Bosch BMI320

The BMI320 is a highly integrated, low power inertial measurement unit (IMU) that combines precise acceleration and angular rate (gyroscopic) measurement with intelligent on-chip motion-triggered interrupt features. The BMI320 integrates a 16 bit digital, triaxial accelerometer with range configurable to ±2g, ±4g, ±8g, ±16g; a 16 bit digital, triaxial gyroscope with range configurable to ±125°/s, ±250°/s, ±500°/s, ±1000°/s, and ±2000°/s; a 16 bit digital temperature sensor for an operating temperature range -40℃ ... +85℃.

• Compact standard size 2.5 x 3 mm² LGA overmold package, 14 pins, height 0.83 mm
• Primary digital interface with 10 MHz SPI slave (4-wire, 3-wire), 12.5 MHz I3C and up to 1 MHz I²C (Fm+)
• Sample rates (ODR): 0.78125 Hz ... 6.4 kHz (nominal)
• Programmable low-pass filtering
• Wide power supply range: analog VDD 1.71 V ... 3.63 V and VDDIO 1.08 V ... 3.63 V, both independent
• Ultra low current consumption: typ. 790 μA (in full ODR and aliasing free operation)
• Built-in power management unit (PMU) for advanced power management and low power modes
• Rapid startup time: 2.5 ms for accelerometer and gyroscope (fast start mode)
• < 1 ms group delay
• 2 KB on-chip FIFO data buffer for accelerometer, gyroscope, temperature, and sensor timestamps
• Fast offset error compensation for accelerometer and gyroscope
• Gyroscope: fast sensitivity error compensation for the gyroscope (max. sensitivity error < 1)
• Hardware synchronization of accelerometer, gyroscope and temperature (< 1/s)
• