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STMicroelectronics LIS3L02AL
- Part No.:
- LIS3L02AL
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 8-LLGA
- Datasheet:
-
LIS3L02AL.pdf
- Description:
- ACCELEROMETER 2G ANALOG 8LGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
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Product details
Overview
LIS3L02AL from STMicroelectronics is a 3-axis analog-output MEMS capacitive accelerometer with ±2g full-scale range, 0.5 mg resolution over 100 Hz bandwidth, ratiometric output (Vdd/5 V/g sensitivity, Vdd/2 zero-g level), and embedded self-test functionality-designed for motion sensing in compact portable electronics.
For engineers reviewing the LIS3L02AL datasheet, LIS3L02AL pinout, LIS3L02AL application, or LIS3L02AL equivalent, this page delivers verified mechanical and electrical specifications, LGA-8 package layout, real-world use scenarios in mobile and robotics systems, and validated alternative parts with documented functional trade-offs.
Technical Context
The LIS3L02AL integrates a surface-micromachined silicon sensing element with a fully differential CMOS interface featuring Correlated Double Sampling (CDS) to suppress offset and 1/f noise. Each axis uses a dedicated sample-and-hold stage operating at 66 kHz sampling frequency.
Output signals are single-ended analog voltages (Voutx/Vouty/Voutz), ratiometric to Vdd (2.4–3.6 V), with 110 kΩ nominal output impedance enabling simple RC low-pass filtering. Self-test activation via ST pin applies electrostatic force, inducing defined DC voltage shifts (±50 mV typical per axis at 3.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±2 g - Enables detection of tilt, vibration, and impact events within consumer-grade motion sensing limits. |
| Resolution | 0.5 mg over 100 Hz bandwidth - Supports precise static tilt measurement (e.g., <0.03° resolution at 1 g) without oversampling. |
| Sensitivity | Vdd/5 V/g (e.g., 0.66 V/g at 3.3 V) - Ratiometric scaling simplifies ADC reference alignment and eliminates supply-dependent gain calibration. |
| Zero-g Level | Vdd/2 ±6% (e.g., 1.65 V ±0.1 V at 3.3 V) - Matches mid-supply ADC reference for optimal dynamic range utilization. |
| Supply Current | 0.85–1.5 mA - Enables battery-powered operation in handheld devices with multi-day runtime at 3 V. |
| Bandwidth | 1.5 kHz native; adjustable down to 1 Hz via external capacitor - Allows anti-aliasing filter tuning per application (e.g., 20 Hz for gesture recognition). |
| Shock Survivability | 10,000 g / 0.1 ms - Withstands drop impacts and mechanical handling stress during assembly and end-use. |
Pinout & Package
Package: LGA-8 (5 mm × 5 mm × 1.6 mm), ECOPACK® lead-free, RoHS-compliant, land grid array with exposed pad (non-electrical). Pin 1 indicator electrically tied to ST pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ST | Self-test control input | Logic high (≥0.7×Vdd) activates electrostatic test force; logic low (≤0.3×Vdd) enables normal operation. |
| 2 Voutz | Z-axis analog output | Single-ended voltage proportional to acceleration along Z-axis; requires ≥1 nF load capacitance for stable filtering. |
| 3 GND | Ground reference | 0 V return for supply and signal paths; must be low-impedance connection to minimize noise coupling. |
| 4 Reserved | No-connect terminal | Internally unconnected; must be left floating-no pull-up/down or routing allowed. |
| 5 Reserved | No-connect terminal | Internally unconnected; must be left floating-no pull-up/down or routing allowed. |
| 6 Vouty | Y-axis analog output | Single-ended voltage proportional to acceleration along Y-axis; shares same output impedance (80–140 kΩ) as other channels. |
| 7 Voutx | X-axis analog output | Single-ended voltage proportional to acceleration along X-axis; ratiometric to Vdd with identical sensitivity tolerance as Y/Z. |
| 8 Vdd | Power supply input | 2.4–3.6 V analog/digital supply; requires local 100 nF + 10 µF decoupling per ST recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded self-test | Validates mechanical integrity and signal chain continuity via controlled electrostatic actuation-no external test equipment required. |
| Ratiometric output | Zero-g level and sensitivity scale linearly with Vdd, eliminating need for independent voltage references in ADC-based systems. |
| Factory-trimmed calibration | Non-volatile trimming of sensitivity and zero-g offset enables plug-and-play operation without user calibration. |
| Low-noise CDS architecture | Correlated Double Sampling reduces 1/f noise and offset drift, achieving 50 µg/√Hz noise density at 25°C. |
| High shock survivability | Rated for 10,000 g mechanical shock (0.1 ms pulse), ensuring reliability in portable devices subject to drops and impacts. |
Applications
| Mobile Device Tilt Sensing | Gaming Motion Input |
|---|---|
|
Use Scenario: Detecting portrait/landscape orientation changes in smartphones and tablets to rotate UI elements. IC Role / Device Role / Timing Role: Analog 3-axis acceleration sensor providing DC-coupled tilt vector data sampled at ≥100 Hz. Use Value: 0.5 mg resolution enables sub-degree tilt accuracy; ratiometric output ensures consistent performance across battery voltage decay. |
Use Scenario: Translating handheld controller movement into in-game character motion or camera control. IC Role / Device Role / Timing Role: Low-latency analog motion transducer feeding into microcontroller ADC with ≤1.5 kHz bandwidth. Use Value: Embedded self-test confirms sensor health before gameplay; 10,000 g shock rating withstands aggressive user handling. |
