Axo®301
High-Resolution ±1 g Inclinometer and Accelerometer

High resolution MEMS accelerometer for precise inclination and acceleration sensing in industrial and railway applications
AXO301 Key Performances
Input range | ± 1 g |
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Digital resolution | 1 µg/LSB |
Operating temperature range | -40 °C to +85 °C |
Bandwidth | 15* Hz |
Noise density | 9 μg/√Hz |
Broadband resolution | 50 μg rms |
Latency | 20 ms |
Vibration rectification error | 20 μg/g² |
1 year composite bias repeatability | 1 mg |
Bias instability (Allan variance) | 3 μg |
Residual bias temperature error | 0.5 mg |
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Bias in-run stability | 15 μg |
Long term bias stability | 0.14 mg |
1 year composite scale factor repeatability | 1000 ppm |
Scale factor non linearity | 80 ppm |
Residual scale factor temperature error | 500 ppm |
Data rate | 950 Hz |
Power supply | 5 V |
Size (L x l x h) | 12 x 12 x 5.5 mm |
Status | Production |
AXO301 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
- Compliant with EN61373 railway standard for vibrations and shocks

Applications and Key Product Benefits
Inclinometer sensor with high stability under vibrations
AXO301 is a ±1 g high resolution, single axis closed-loop digital MEMS accelerometer and inclinometer that offers a performance equivalent and cost-effective alternative to precision quartz accelerometers at a fraction of their size, weight and power.
AXO301 is perfectly suited to acceleration and inclination measurement for applications operating in highly vibrating environments, such as land and railway systems.
The 24-bit digital SPI interface eases the integration of AXO301 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.
Inclination measurement accelerometer for railway and industrial applications
AXO301 high resolution MEMS accelerometer and inclinometer is tailored to IMU for train odometry, train acceleration and train tilt measurement, as well as INS for GNSS-assisted positioning and navigation of trains. It is compliant with EN61373 railway standard for vibrations and shocks.
Besides, AXO301 is the perfect candidate for integration into high resolution static and dynamic inclinometers, and motion control systems in construction machinery.