Tronics
MEMS Inertial Sensors FAQ
All you need to know on our high performance MEMS inertial sensors.
The main legal basis for controls on dual-use goods is the European Union Dual-Use Regulation, also known as Council Regulation (EC) No 2021/821 and associated legal amendments. This legislation is directly applicable in all European Union countries, including France. As such, GYPRO and AXO products are not dual-use products.
Tronics manufactures its AXO MEMS accelerometers and GYPRO MEMS gyroscopes in its production facility located in Crolles, near Grenoble (France). Our 2500 m² manufacturing site hosts a MEMS wafer fab (front-end and back-end), assembly, calibration and test facilities under the same roof.
Each sensor is serialized and delivered with a Certificate of Compliance indicating the following test results:
- Scale factor non linearity at room temperature
- Scale factor variation over temperature
- Bias variation over temperature
- RMS noise [1-100Hz] at room temperature for GYPRO products and noise density for AXO products.
Output data rate of products from AXO®300 Series and GYPRO®4000 Series can be adjusted by the end user to fit the data processing capabilities at system-level. Please contact Tronics to get more information on the data rate configuration procedure.
Bandwidth and latency of AXO and GYPRO products are defined and programmed upfront to fit our target applications and customer use cases. They cannot be changed on the final products. However, bandwidth and latency are factory-customizable to fit some specific application requirements. Please contact Tronics to discuss application cases requiring custom bandwidth and latency configurations.
During factory calibration, each sensor is temperature-compensated over the operating temperature range.
To achieve optimal performances, it is recommended to perform a new compensation at the system level.
GYPRO and AXO products are silicon-MEMS inertial sensors and as such are not affected by magnetic fields.
Arduino-based Evaluation Boards (EVB) can be purchased to run a fast evaluation of Tronics AXO and GYPRO sensors. These EVB provide a convenient way to quickly assess the main product performances, leveraging our evaluation software that allows a swift data acquisition with no need for sensors integration on PCB.
For GYPRO & AXO products, the I/O voltage level of the sensor can be directly adapted from 1.8 to 5V, thanks to the VDDIO pin.
Both AXO and GYPRO products are powered by Tronics’ unique closed-loop architecture that provides excellent vibration rectification error and high linearity on their full measurement range. Tronics is the only supplier in the market providing both MEMS accelerometers and gyroscopes with closed-loop electronics.
The closed-loop architecture allows to improve vibration rejection by a factor of 10 compared to open-loop sensors.
Tronics offer MEMS inertial sensors for various demanding applications. Depending on the product reference, our accelerometers and gyroscopes are available with three operating temperature ranges: +85°C for industrial applications, 105°C for avionics and advanced air mobility, as well as +150°C and +175°C for oil & gas applications. The operating and storage temperature range of each product is mentioned in its datasheet.
Yes, our MEMS Sensors Mechanical Integration Guidelines document is available on request. It provides a set of guidelines and that should be followed to guarantee the maximum performance and reliability of Tronics’ MEMS accelerometers and gyros after assembly. This includes PCB design guidelines (sensor placement, anchor points…), PCB material selection, soldering methodology and calibration. Please contact our support team at support.tronics@tdk.com.
Our AXO accelerometers and GYPRO gyroscopes embedded a fully digital 24-bit SPI interface. This digital-centric approach allows to get rid of the analog-to-digital conversion at system-level, reducing both the bill of materials and system complexity.
Our sensors have been tested by the CNES (French Research Center for Space) to assess their compatibility with space applications. The study encompasses hermeticity tests, outgassing, moisture resistance, thermal cycling, burn-in, as well as radiation testing. If you want to get more information on the results, send us an email at info.tronics@tdk.com
Tronics’ AXO MEMS accelerometers and GYPRO MEMS gyroscopes are high-performance, single-axis sensors exhibiting tactical-grade performance for precision positioning and motion control applications. If you intend to build multi-axis systems such as an IMU or an INS, several AXO and GYPRO products can be combined to create a complete measurement unit. If you want to get more details regarding multi-axis sensors integration, contact our support team at support.tronics@tdk.com
GYPRO®4300 is the recommended gyroscope for high dynamics applications, such as precise positioning and GNSS-assisted navigation of terrestrial, aerial and marine systems. It is calibrated over a measurement range of ±300°/s, however, it is capable of measuring above this value up to about ±450°/s.
