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Allegro MicroSystems ALS31300EEJALU-2000
- Part No.:
- ALS31300EEJALU-2000
- Manufacturer:
- Allegro MicroSystems
- Category:
- Linear, Compass (ICs)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
ALS31300EEJALU-2000.pdf
- Description:
- SENSOR HALL EFFECT I2C 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,632
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Product details
Overview
ALS31300EEJALU-2000 from Allegro MicroSystems is a 3D linear Hall-effect position sensor IC delivering 12-bit digital X/Y/Z magnetic field outputs with ±2000 G full-scale range, 1 LSB/G sensitivity, and I²C interface. It operates from 2.65–3.5 V, draws 14 nA in sleep mode, and supports head-on linear motion, slide-by sensing, and rotation angle measurement in compact space-constrained systems.
For engineers reviewing the ALS31300EEJALU-2000 datasheet, ALS31300EEJALU-2000 pinout, ALS31300EEJALU-2000 application, or ALS31300EEJALU-2000 equivalent, key selection considerations include its factory-programmed ±2000 G range, 10-contact DFN (EJ) package, I²C address configurability (16 resistor-based or 127 EEPROM-based options), integrated temperature sensor, and low-power duty cycle mode enabling battery-operated portable designs.
Technical Context
The ALS31300EEJALU-2000 implements three independent Hall plates with 12-bit ADCs and configurable bandwidth selection (BW Select bits 23:21) to trade resolution for update rate-e.g., BW=0 yields 4 LSB/G noise on X/Y axes at highest resolution, while BW=7 maximizes speed. Its digital controller manages sleep, active, and low-power duty cycle modes via volatile register 0x27 bits 1:0.
It integrates an on-chip charge pump for EEPROM programming, 78 bits of user-accessible EEPROM across addresses 0x0D–0x0F, and interrupt logic with latching, signed/absolute threshold modes, and EEPROM-stored status flags-all accessible via I²C at up to 1 MHz (Fast Mode+).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±2000 G - Enables robust detection of large magnetic displacements without saturation in industrial linear actuators or heavy-duty joysticks. |
| Sensitivity | 1 LSB/G - Delivers 12-bit output resolution over full range; 2000 G × 1 LSB/G = 4096-count span matching native ADC depth. |
| Supply Voltage | 2.65–3.5 V - Compatible with single-cell Li-ion (3.0 V nominal) and regulated 3.3 V rails without level-shifting. |
| Sleep Current | 14 nA typical - Allows multi-year operation in energy-harvesting or coin-cell-powered IoT nodes with periodic wake-up. |
| I²C Speed | Up to 1 MHz - Supports high-throughput polling in real-time motion control loops with minimal bus overhead. |
| Operating Temp | –40°C to +85°C - Qualified for automotive cabin, industrial HMI, and outdoor equipment environments. |
| Package | 3 mm × 3 mm × 0.8 mm DFN (EJ) - Enables placement under mechanical overlays or within tight PCB stack-ups for slim consumer devices. |
Pinout & Package
ALS31300EEJALU-2000 is supplied in a lead-free, 10-contact DFN package (EJ) with 100% matte-tin leadframe plating and exposed thermal pad (not internally connected). The package measures 3 mm × 3 mm × 0.8 mm and is optimized for high-density, low-profile PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Must be bypassed to GND with 0.1 µF capacitor; powers all internal circuitry including Hall plates, ADC, and I²C interface. |
| ADR0 / ADR1 | I²C address select inputs | Resistive divider inputs enabling 16 unique hardware addresses; voltage thresholds define 4-level encoding (0–3) per pin. |
| GND | Ground reference | Primary return path for supply current and sensor signal references; connects to PCB ground plane. |
| INT | Open-drain interrupt output | Asserts when magnetic field crosses programmed X/Y/Z thresholds; supports latched or edge-triggered behavior via EEPROM config. |
| SDA / SCL | I²C bidirectional data/clock | Compliant with Fast Mode+ (1 MHz); supports 1.8 V or 3.0 V logic thresholds selected via EEPROM bit 9. |
| NC (Pins 5,9,10) | No-connect terminals | Internally unconnected; must be tied to GND for mechanical stability and EMI reduction. |
