The AXO®301 is a precision-engineered, single-axis closed-loop MEMS accelerometer that serves as a high-performance and cost-efficient substitute for traditional quartz and servo accelerometers, all while being substantially smaller, lighter, and more energy-efficient. It surpasses all other MEMS accelerometers currently available on the market.

This device is ideally designed for measuring acceleration and deceleration in environments with intense vibrations, making it perfect for applications in land and railway navigation and positioning systems.

Featuring a 24-bit digital SPI interface, the AXO®301 simplifies integration into advanced Inertial Measurement Units (IMUs) and Inertial Navigation Systems (INS). Its built-in self-test functionality allows for initial validation of the sensor’s performance and ongoing operational checks.

Performance Highlights

• Single-axis in-plane accelerometer with a range of ±1 g
• Resolution of 50 µg
• Composite bias repeatability of 1 mg over one year
• Composite scale factor repeatability of 1000 ppm
• Configurable bandwidth of 15 Hz (upon request)
• Vibration rejection capability of 20 μg/g²
• Meets EN61373 standards for railway vibrations and shocks

Notable Features

• 24-bit digital SPI communication interface
• Initial and ongoing self-testing capabilities
• Factory-calibrated across temperature ranges
• Hermetically sealed ceramic SMD package
• Not classified under dual-use export regulations
• Compliant with REACH and RoHS directives

Primary Applications

• Inertial Measurement Units for train odometry and automated train control
• Inertial Navigation Systems for GNSS-assisted land and railway positioning
• Performance testing for trains
• Train tilt detection
• Dynamic inclinometers