Accelerometers 3-axis MEMS accel ultra low power config single/double-tap recog free-fall

LIS2DW12TR – 3-Axis Ultra-Low Power MEMS Accelerometer – STMicroelectronics

Experience precise motion detection with the LIS2DW12TR digital accelerometer from STMicroelectronics. Designed for energy-sensitive applications, this 3-axis MEMS sensor delivers exceptional performance with ultra-low power consumption and configurable features like tap recognition. PCX ensures authentic STMicroelectronics components with same-day shipping and dedicated technical support.

Key Features

• Ultra-Low Power Operation: Optimized for battery-powered devices
• 3-Axis Detection: Measures acceleration on X, Y, and Z axes
• Configurable Range: Selectable ±2g, ±4g, ±8g, or ±16g full scale
• Smart Features: Built-in free-fall detection & single/double-tap recognition
• Wide Voltage Support: Operates at 1.62V to 3.6V
• High Sensitivity: Up to 4098 LSB/g (±2g range)

Technical Specifications

This digital accelerometer uses I²C/SPI interfaces with 400Hz bandwidth for responsive motion tracking. Housed in a compact 12-LGA (2×2) surface-mount package, it operates across an industrial temperature range of -40°C to 85°C. The device features programmable thresholds and embedded FIFO for efficient data management.

Common Applications

• Wearable health monitors and fitness trackers
• IoT sensor nodes and smart industrial equipment
• Portable consumer electronics (tablets, game controllers)
• Asset tracking and vibration monitoring systems
• Anti-theft devices and impact detection solutions

About STMicroelectronics

STMicroelectronics is a global semiconductor leader with 30+ years of MEMS innovation. Their sensors set industry benchmarks for accuracy and power efficiency, with over 15 billion MEMS devices shipped worldwide. STMicroelectronics maintains rigorous quality certifications including ISO/TS 16949 for automotive-grade reliability.

The company invests heavily in R&D, holding 18,000+ patents. Their MEMS portfolio undergoes extensive stress testing for shock resistance (10,000g) and long-term stability, making them the preferred choice for mission-critical applications from medical devices to industrial automation.

About MEMS Accelerometers

MEMS accelerometers detect linear acceleration, tilt, and vibration through microscopic silicon structures. These sensors convert physical motion into electrical signals, enabling devices to respond to movement or orientation changes. Their miniature size allows integration into space-constrained designs without sacrificing performance.

Modern accelerometers like the LIS2DW12TR incorporate intelligent features that reduce processing burden on host microcontrollers. This makes them essential for power-sensitive applications requiring continuous motion monitoring, such as fall detection systems, gesture controls, and predictive maintenance tools across consumer, industrial, and medical markets.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® formats for automated assembly compatibility. Contact PCX for reel quantities and kitting services.

Note: Product images are representational. Refer to datasheet for exact dimensions.

Download Full Datasheet

Frequently Asked Questions

Q: What’s the difference between ±2g and ±16g ranges?
A: Lower ranges (±2g) offer higher sensitivity for subtle movements, while wider ranges (±16g) capture high-acceleration events like impacts.

Q: Can this accelerometer detect device orientation?
A: Yes, by measuring gravity’s direction across three axes, it calculates tilt angles up to 360°.

Q: How does ultra-low power mode affect performance?
A: Current drops to 50nA in sleep mode. Active power scales with ODR (1.6μA at 1.6Hz), maintaining functionality while conserving battery.

Q: Is it suitable for vibration analysis?
A: With 400Hz bandwidth and configurable filters, it captures most machinery vibration spectra for predictive maintenance.

Q: What interfaces are supported?
A: Selectable I²C (up to 1MHz) or SPI (up to 10MHz) with 4-wire compatibility.

Q: Are evaluation boards available?
A: Yes – PCX provides STMicroelectronics’ STEVAL-MKI197V1 development kit for rapid prototyping (sold separately).

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