Name: BMI270
Brand: BOSCH
SKU: BMI270

At CES® in Las Vegas, Nevada, Bosch Sensortec announced the BMI270, an ultra-low power smart Inertial Measurement Unit (IMU) specifically targeted at wearable applications. It offers a strongly improved accelerometer offset and sensitivity performance, enabled by the newest Bosch MEMS process technology.

The BMI270 is the latest member of Bosch Sensortec’s BMI260 family of IMUs. It includes intuitive gesture, context and activity recognition with an integrated plug-and-play step counter, which is specially optimized for accurate step counting in wrist-worn devices. The IMU is also well suited for other types of wearable devices, such as hearables, smart clothes, smart shoes, smart glasses and ankle bands.

As an ultra-low power IMU, the BMI270 significantly extends system battery life by handling multiple activity tracking, step counting and gesture recognition functions independently of the main system processor, without having to wake it up. These processor-independent functions include tasks such as sending an interrupt when a certain number of steps is reached, or geofencing to activate GPS when the user stands up and starts walking.

Powerful, accurate gesture and activity recognition features therefore run in the ultra-low power domain, with current consumption of just 30 μA. This noticeably reduces power consumption and users can benefit from extended battery charging intervals.

BMI270 Features

2 KB on-chip FIFO buffer for accelerometer, gyroscope, timestamps, and AUX sensor data
Fast offset error compensation for accelerometer and gyroscope
Fast sensitivity error compensation for gyroscope (CRT, max. sensitivity error < 1%)
HW synchronization of accelerometer, gyroscope, and AUX sensor (< 1 µs)
Sensortime stamps for accurate system (host) and sensor (IMU) time synchronization (<40 µs)
2 independent programmable I/O pins for interrupt and synchronization events
RoHS compliant, halogen and lead free
Compact standard size LGA mold package, 14 pins, footprint 2.5x3.0mm² height 0.83mm
Primary digital interface with 10 MHz slave SPI (4-wire, 3-wire) and up to 1MHz I²C (Fm+)
Output data rates (ODR): 25 Hz ? 6.4 kHz (gyroscope) and 0.78 Hz ? 1.6 kHz (accelerometer)
Programmable low-pass filter (accelerometer ? gyroscope): bandwidth ca. 5 ? 3 ? 680 ? 890 Hz
Wide power supply range: Analog VDD 1.71V ? 3.6V and independent VDDIO 1.2V?3.6V
Ultra-low current consumption: typ. 685 µA (in full ODR and aliasing-free operation)
Performance mode for gyroscope to minimize noise level: typ. < 8 mdps /?Hz.
Built-in power management unit (PMU) for advanced power management and low power modes
Rapid startup time: 2 ms for gyroscope (in fast start mode) and 2 ms for accelerometer
Freely configurable secondary digital interface