| PAD | Exposed thermal pad | Not electrically connected; soldered to PCB copper for thermal dissipation and mechanical anchoring. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed sensitivity accuracy | ±1% typical - Reduces system-level calibration effort in production test for medical or industrial position feedback. |
| Configurable low-power duty cycle mode | Average current from 2 mA to 12 µA - Enables adaptive power scaling in wearable controllers where motion burst frequency varies. |
| Integrated temperature sensor | 12-bit output, ±1.5°C accuracy - Compensates magnetic offset drift in real time without external sensors or firmware lookup tables. |
| User EEPROM storage | 78 bits across 0x0D–0x0F - Stores device-specific calibration coefficients, serial numbers, or configuration state across power cycles. |
| Back-bias magnet support (joystick mode) | Z-axis gain reduced to 0.25 LSB/G - Enables springless return-to-zero force in gaming controllers using rear-mounted magnets. |
Applications
| Industrial Linear Actuator Feedback | Gaming Joystick Position Sensing |
|---|---|
Use Scenario: Monitoring piston extension in hydraulic cylinders or valve stem travel in process control systems. IC Role / Device Role / Timing Role: 3D Hall-effect sensor providing absolute X/Y/Z field measurements converted to linear displacement via calibrated magnet geometry. Use Value: ±2000 G range accommodates large air gaps and strong industrial magnets; 14 nA sleep current extends battery life in wireless diagnostic tools. | Use Scenario: Detecting X/Y tilt and Z-axis push/crouch motion in console or PC gaming controllers. IC Role / Device Role / Timing Role: Joystick-mode sensor with reduced Z-axis gain (0.25 LSB/G) enabling precise crouch detection using back-bias magnet return force. Use Value: Eliminates mechanical springs and contact wear; I²C interface simplifies MCU integration versus analog potentiometer solutions. |
| Automotive Cabin Control Panel | Portable Medical Device Position Interface |
Use Scenario: Touchless slider or rotary encoder replacement for HVAC or infotainment controls behind glass or plastic overlays. IC Role / Device Role / Timing Role: Head-on linear motion sensor detecting magnet displacement beneath non-metallic surfaces with sub-millimeter resolution. Use Value: 3 mm × 3 mm DFN fits behind thin bezels; –40°C to +85°C rating ensures reliability across vehicle cabin temperatures. | Use Scenario: Low-power position feedback in handheld ultrasound probes or insulin pens requiring multi-year battery life. IC Role / Device Role / Timing Role: Ultra-low-current magnetic sensor updating only on motion events via interrupt-driven wake-up from 14 nA sleep mode. Use Value: Sleep current 100× lower than comparable sensors enables >5-year operation on CR2032 cells in intermittent-use medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3D Hall-effect position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE5012BE1000 | 24-bit Biss-C/SPI interface; ±1000 G range; no integrated EEPROM; higher ICC(active) = 4.5 mA | Targeted at automotive steering angle with ASIL-B compliance; lacks I²C and user EEPROM | Choose TLE5012BE1000 only if SPI/Biss-C is required and ASIL-B functional safety is mandated. |
| MLX90393ELW-ABA-000-TU | 16-bit triaxis output; ±2500 G range; I²C + SPI; 256-byte EEPROM; ICC(sleep) = 1.2 µA (100× higher than ALS31300) | Optimized for high-precision angular position; includes built-in elliptical correction; larger 5 mm × 5 mm SOIC package | Choose MLX90393ELW-ABA-000-TU when higher resolution or dual-interface flexibility outweighs size and ultra-low sleep current requirements. |
Compared with TLE5012BE1000 and MLX90393ELW-ABA-000-TU, the ALS31300EEJALU-2000 uniquely balances ultra-low sleep current (14 nA), compact 3 mm × 3 mm DFN packaging, factory-configured ±2000 G range, and 78-bit user EEPROM-all within a standard I²C interface, making it optimal for cost-sensitive, space-constrained, battery-powered 3D position sensing.
Availability
ALS31300EEJALU-2000 is available at Aetrix Electronics and suitable for industrial linear actuator feedback, gaming joystick position sensing, automotive cabin control panels, and portable medical device position interfaces requiring stable component supply across long production lifecycles.