GYPRO®5050, is a high-resolution and low-noise gyroscope which is the right candidate for low dynamics and low-speed applications, such as attitude determination and north-seeking. It is calibrated over a measurement range of ± 50°/s
Input measurement range cannot be changed by the user. Our closed-loop architecture allows to maintain a high linearity on the full measurement range, in contrast to other solutions that feature user configuration with compromise on performance
GYPRO4300 has a scale factor of 10,000 LSB/°/s with a 24-bits digital output, which corresponds to a digital resolution of 10-4°/s/LSB, i.e. 0,36 °/h/LSB.
GYPRO5050 is a high-resolution MEMS gyroscope. It has a scale factor of 100,000 LSB/°/s with a 24-bits digital output, which corresponds to a digital resolution of 10-5 °/s/LSB, i.e. 0,036 °/h/LSB.
Typical latency of GYPRO4300 product is 1 ms, which is compatible with dynamic stabilization system requiring fast control loop and large bandwidth.
For applications requiring lower dynamics and higher resolution, GYPRO5050 must be considered. It has a latency of 40 ms.
The reliability of our GYPRO MEMS gyroscopes has been assessed by High Temperature Operating Life Test (HTOL) and High Temperature Storage Life Test (HTSL).
The MTBF for operation at 50°C is > 1 000 000 hours, which is significantly higher than tactical-grade Fiber Optics Gyros exhibiting equivalent performance. This is enabled by the solid-state architecture of MEMS sensors that minimizes the number of internal components as well as system complexity, thus increasing their operating lifetime.
We offer our GYPRO sensors with 3 different frequency configurations that are intended to be combined as a triplet in an IMU to avoid mechanical crosstalk effects.
AXO314, AXO®315 and AXO315T0 are specified over a typical measurement range of ±14 g.
AXO®305 is specified over a typical range of ±5 g. It is capable of measuring above this value up to about ±7 g.
AXO®301 is specified over a typical range of ±1 g. It is capable of measuring above this value up to about ±7 g.
Input measurement range cannot be changed by the user. Our closed-loop architecture allows to maintain a high linearity on the full measurement range, in contrast to other solutions that feature user configuration with compromise on performance.
AXO314, AXO®315 and AXO315T0 have a scale factor of 500,000 LSB/g with a 24-bits digital output, which corresponds to a digital resolution of 2 µg/LSB.
AXO301 and AXO305 have a scale factor of 1,000,000 LSB/g with a 24-bits digital output, which corresponds to a digital resolution of 1 µg/LSB.
Typical latency of AXO315 product is 1 ms, which is compatible with dynamic stabilization system requiring fast control loop and large bandwidth.
AXO305 has a latency of 2 ms for navigation, positioning, and motion control applications.
Typical latency of AXO301 product is 15 ms, enabling a smaller noise density over its 15 Hz bandwidth for high resolution inclination/acceleration measurement.
Most of the tactical-grade accelerometers available on the market rely on open-loop architectures that tend to exhibit degraded performances when used in severe vibrating environments. Tronics’ AXO accelerometers are powered by an industry-unique closed-loop architecture that ensures high linearity on the measurement range as well as extremely high rejection of vibration and shocks, maintaining a high accuracy in severe operating conditions. In addition, AXO accelerometers are factory-calibrated over their operating temperature range, demonstrating extremely low level of bias and scale factor residual temperature error.
AXO301, AXO35 and AXO314 are intended to be used for industrial applications, as well as motion control, positioning and GNSS-assisted navigation systems. Their maximum operating temperature is +85°C.
AXO315 has an extended temperature range up to +105°C, enabling its integration into demanding avionics and advanced air mobility applications such as flight control and AHRS.
AXO315T0 is qualified up to +150°C for integration into directional drilling systems used for oil and gas exploitation.
You still need some information regarding our products from AXO®300 and GYPRO®4000 product lines?
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