Closed Loop, Digital, MEMS Accelerometers & Gyros for Drones and Robotics

High-Performance Digital MEMS Accelerometer Released

By Mike Ball / 15 Oct 2021
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TRONICS AXO315 MEMS accelerometerTronics Microsystems has confirmed that its AXO315 miniature single-axis closed-loop digital MEMS accelerometer is now available at distributors Digikey, Mouser, Farnell, Newark and Element 14. An Arduino-based evaluation kit for developers and system integrators has also been released.

The AXO315 is a ±14 g range, in-plane linear accelerometer designed to provide high precision and reliability for challenging applications with severe temperature and vibration conditions, such as UAVs (unmanned aerial vehicles) and robotics. The sensor achieves a one-year composite repeatability of 1 mg, and a 600 ppm composite scale factor repeatability over temperatures ranging from -55 °C to +105 °C and under 4 g vibrations. It features excellent vibration rejection and superior Allan variance characteristics, with a basis instability of 4 µg, a velocity random walk of 0.006 m/s/√h and a very low noise of 15 µg/√Hz, thus enabling high resolution and low error.

The characteristics of the sensor make it ideal for SWaP (size, weight and power)-constrained designs such as Inertial Measurement Units (IMU) and Inertial Navigation Systems (INS) for GNSS-aided positioning, as well as navigation for unmanned vehicles.

The design of the AXO315 includes a force-rebalance architecture, a 24-bit digital SPI interface and an SMD package. Its performance is equivalent to the incumbent analog quartz accelerometers and mechanical inclinometers, but at a fraction of the size and weight, and integration is easier compared to analog sensors.

The AXO315 complements the existing lineup of the high-performance Tronics GYPRO digital gyros for high-performance IMUs and INS. It is enclosed in a lightweight 1.4 g hermetic SMD J-lead ceramic package measuring 12 x 12 x 5 mm, enabling low-cost assembly and reliability on PCB, even in fast-changing temperature conditions.

The AXO315 accelerometers are manufactured, tested and calibrated at Tronics Microsystems’ facility in Grenoble, France. Evaluation of the sensors can be made through an Arduino-based evaluation kit that is specifically designed to provide developers with improved testing functionalities such as output reading and recording, recalibration and digital self-tests.

To learn more, contact Tronics Microsystems: Visit Website Send Message View Supplier Profile
Posted by Mike Ball Mike Ball is our resident technical editor here at Unmanned Systems Technology. Combining his passion for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years. Connect & Contact