Triple Axis Accelerometer Breakout – ADXL345

Description

The ADXL345 Triple Axis Accelerometer is a compact, ultra-low power, high-resolution 3-axis accelerometer designed for motion and tilt sensing applications. With a measurement range of ±2g, ±4g, ±8g, and ±16g, it delivers high-precision 13-bit resolution, making it ideal for applications that require accurate motion detection. The ADXL345 Triple Axis Accelerometer provides digital output data in a 16-bit two’s complement format, accessible via SPI (3-/4-wire) or I2C interface, allowing seamless integration into microcontroller-based systems.

This Triple Axis Accelerometer is highly suitable for mobile devices, gaming, industrial instrumentation, medical applications, fitness equipment, and aerospace systems. It can measure static acceleration due to gravity for tilt sensing and dynamic acceleration resulting from motion, impact, or vibration. Its high sensitivity of 4 mg/LSB ensures accurate detection of even the smallest changes in inclination, making it a reliable choice for high-performance motion detection applications.

The ADXL345 Triple Axis Accelerometer is equipped with multiple intelligent sensing functions, including activity and inactivity detection, tap and double-tap detection, and free-fall sensing. The integrated 32-level FIFO buffer helps reduce processor load by storing data for efficient retrieval. With a wide operating voltage range of 3.3V to 5V and onboard RT9161 power chip, it ensures stable performance in high-noise environments. Additionally, its ultra-low power consumption (40µA in measurement mode and 0.1µA in standby) makes it an energy-efficient choice for battery-powered applications.

Key Features of ADXL345 Triple Axis Accelerometer

1. High-Resolution Sensing – 13-bit resolution for precise motion and tilt detection.
2. Adjustable Measurement Range – Selectable ±2g, ±4g, ±8g, and ±16g.
3. Flexible Digital Interface – Supports SPI (3-/4-wire) and I2C protocols.
4. Ultra-Low Power Consumption – 40µA in measurement mode, 0.1µA in standby at 2.5V.
5. Free-Fall Detection – Detects sudden drops, ideal for safety-critical applications.
6. Tap and Double Tap Detection – Recognizes touch-based gestures.
7. Intelligent Power Management – Motion-based power optimization for longer battery life.
8. Integrated FIFO Buffer – 32-level data storage for efficient processing.
9. Robust Build – Shock survival of 10,000g, ensuring durability in harsh environments.
10. Wide Temperature Range – Operates between -40°C to +85°C.

Applications of ADXL345 Triple Axis Accelerometer

• Mobile Devices – Motion tracking, tilt sensing, and power-efficient gesture detection.
• Gaming and VR – Enhances 3D motion sensing for interactive gaming.
• Medical Instrumentation – Used in wearable health monitoring and motion tracking devices.
• Industrial Equipment – Vibration analysis and motion control in automated systems.
• Personal Navigation – Used in GPS devices for motion compensation.
• Fitness and Sports Equipment – Step counting, activity tracking, and acceleration monitoring.
• Defense & Aerospace – High-G shock detection and motion analysis in military applications.
• Hard Disk Drive Protection – Prevents data loss by detecting free-fall motion.

The ADXL345 Triple Axis Accelerometer is an excellent choice for anyone looking for a versatile, energy-efficient, and highly accurate motion-sensing solution. Its high precision, advanced sensing functions, and low power consumption make it perfect for modern motion-sensing applications across various industries.

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