Supply support for ALS31300EEJALU-2000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Allegro MicroSystems is a U.S.-based semiconductor company specializing in magnetic sensing, power ICs, and motor driver solutions for automotive, industrial, and consumer markets.
The ALS31300 product line delivers high-accuracy, low-power 3D Hall-effect position sensing for motion control, human-machine interfaces, and battery-operated devices where miniaturization and energy efficiency are critical.
FAQ
What is the full-scale magnetic range configured for ALS31300EEJALU-2000?
The ALS31300EEJALU-2000 is factory-programmed for a ±2000 G full-scale sensing range, delivering 1 LSB/G sensitivity. This range is fixed for this variant and cannot be reconfigured in-system; it is optimized for applications requiring wide dynamic range such as industrial linear actuators or heavy-duty joysticks where large magnetic displacements occur.
How does the ALS31300EEJALU-2000 achieve ultra-low sleep current?
The ALS31300EEJALU-2000 achieves 14 nA typical sleep current by disabling all Hall plate biasing, ADC conversion, and digital logic except the I²C slave interface and wake-up circuitry. In Sleep Mode (register 0x27 bits 1:0 = 1), the device remains responsive to I²C commands but halts magnetic and temperature data updates until explicitly woken-enabling multi-year operation in battery-powered nodes.
Can the I²C address of ALS31300EEJALU-2000 be changed after soldering?
Yes, the I²C address of ALS31300EEJALU-2000 can be reprogrammed post-soldering via its on-chip EEPROM. While external resistors on ADR0/ADR1 provide 16 hardware addresses, the device supports 127 unique software-configurable addresses stored in EEPROM register 0x02 bits 16:10-allowing dynamic address assignment in-system without hardware modification.
Does ALS31300EEJALU-2000 include an integrated temperature sensor?
Yes, ALS31300EEJALU-2000 includes an integrated 12-bit temperature sensor with output accessible via registers 0x28 (MSBs) and 0x29 (LSBs). Temperature data updates every 8 ms in active mode and once per 10 low-power cycles in LPDCM. It provides real-time junction temperature monitoring for magnetic offset compensation and thermal derating decisions.
What package type and dimensions does ALS31300EEJALU-2000 use?
ALS31300EEJALU-2000 uses a 10-contact DFN package designated "EJ", measuring 3 mm × 3 mm × 0.8 mm with an exposed thermal pad. It is lead-free and features 100% matte-tin leadframe plating. Pin 1 is marked by a dot; pins 5, 9, and 10 are NC and must be grounded for mechanical stability and EMI control.
ALS31300EEJALU-2000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- X, Y, Z
- Output Type:
- I2C
- Sensing Range:
- -
- Voltage - Supply:
- 2.65V ~ 3.5V
- Current - Supply (Max):
- 6.7mA
- Current - Output (Max):
- -
- Resolution:
- 12 b
- Bandwidth:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
ALS31300EEJALU-2000 FAQ
1.How can I place an order for ALS31300EEJALU-2000 through Aetrix?
Please submit a Request for Quotation (RFQ) for ALS31300EEJALU-2000 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ALS31300EEJALU-2000 reliable?
The price and inventory of ALS31300EEJALU-2000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ALS31300EEJALU-2000 is usually 5 days.
3.What payment methods are accepted for ALS31300EEJALU-2000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ALS31300EEJALU-2000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ALS31300EEJALU-2000?
ALS31300EEJALU-2000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ALS31300EEJALU-2000 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ALS31300EEJALU-2000?
For technical support, including ALS31300EEJALU-2000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ALS31300EEJALU-2000 requirements.
6.How does Aetrix verify that ALS31300EEJALU-2000 is sourced from the original manufacturer or authorized distributors?
All ALS31300EEJALU-2000 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ALS31300EEJALU-2000 meets industry standards.
7.What is the process for return or replacement of ALS31300EEJALU-2000?
All ALS31300EEJALU-2000 units undergo pre-shipment inspection (PSI). If there is an issue with ALS31300EEJALU-2000, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ALS31300EEJALU-2000 part is unused and in its original packaging.
Return procedure for ALS31300EEJALU-2000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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