| Free-Fall Data Protection | Robotics Joint Monitoring |
|
Use Scenario: Triggering hard disk head parking when laptop detects free-fall acceleration (<0.2 g threshold over 10–20 ms). IC Role / Device Role / Timing Role: High-reliability inertial monitor generating analog voltage thresholds for comparator-based interrupt generation. Use Value: Factory-calibrated zero-g level (±6% Vdd/2) ensures repeatable trigger point; -40°C to +85°C operation covers extended environmental use. |
Use Scenario: Measuring gravitational vector relative to robotic arm segments to estimate joint angle and stability. IC Role / Device Role / Timing Role: Precision static acceleration reference for real-time kinematic feedback in servo-controlled joints. Use Value: 0.5 mg resolution supports <0.03° angular resolution; LGA-8 footprint enables dense PCB placement near motor drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL335 | Wider supply range (1.8–3.6 V), higher noise floor (300 µg/√Hz), no embedded self-test. | Lacks factory calibration; requires external trimming for zero-g/sensitivity matching. | Preferred where ultra-low power (<350 µA) is critical and self-test is non-essential. |
| LIS331DLH | Digital I²C/SPI output, ±2g/±4g/±8g selectable range, 10-bit resolution, integrated FIFO. | Requires microcontroller with digital interface support; adds firmware complexity but enables on-chip features. | Chosen when system already uses digital sensors and benefits from configurable ODR, interrupts, or motion detection. |
Compared with ADXL335 and LIS331DLH, the LIS3L02AL uniquely combines analog simplicity, factory-trimmed ratiometric outputs, and embedded self-test in an LGA-8 package-making it optimal for cost-sensitive, analog-input MCU designs requiring guaranteed turnkey accuracy and mechanical validation.
Availability
LIS3L02AL is available at Aetrix Electronics and suitable for mobile terminals, gaming peripherals, and robotics systems requiring stable component supply across extended temperature ranges (-40°C to +85°C) and long-lifecycle production.
Supply support for LIS3L02AL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in MEMS, power management, microcontrollers, and automotive ICs.
The LIS3L02AL belongs to ST's legacy analog-output MEMS accelerometer family, engineered for ultra-compact motion sensing in battery-powered consumer electronics where analog interface simplicity and mechanical robustness are prioritized.
FAQ
What is the recommended external capacitor value for 100 Hz bandwidth filtering?
Using the formula ft = 1.45 µF / Cload, a 15 nF capacitor yields ~97 Hz cutoff-matching the 100 Hz bandwidth specification. ST recommends ceramic capacitors ≥1 nF placed directly at each Vout pin with short traces to minimize parasitic inductance and ensure stable low-pass response.
How does the self-test function verify sensor integrity?
The ST pin activates electrostatic actuation of the proof mass, inducing predictable DC voltage shifts: ±50 mV typical per axis at 3.3 V. Measuring these shifts confirms both mechanical mobility of the MEMS structure and correct operation of the analog signal chain-including amplifier gain, offset, and output buffer.
Can LIS3L02AL operate reliably below 2.4 V supply?
No-absolute maximum ratings specify Vdd minimum as 2.4 V. Operation below this violates design specifications: sensitivity and zero-g level become non-ratiometric, self-test amplitude drops nonlinearly (cubic dependence), and output impedance rises unpredictably, risking ADC measurement errors.
Why are pins 4 and 5 labeled "Reserved" and not grounded?
Pins 4 and 5 are internally unconnected die pads. ST explicitly mandates leaving them floating-grounding or biasing may cause unpredictable leakage paths, parasitic coupling, or ESD vulnerability. The LGA-8 mechanical drawing confirms no internal bond wire or circuit connection to these terminals.
LIS3L02AL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-LLGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y, Z
- Acceleration Range:
- ±2g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 660
- Bandwidth:
- 1.5kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.4V ~ 3.6V
- Features:
- Adjustable Bandwidth
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LGA
LIS3L02AL FAQ
1.How can I place an order for LIS3L02AL through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS3L02AL 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 LIS3L02AL reliable?
The price and inventory of LIS3L02AL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS3L02AL is usually 5 days.
3.What payment methods are accepted for LIS3L02AL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS3L02AL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS3L02AL?
LIS3L02AL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS3L02AL 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 LIS3L02AL?
For technical support, including LIS3L02AL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS3L02AL requirements.
6.How does Aetrix verify that LIS3L02AL is sourced from the original manufacturer or authorized distributors?
All LIS3L02AL 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 LIS3L02AL meets industry standards.
7.What is the process for return or replacement of LIS3L02AL?
All LIS3L02AL units undergo pre-shipment inspection (PSI). If there is an issue with LIS3L02AL, 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 LIS3L02AL part is unused and in its original packaging.
Return procedure for LIS3L02AL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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