CRS39A Gyroscope

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About the CRS39A Gyroscope

CRS39A provides the optimum solution for applications where bias instability, angle random walk and low noise are
of critical importance.

At the heart of the CRS39A is Silicon Sensing’s VSG3QMAX vibrating ring MEMS sensor which is at the pinnacle of 15 years of design evolution and the latest off a line which has produced over 30 million high integrity MEMS inertial sensors. The VSG3QMAX gyro sensor is combined with precision discrete electronics to achieve high stability and low noise, making the CRS39A a viable alternative to Fibre Optic Gyro (FOG) and Dynamically Tuned Gyro (DTG). CRS39A has been designed for mounting within a 25mm inside diameter cylinder. Two on board temperature sensors and the resonant frequency of the MEMS enable additional external conditioning to be applied to the CRS39A by the host, enhancing the performance even further. CRS39A provides improved performance and hysteresis over the established CRS39-03.

Key features CRS39A

• Proven and robust silicon MEMS vibrating ring structure
• FOG-like performance
• DTG-like size and performance
• Low Bias Instability (0.03°/hr)
• Excellent Angle Random Walk (0.004°/√hr)
• Ultra-low noise (<0.006°/s rms, 10Hz)
• Optimised for low rate range environments
  (e.g. North Finding)
• Precision analogue output
• Temperature range from -10°C to +110°C
• High shock and vibration rejection
• Two temperature sensors and MEMS frequency
  output for precision thermal compensation
• RoHS compliant
• Improved hysteresis
• Lower current compensation than CRS39-03

Applications CRS39A

• Drilling equipment and guidance
• Rail track monitoring
• Gyro-compassing and heading control
• Autonomous vehicles, UAVs and ROVs
• Robotics

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