BMI270.C

Part: BMI270 (Bosch Sensortec)

Type: 6-axis, smart, low power Inertial Measurement Unit (IMU)

Description: A highly integrated, low power inertial measurement unit (IMU) that combines precise 16-bit triaxial acceleration (±2g/±4g/±8g/±16g) and 16-bit triaxial angular rate (±125dps/±250dps/±500dps/±1000dps/±2000dps) measurement with intelligent on-chip motion-triggered interrupt features.

Operating Conditions:

• Supply voltage: Analog VDD 1.71V … 3.6V, independent VDDIO 1.2V…3.6V
• Operating temperature: null
• Gyroscope ODR: 25 Hz … 6.4 kHz
• Accelerometer ODR: 0.78 Hz … 1.6 kHz

Absolute Maximum Ratings:

• Max supply voltage: null
• Max continuous current: null
• Max junction/storage temperature: null

Key Specs:

• Accelerometer range: ±2g/±4g/±8g/±16g (16-bit digital, triaxial)
• Gyroscope range: ±125dps/±250dps/±500dps/±1000dps/±2000dps (16-bit digital, triaxial)
• Low current consumption: typ. 685 μA (in full ODR and aliasing free operation)
• Gyroscope noise level: typ. < 7 mdps / √ Hz (Performance mode)
• Gyroscope startup time: 2 ms (in fast start mode)
• Accelerometer startup time: 2 ms
• Gyroscope filter bandwidth: 11 … 751 Hz
• Accelerometer filter bandwidth: 5.5 … 740 Hz

Features:

• Built-in power management unit (PMU)
• Freely configurable secondary digital interface
• I²C (Fm+) master interface hub for 1 I2C AUX sensor
• 10 MHz slave SPI (4-wire, 3-wire) for OIS / Dual OIS applications
• 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, reducing the error down to typ. 0.4 %)
• 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
• Motion-triggered interrupt features: Significant motion/Any motion/Motion detect/No motion/Stationary detect/Wrist wear wakeup/Wrist worn step counter and detector/Activity change recognition/Push arm down/Pivot up/Wrist jiggle/Flick in /out

Applications:

• Wearables
• Hearables
• Smart clothing
• Augmented / virtual reality (AR/VR)
• Activity & Context Recognition

Package:

• LGA mold package, 14 pins, footprint 2.5x3.0mm², height 0.83mm

• 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 5.5 ∣ 11 … 740 ∣ 751 Hz
• Wide power supply range: Analog VDD 1.71V … 3.6V and independent VDDIO 1.2V…3.6V
• Low current consumption: typ. 685 μA (in full ODR and aliasing free operation)
• Performance mode for gyroscope to minimize noise level: typ. < 7 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
• I²C (Fm+) master interface hub for 1 I2C AUX sensor (e.g. ext. magnetometer, pressure)
• o data synchronized to IMU
• 10 MHz slave SPI (4-wire, 3-wire) for high speed, calibration free OIS / Dual OIS (SPI) applications
• o Up to 6.4 kHz ODR, control register access and down to 680 μs group delay
• o Connectible latency optimized low pass-filters with programmable cut-off frequencies
• 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, reducing the error down to typ. 0.4 %)
• 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
• BMI270 Features:

Significant motion/Any motion/Motion detect/No motion/Stationary detect/Wrist wear wakeup/Wrist worn step counter and detector/Activity change recognition/Push arm down/Pivot up/Wrist jiggle/Flick in /out

• Wearables
• Hearables
• Smart clothing
• Augmented / virtual reality (AR/VR)
• Activity & Context Recognition

Stress above these limits may cause damage to the device. Exceeding the specified electrical limits may affect the device reliability or cause malfunction.

Table 5: Absolute maximum ratings

• Wearables
• Hearables
• Smart clothing
• Augmented / virtual reality (AR/VR)
• Activity & Context Recognition