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Home > Products > Sensors, Transducers > Motion Sensors > Accelerometers

STMicroelectronics LIS3L02AQ-TR

Name: LIS3L02AQ-TR
Brand: STMicroelectronics
SKU: LIS3L02AQ-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LIS3L02AQ-TR

Manufacturer:: STMicroelectronics

Category:: Accelerometers

Package:: 44-QFN

Datasheet:: LIS3L02AQ-TR.pdf

Description:: ACCELEROMETER 2-6G ANALOG 44QFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,699

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Product details

Overview

LIS3L02AQ from STMicroelectronics is a low-power, analog-output 3-axis linear accelerometer with user-selectable ±2g/±6g full-scale range, 0.5 mg resolution over 100 Hz bandwidth, ratiometric output voltage (Voutx/Vouty/Voutz), and embedded self-test functionality. It operates from 2.4 V to 3.6 V, delivers factory-trimmed offset and sensitivity, and is specified for -40°C to +85°C in consumer and industrial motion-sensing applications.

For engineers reviewing the LIS3L02AQ datasheet, LIS3L02AQ pinout, LIS3L02AQ application, or LIS3L02AQ equivalent, key selection criteria include its QFN-44 package footprint, analog ratiometric scaling, axis-specific bandwidth (4.0 kHz X/Y, 2.5 kHz Z), self-test logic interface (ST pin), and power-down control (PD pin) - all critical for motion-activated UI, free-fall detection, and inertial navigation subsystems.

Technical Context

The LIS3L02AQ integrates a THELMA-process silicon MEMS sensing element with a CMOS interface IC featuring correlated double sampling (CDS), three independent sample-and-hold (S&H) circuits, and fully differential signal processing. Its analog outputs are ratiometric to Vdd, enabling supply-independent measurement accuracy across the 2.4–3.6 V range.

It supports configurable operation via digital control pins: FS selects full-scale (0 = ±2g, 1 = ±6g), ST initiates self-test (logic high), and PD enables power-down mode (logic high). Bandwidth is externally adjustable using load capacitance on each output, with typical Rout = 110 kΩ and Cload ≤ 320 pF.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.4 V to 3.6 V - defines minimum system rail compatibility and enables direct connection to 3.3 V logic domains without regulation.
Full-Scale Range	±2g or ±6g (FS pin-controlled) - determines dynamic range trade-off between resolution and shock tolerance in motion detection.
Resolution	0.5 mg over 100 Hz BW - enables precise tilt and low-g vibration detection in handheld and appliance control systems.
Output Type	Ratiometric analog voltage (Voutx/y/z) - eliminates need for external reference during ADC conversion when sharing Vdd with converter.
Bandwidth	X/Y: 4.0 kHz max; Z: 2.5 kHz max - sets upper limit for real-time acceleration tracking in gaming input or robotics feedback loops.
Self-Test Function	Digital ST pin triggers measurable ΔVout (±20–50 mV) - allows in-system functional verification without mechanical stimulus.
Power Consumption	1.5 mA active; 5 µA power-down - supports battery-operated devices requiring periodic wake-up and low-duty-cycle sensing.

Pinout & Package

Package: QFN-44 (7 mm × 7 mm × 1.8 mm, exposed thermal pad), RoHS-compliant, surface-mount.

Pin/Terminal	Circuit Role	Design Meaning
4 GND	Ground reference	Primary 0 V return path for analog and digital circuitry; must be low-impedance for noise-sensitive analog outputs.
5 Vdd	Power supply	Single 2.4–3.6 V rail powering both MEMS sensor and interface IC; supplies ratiometric reference for all outputs.
6 Vouty	Analog Y-axis output	DC-coupled voltage proportional to Y acceleration; requires external RC filter or ADC input with ≥110 kΩ input impedance.
7 ST	Self-test enable	Active-high TTL-compatible control; asserts internal electrostatic test force, inducing calibrated output shift for validation.
8 Voutx	Analog X-axis output	Independent analog channel for horizontal-plane motion; shares same ratiometric scaling and noise floor as Vouty/Voutz.
14 PD	Power-down control	Active-high logic input reducing current to 5 µA; exit time depends on Cload (Ton = 550×Cload + 0.3 ms).
15 Voutz	Analog Z-axis output	Vertical-axis acceleration channel with lower bandwidth (2.5 kHz); optimized for gravity vector and free-fall detection.
16 FS	Full-scale selection	Logic level selects sensitivity: 0 = ±2g (Vdd/5 V/g), 1 = ±6g (Vdd/15 V/g); configures gain before S&H stage.

Key Features

Feature	Design Value
Factory-trimmed offset & sensitivity	Non-volatile trimming stores calibration coefficients; eliminates field calibration and ensures ±10% Vdd/2 zero-g level at power-on.
Embedded self-test	Electrostatic actuation induces known acceleration; produces repeatable ±20–50 mV output delta for hardware-level fault detection.
High shock survivability	Rated for 10,000 g (0.1 ms) unpowered and 3,000 g (0.5 ms) powered - suitable for drop-prone portable electronics and industrial equipment.
Temperature-stable performance	Zero-g drift ±1.5 mg/°C and sensitivity drift ±0.01 %/°C - maintains accuracy across -40°C to +85°C without software compensation.
Low-noise signal chain	50 µg/√Hz noise density at 2g range - enables detection of sub-degree tilt changes and subtle vibration signatures.

Applications

Mobile Motion UI

Gaming Input Devices

Use Scenario: Tilt-based screen rotation and gesture recognition in smartphones and tablets.

IC Role / Device Role / Timing Role: Analog 3-axis acceleration transducer providing real-time orientation data to host MCU.

Use Value: 0.5 mg resolution enables reliable detection of <1° tilt changes; ratiometric output simplifies integration with 3.3 V ADCs.

