Closed-loop Digital SMD MEMS Accelerometers

Miniature, closed-looped digital SMD MEMS accelerometers with high bias and scale factor repeatability for dynamic applications

Best-in-class performances for demanding applications

AXO®300 is a unique family of high performance closed-loop digital MEMS accelerometers housed in a SMD package. While open-loop MEMS accelerometers tend to demonstrate poor performances in harsh conditions, the built-in force-rebalance architecture makes our AXO®300 sensors extremely linear and insensitive to vibrations.

Leveraging best in-class bias repeatability and scale factor repeatability, AXO® accelerometers are the perfect candidate to sense acceleration in demanding environments.

The unrivalled noise level and excellent bias stability make AXO®300 an industry-leading sensor solution to build IMU (Inertial Measurement Unit), MRU (Motion Reference Unit), GNSS-aided positioning, navigation, precision attitude, motion control and tilt measurements systems.

Seamless and cost-effective system integration

Our AXO®300 closed-loop digital MEMS accelerometers sensors feature a 24-bit SPI digital interface and continuous self-test to speed-up their integration compared to conventional analog sensors solutions.

Unlike analog tactical-grade quartz accelerometers that exhibit bulky form factors, our high performance inertial sensors are housed in a hermetic SMD package to reduce the overall SWaP-C (Size, Weight, Power and Cost). In addition, our factory-calibration step removes the need for costly and complex temperature modeling at system-level.

For applications requiring both acceleration and angular rate sensing with high bias stability and high sensitivity constraints, the AXO®300 closed-loop digital MEMS accelerometers sensors are ideally complemented by our GYPRO®4000 closed-loop gyros that pave the way to a new generation of high performance multi-axis sensors solutions.

Single axis in-plane acceleration sensor
Input range from ± 1 g to ±14 g
Closed-loop architecture for best-in class vibration rejection and linearity
24-bit digital SPI interface
Initial and continuous self-test
Hermetic ceramic SMD package
Non classified under dual-use export control

Performance	Unit	AXO®315	AXO®301	AXO®305
Input range	g	± 14	± 1	± 5
Digital resolution	µg/LSB	2	1	1
Operating temperature range	°C	-55 to +105	-40 to +85	-40 to +85
Bandwidth	Hz	>300	15*	120*
Noise density	μg/√Hz	15	8	8
Broadband resolution	μg rms	328	50	100
Latency	ms	1	20*	2*
Vibration Rectification Error	μg/g²	20	20	20
1 year composite bias repeatability	mg	1	1	1
Bias instability (Allan variance)	μg	4	4	4
Residual bias temperature error	mg	0.5	0.5	0.5
Bias in-run stability	μg	15	15	15
Long Term Bias Repeatability	mg	0.4	0.4	0.4
1 year composite scale factor repeatability	ppm	600	600	600
Scale Factor non linearity	ppm	80	80	80
Residual scale factor temperature error	ppm	400	400	400
Data Rate	Hz	2500	900**	2500**
Power Supply	V	5	5	5
Size (L x l x h)	mm	12 x 12 x 5.5	12 x 12 x 5.5	12 x 12 x 5.5
Status		Production	Pre-production	Pre-production

*Customizable **User configurable Custom configuration upon request, please contact us.

Evaluation boards

To facilitate the evaluation of AXO® acceleration sensors, Tronics has designed the AXO®-EVB3, an evaluation board compatible with Arduino Leonardo platform. For USB interface, simply purchase an Arduino Leonardo board, plug it on the AXO®-EVB3 and download Arduino software & drivers.