Overview
The ICM-42631 is a high-performance 6-axis MEMS IMU that integrates a 3-axis accelerometer and 3-axis gyroscope optimized for ultra-low noise and low power consumption. With a gyroscope noise density of 5.7 mdps/√Hz and accelerometer noise density of 70 µg/√Hz, the device is engineered for demanding motion-tracking applications such as robotics, drones, industrial motion control, and IoT sensing.
Its programmable full-scale ranges, high ODR up to 8 kHz, and efficient power modes make the ICM-42631 an excellent choice for precision, high-responsiveness systems with tight power budgets.
Core Parameters
| Parameter | Specification |
|---|---|
| Accelerometer Range | ±2g, ±4g, ±8g, ±16g |
| Gyroscope Range | ±15.625 / ±31.25 / ±62.5 / ±125 / ±250 dps |
| Accelerometer Noise Density | 70 µg/√Hz |
| Gyroscope Noise Density | 5.7 mdps/√Hz |
| Accelerometer ODR | Up to 4 kHz |
| Gyroscope ODR | Up to 8 kHz |
| Interface | I²C / SPI |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | –40°C to +85°C |
| Package | 2.5 × 3.0 × 0.8 mm LGA |
Features
- Ultra-low noise 6-axis inertial measurement unit
- 5.7 mdps/√Hz gyro noise for high-precision angular sensing
- 70 µg/√Hz accel noise for stable linear motion capture
- Programmable full-scale ranges for both accel and gyro
- High output data rates up to 8 kHz
- Low-power duty-cycled modes ideal for battery-powered systems
- Integrated digital filtering and configurable low-noise architecture
- SPI and I²C communication interfaces
- Compact LGA package suitable for dense embedded designs
Typical Application Scenarios
| Application | Why ICM-42631 Fits |
|---|---|
| Autonomous Robots | Low drift and low noise enable accurate motion feedback |
| Drones & UAV Flight Stabilization | 8 kHz gyro ODR improves stability and response time |
| Industrial Motion Monitoring | High precision ensures repeatable measurements |
| Consumer IoT Sensors | Low power consumption extends battery life |
| Wearables & Activity Trackers | Small footprint and stable low-noise operation |
| AR/VR Head Tracking | Low latency and stable angular rate improve tracking accuracy |
Performance Comparison
| Specification | ICM-42631 | Typical IMU | Older 6-Axis IMU |
|---|---|---|---|
| Gyro Noise | 5.7 mdps/√Hz | 10–20 mdps/√Hz | >30 mdps/√Hz |
| Accel Noise | 70 µg/√Hz | 120–200 µg/√Hz | >250 µg/√Hz |
| Max Gyro ODR | 8 kHz | 1–3 kHz | <1 kHz |
| Power Efficiency | High | Medium | Low |
| Package Size | 2.5 × 3.0 mm | Larger | Larger |
Conclusion
The ICM-42631 combines ultra-low noise, wide sensing ranges, and high data-rate performance in a compact, power-efficient package. Its 5.7 mdps/√Hz gyroscope noise and 70 µg/√Hz accelerometer noise deliver excellent stability and accuracy, making the device suitable for advanced robotics, drones, industrial sensing and motion-tracking applications. With flexible interfaces and integrated filtering features, the ICM-42631 is a robust solution for precision motion systems.
Manufacturer Profile
TDK InvenSense is a global leader in MEMS motion sensing, offering IMUs, microphones and sensor platforms widely adopted in robotics, mobile devices, industrial equipment and automotive systems. Their IMUs are recognized for low power consumption, high accuracy and consistent long-term performance.
For more information and to review our available inventory, please contact our team for detailed pricing, current stock levels, and any additional technical support you may need.
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