Bosch Sensortec BMI270

The Bosch Sensortec BMI270 is a highly integrated, low-power inertial measurement unit (IMU) designed for high-performance applications, particularly in the wearable technology sector. It combines precise acceleration and angular rate measurements with intelligent on-chip motion-triggered interrupt features. The device is part of the BMI260 family of IMUs and is optimized for fast and accurate inertial sensing. It features Bosch’s automotive-proven gyroscope technology and an improved accelerometer, making it suitable for various wearable devices such as smartwatches, hearables, smart clothes, smart shoes, and smart glasses.

• Combines a 16-bit triaxial gyroscope and a 16-bit triaxial accelerometer in a compact 2.5 x 3.0 x 0.8 mm³ LGA package.
• Features Bosch’s automotive-proven gyroscope technology with an improved accelerometer, including low zero-g offset, low temperature drifts, and robustness over PCB strain.
• Self-calibrating gyroscope using motionless CRT (Component Re-Trimming) functionality to compensate for MEMS typical soldering drifts, ensuring post-soldering sensitivity errors down to ± 0.4%.
• Fast offset error compensation for accelerometer and gyroscope, and fast sensitivity error compensation for gyroscope.
• HW synchronization of accelerometer, gyroscope, and AUX sensor (< 1 µs), and sensortime stamps for accurate system and sensor time synchronization (<40 µs).
• Intuitive gesture, context, and activity recognition with an integrated plug-and-play step counter/detector optimized for accurate step counting in wrist-worn devices.
• Ultra-low power consumption with intelligent power management, extending system battery life by handling multiple activity tracking, step counting, and gesture recognition functions independently of the main system processor.
• RoHS compliant, halogen and lead free.

• Wearable devices such as smartwatches, fitness trackers, and smart bands.
• Hearables, smart clothes, smart shoes, and smart glasses.
• Context and activity recognition in devices, including standing, walking, and being in a vehicle.
• Step counting and gesture recognition in wrist-worn devices.

1. What is the Bosch Sensortec BMI270?

   The Bosch Sensortec BMI270 is a highly integrated, low-power inertial measurement unit (IMU) that combines precise acceleration and angular rate measurements with intelligent on-chip motion-triggered interrupt features.

2. What are the key features of the BMI270?

   The BMI270 features a 16-bit triaxial gyroscope and a 16-bit triaxial accelerometer, self-calibrating gyroscope, fast error compensation, HW synchronization, and ultra-low power consumption.

3. What are the output data rates of the BMI270?

   The output data rates for the accelerometer range from 12.5 Hz to 1.6 kHz, and for the gyroscope from 25 Hz to 6.4 kHz.

4. What interfaces does the BMI270 support?

   The BMI270 supports 2x SPI, 2x I2C, AUX I/F, and OIS I/F.

5. What is the power consumption of the BMI270?

   The BMI270 has a supply current of 685 µA at full ODR (aliasing-free).

6. What is the operating temperature range of the BMI270?

   The operating temperature range is -40°C to +85°C.

7. Is the BMI270 RoHS compliant?

   Yes, the BMI270 is RoHS compliant, halogen and lead free.

8. What are the typical applications of the BMI270?

   The BMI270 is typically used in wearable devices such as smartwatches, hearables, smart clothes, smart shoes, and smart glasses.

9. How does the BMI270 extend system battery life?

   The BMI270 extends system battery life by handling multiple activity tracking, step counting, and gesture recognition functions independently of the main system processor.

10. What is the package style and mounting method of the BMI270?

    The BMI270 comes in an LGA-14 package and uses surface mount technology.