Tronics AXO315® (commonly referred to as AXO315)Full name: High-performance Single-axis Closed-loop Digital MEMS Accelerometer

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Tronics AXO315® (often abbreviated as AXO315).Full Chinese name: High-performance Single-axis Closed-loop Digital MEMS Accelerometer, also known as Force-balanced SMD MEMS Accelerometer.

2. Product Introduction

It is a tactical-grade single-axis MEMS accelerometer launched by Tronics, a subsidiary of TDK.It adopts a closed-loop force-balanced architecture, 24-bit SPI digital interface, and hermetically sealed ceramic SMD package (12×12×5 mm, 1.4 g).It can directly replace quartz accelerometers and mechanical inclinometers, featuring smaller size, lighter weight and lower cost.

3. Core Applications

• High-precision inertial navigation: Applied in Inertial Measurement Unit (IMU), Inertial Navigation System (INS), Attitude and Heading Reference System (AHRS), Motion Reference Unit (MRU).

• Dynamic inclination measurement: Servo inclinometer, dynamic inclinometer, industrial motion control and attitude stabilization.

• Vibration and motion monitoring: High-precision testing instruments, industrial equipment health monitoring, motion control of robots and unmanned devices.

4. Key Parameters

• Measurement Range: ±14 g (single-axis in-plane)

• Resolution: 2 μg/LSB, Noise Density: 15 μg/√Hz

• Bias Stability: Allan variance 4 μg, 1-year composite bias repeatability 1 mg

• Vibration Resistance: Vibration rectification error 20 μg/g², withstand 4 g vibration

• Operating Temperature: -55°C to +105°C (standard version); T0 (+150°C) / T1 (+175°C) high-temperature versions are available for oil and gas drilling.

• Interface / Package: 24-bit SPI, hermetically sealed SMD, REACH/RoHS compliant, no export control restrictions.

5. Scope of Application

• Aerospace: Navigation and attitude control of UAVs and small aircraft.

• Land Transportation: GNSS-aided vehicle/train inertial navigation, autonomous driving, precision positioning.

• Industrial Automation: Precision robots, servo control, vibration monitoring, industrial inclination measurement.

• Marine & Ship: Ship attitude stabilization, ROV/AUV underwater vehicle navigation.

• Oil & Gas Energy: Measurement While Drilling (MWD), directional drilling, high-temperature downhole navigation (T0/T1 version).

• Construction & Engineering Machinery: Tower cranes, shield machines, attitude and safety monitoring of engineering machinery.

6. Core Advantages

• Quartz-comparable Performance: Its accuracy and stability are close to quartz accelerometers, with greatly reduced cost and size.

• Harsh Environment Reliability: Maintains high precision under wide temperature range and strong vibration, suitable for severe working conditions.

• Easy Integration: Digital SPI interface, SMD package, factory calibration and self-test function, simplifying system design.