact 3 mm 3 mm 0.8 mm, 10-contact DFN package.
Key Features and Benefits:
- Measures magnetic flux density in 1, 2, or 3 axes.
- Calculates 15-bit angle output from any selectable 2-axes plane.
- Low RMS angle noise for high system resolution.
- Supports SPI (up to 10 MHz) and I2C (up to 1 MHz) interfaces.
- Ideal for battery-powered, low-voltage applications (2.65 to 3.6 V analog supply).
- Low leakage sleep current and low-power duty cycle mode options.
- Flexible multifunction pin for interrupt and sample-start functionality.
- On-chip EEPROM for storing configuration settings.
- Low-profile 3 mm 3 mm DFN package for space-constrained designs.
- Operates across a wide temperature range: 40C to 85C.
Applications:
- Camera gimbals
- Gamepad joysticks
- Motor control feedback
- RC autonomous vehicles
- Robotic position sensing
- Industrial motor control
Product Attributes:
- Brand: Allegro MicroSystems
- Package: 10-Contact DFN (EJ)
- Package Material: Lead (Pb) free, 100% matte-tin leadframe plating
Technical Specifications:
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Electrical Characteristics | ||||||
| Supply Voltage | VCC | Normal operation | 2.65 | 3.0 | 3.6 | V |
| Digital Supply Voltage | VCC_IO | VCC_IO VCC | 1.7 | - | VCC | V |
| Active Supply Current | ICC(ACTIVE) | Active state | - | 3.8 | 4.75 | mA |
| Sleep Supply Current | ICC(SLEEP) | VCC = 3.0 V, OP_MODE = 3, 4 | - | 2.5 | - | A |
| Power-On Reset | VPOR | Minimum VCC before turn-on | - | 2.51 | - | V |
| I2C Interface Characteristics | ||||||
| Clock Frequency (SCL Pin) | fCLK | - | - | 400 | 1000 | kHz |
| Logic Input Low Level | VI(L) | I2C_THRESH_SEL = 1; 1.8 V Compatible Mode | - | - | 0.54 | V |
| Logic Input High Level | VI(H) | I2C_THRESH_SEL = 1; 1.8 V Compatible Mode | 1.26 | - | - | V |
| SPI Interface Characteristics | ||||||
| SPI Clock Frequency | fSPI | - | 0.1 | - | 10 | MHz |
| Digital Input High Voltage | VIH | MOSI, SCLK, CSN pins | 0.65 | - | 1 VCC_IO | V |
| Digital Input Low Voltage | VIL | MOSI, SCLK, CSN pins | - | - | 0.35 VCC_IO | V |
| Performance Characteristics (600 G Device) | ||||||
| Optimized Sensing Range | BIN | - | - | 600 | - | G |
| Sensitivity | SENS | - | - | 26.8 | - | LSB/G |
| Offset Error X/Y Axes | EOFF(XY) | BIN = 0 G | -6 | - | 6 | G |
| Sensitivity Error X/Y Axes | ESENS(XY) | BIN = BIN(MAX) | -2.5 | - | 2.5 | % |
| RMS Noise X/Y Channels | NRMS(XY) | BW Select = 0 | - | 0.100 | - | G |
| Performance Characteristics (1400 G Device) | ||||||
| Optimized Sensing Range | BIN | - | - | 1400 | - | G |
| Sensitivity | SENS | - | - | 11.47 | - | LSB/G |
| Sensitivity Error X/Y Axes | ESENS(XY) | BIN = BIN(MAX) | -2.5 | - | 2.5 | % |
| RMS Noise X/Y Channels | NRMS(XY) | BW Select = 0 | - | 0.13 | - | G |
| Performance Characteristics (2000 G Device) | ||||||
| Optimized Sensing Range | BIN | - | - | 2000 | - | G |
| Sensitivity | SENS | - | - | 8.03 | - | LSB/G |
| Sensitivity Error X/Y Axes | ESENS(XY) | BIN = BIN(MAX) | -2.5 | - | 2.5 | % |
| RMS Noise X/Y Channels | NRMS(XY) | BW Select = 0 | - | 0.14 | - | G |
| Package Dimensions | ||||||
| Package Type | - | - | - | - | - | 10-Contact DFN (EJ) |
| Package Dimensions | - | - | - | - | - | 3 mm 3 mm 0.8 mm |
| Operating Temperature | TA | - | 40 | - | 85 | C |
Selection Guide:
| Part Number | Default Interface | Supported Field Range (G) (Typ.) | Packing |
|---|---|---|---|
| A31301EEJASR-XYZ-IC-06 | I2C | 600 | 6000 pieces per 13-inch reel |
| A31301EEJASR-XYZ-IC-14 | I2C | 1400 | 6000 pieces per 13-inch reel |
| A31301EEJASR-XYZ-IC-20 | I2C | 2000 | 6000 pieces per 13-inch reel |
| A31301EEJASR-XYZ-SI-06 | SPI | 600 | 6000 pieces per 13-inch reel |
| A31301EEJASR-XYZ-SI-14 | SPI | 1400 | 6000 pieces per 13-inch reel |
| A31301EEJASR-XYZ-SI-20 | SPI | 2000 | 6000 pieces per 13-inch reel |
2504101957_ALLEGRO-A31301EEJASR-XYZ-IC-14_C22405911.pdf
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