High-resolution ±1g MEMS accelerometer with digital interface for high-vibration environments

AXO®301 MEMS Accelerometer High resolution and high stability in vibrating environments

AXO®301 is a high accuracy, single axis closed-loop MEMS accelerometer that offers a performance equivalent and cost-effective alternative to quartz and servo-accelerometers at a fraction of their size, weight and power. It overpasses all commercially available MEMS accelerometers.

AXO®301 is perfectly suited to acceleration and deceleration measurements for applications operating in highly vibrating environments, such as land and railway positioning and navigation systems.

The 24-bit digital SPI interface eases the integration of AXO®301 into high performance IMU and INS. The built-in self-test ensures initial verification of the sensor’s integrity and continuous in operation functionality test.

Key performances

• ±1 g range, single-axis in-plane accelerometer
• Resolution of 50µg
• 1 year composite bias repeatability of 1 mg
• 1000 ppm composite scale factor repeatability
• 15 Hz bandwidth (configurable upon request)
• Vibration rejection of 20 μg/g²
• Compliant with EN61373 railway standard for vibrations and shocks

Key features

• 24-bit digital SPI interface
• Initial and continuous self-test
• Factory-calibrated over temperature
• Hermetic ceramic SMD package
• Non classified under dual-use export control
• REACH and RoHS compliant

Key applications

• IMU for train odometry and Automated Train Control
• INS for GNSS-assisted land & railway positioning
• Train performance testing
• Train tilt sensing
• Dynamic inclinometers