Use Scenario: Real-time motion capture for wireless game controllers and VR handsets.

IC Role / Device Role / Timing Role: Primary motion sensor feeding raw analog acceleration to dedicated signal processor or MCU ADC.

Use Value: 4.0 kHz X/Y bandwidth supports responsive 120 Hz motion tracking; self-test validates sensor integrity before gameplay.

Free-Fall Detection

Appliance Inertial Control

Use Scenario: Hard disk drive protection during accidental drops in laptops and portable storage.

IC Role / Device Role / Timing Role: Low-latency Z-axis acceleration monitor triggering immediate head-park sequence.

Use Value: ±2g full-scale and 2.5 kHz Z-bandwidth detect free-fall onset within <10 ms; 5 µA power-down extends battery life between checks.

Use Scenario: Vibration monitoring and imbalance detection in washing machines and HVAC blowers.

IC Role / Device Role / Timing Role: Analog vibration transducer interfaced to microcontroller ADC for FFT-based spectral analysis.

Use Value: Factory-trimmed offset ensures stable baseline under thermal cycling; high shock rating survives motor startup transients.

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 (300 µg/√Hz), no self-test, different pinout (LFCSP-16)	Lacks embedded self-test; requires external calibration; better suited for cost-sensitive, non-safety-critical tilt sensing.	Select when board space is constrained and self-test is not required; verify layout compatibility with LFCSP-16 footprint.
LIS331DLH	Digital I²C/SPI output, ±2g/±4g/±8g selectable, integrated FIFO, 10-bit ADC, no analog outputs	Requires digital interface and firmware support; eliminates external ADC but adds protocol overhead.	Prefer for systems needing programmable ODR, interrupt-driven wake-up, or multi-axis event detection without analog signal conditioning.

Compared with ADXL335 and LIS331DLH, the LIS3L02AQ provides verified ratiometric analog outputs with factory calibration and self-test in QFN-44 - making it optimal for analog-centric designs where deterministic latency, minimal BOM count, and hardware-level validation are prioritized over digital configurability or ultra-low power.

Availability

LIS3L02AQ is available at Aetrix Electronics and suitable for motion-activated UI, free-fall detection, gaming input devices, and appliance inertial control requiring stable component supply and legacy design continuity.

Supply support for LIS3L02AQ 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, designing and manufacturing microcontrollers, sensors, power ICs, and automotive-grade components since 1987.

The LIS3L02AQ belongs to ST's legacy analog MEMS accelerometer family, engineered for cost-effective, low-power motion sensing in consumer electronics and industrial controls where analog interface simplicity and proven reliability are essential.

FAQ

What is the recommended capacitive load for LIS3L02AQ outputs?

The maximum supported capacitive load is 320 pF per output (Voutx/y/z). Exceeding this value degrades bandwidth and may cause instability. For bandwidth reduction, use external capacitors in series with 110 kΩ output impedance - bandwidth ≈ 1/(2π × 110 kΩ × Cload). Layout best practice: minimize trace length and avoid stubs near output pins.

How does the FS pin affect sensitivity and noise performance?

When FS = 0 (±2g), sensitivity is Vdd/5 V/g; when FS = 1 (±6g), sensitivity drops to Vdd/15 V/g. Noise density remains constant at 50 µg/√Hz regardless of range - so SNR improves at ±6g for high-g events but resolution degrades for low-g detection. Self-test output delta also scales inversely with full-scale.

Can LIS3L02AQ operate reliably at 2.4 V supply?

Yes - all electrical characteristics including 0.5 mg resolution, ratiometric output, and self-test function are guaranteed down to 2.4 V. Supply current drops to ~0.85 mA at 2.4 V, and offset remains within Vdd/2 ±10%. However, output swing reduces proportionally, requiring compatible ADC reference scaling.

Is the exposed thermal pad on QFN-44 required to be grounded?

Yes - the exposed pad (EP) must be soldered to a solid GND plane for thermal dissipation and EMI suppression. ST recommends connecting EP directly to Pin 4 (GND) via multiple vias. Leaving it floating increases junction temperature by >15°C and may degrade long-term offset stability and noise performance.

LIS3L02AQ-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 44-QFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Analog

Axis:: X, Y, Z

Acceleration Range:: ±2g, 6g

Sensitivity (LSB/g):: -

Sensitivity (mV/g):: 660 (±2g) ~ 220 (±6g)

Bandwidth:: 4kHz (X,Y), 2.5kHz (Z)

Output Type:: Analog Voltage

Voltage - Supply:: 2.4V ~ 3.6V

Features:: Adjustable Bandwidth, Selectable Scale

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 44-QFN-EP (7x7)

LIS3L02AQ-TR FAQ

1.How can I place an order for LIS3L02AQ-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for LIS3L02AQ-TR 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 LIS3L02AQ-TR reliable?

The price and inventory of LIS3L02AQ-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS3L02AQ-TR is usually 5 days.

3.What payment methods are accepted for LIS3L02AQ-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS3L02AQ-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LIS3L02AQ-TR?

LIS3L02AQ-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LIS3L02AQ-TR 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 LIS3L02AQ-TR?

For technical support, including LIS3L02AQ-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS3L02AQ-TR requirements.

6.How does Aetrix verify that LIS3L02AQ-TR is sourced from the original manufacturer or authorized distributors?

All LIS3L02AQ-TR 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 LIS3L02AQ-TR meets industry standards.

7.What is the process for return or replacement of LIS3L02AQ-TR?

All LIS3L02AQ-TR units undergo pre-shipment inspection (PSI). If there is an issue with LIS3L02AQ-TR, 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 LIS3L02AQ-TR part is unused and in its original packaging.

Return procedure for LIS3L02AQ-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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