Silicon Sensing CRG21 is a miniature single-axis MEMS gyroscope with both analogue and digital outputs, built on the company’s proprietary cos²θ ring MEMS structure and responding to rate about the out-of-plane z-axis. It delivers 1°/hr bias instability and 0.2°/√hr angular random walk with a digital resolution of 0.03125°/s over SPI®, and needs no calibration in the host system. Two auxiliary analogue-to-digital inputs let a designer digitise accelerometers or further gyros through the same part, so a multi-axis sensor cluster can be built without additional conversion. The sensor weighs 0.8 g in a compact ceramic LCC surface-mount package and runs from -40°C to +105°C.

Why Choose the CRG21 Single-Axis MEMS Gyroscope?

• Proprietary cos²θ ring MEMS technology

• Out-of-plane (z-axis) rate response

• No requirement for calibration

• Continuous comprehensive self-test

• Suitable for high-integrity applications

• High immunity to shock and vibration

• Very low angular random walk — 0.2°/√hr

• Wide dynamic range

• 0.03125°/s digital resolution

• Digital SPI® interface

• Compact LCC SMT package

• Two auxiliary ADC inputs for building multi-axis sensor clusters

• Ratiometric analogue rate outputs

• Internal temperature sensor

• RoHS compliant

What Is the CRG21 Single-Axis MEMS Gyroscope Used For?

• Electronic stability control

• Vehicle rollover detection and control

• Navigation systems

• Inertial measurement units

• Adaptive cruise control

• Event data recorders and telematics

• Robotics

• Platform stabilisation

Frequently Asked Questions

What is the CRG21 Single-Axis MEMS Gyroscope?

Silicon Sensing CRG21 is a miniature single-axis MEMS gyroscope with analogue and digital outputs, offering 1°/hr bias instability, 0.2°/√hr angular random walk and 0.03125°/s digital resolution from a 0.8 g ceramic LCC package, with two auxiliary ADC inputs for multi-axis clusters.

What should I look for when selecting a sensor like the CRG21 Single-Axis MEMS Gyroscope?

Bias instability, angular random walk, bandwidth and rate range determine fitness for your application — see the specifications above. CRG21 is offered in three standard bandwidth and rate-range configurations, and both are factory programmable if none of the three fits.

Where is the CRG21 Single-Axis MEMS Gyroscope available?

The CRG21 Single-Axis MEMS Gyroscope is available through Leo Drive in the following region: Turkey. For other regions, please contact Leo Drive.

How can I get the datasheet and technical documents for the CRG21 Single-Axis MEMS Gyroscope?

The preliminary datasheet is attached to this page. Further technical documents are available on the manufacturer’s website, and you can contact Leo Drive for the released revision and integration support.

Explore More at Leo Drive

The CRG21 Single-Axis MEMS Gyroscope is part of the MEMS Gyroscopes range at Leo Drive. Browse all autonomous vehicle sensors and components, or talk to our engineering team about integration in your project.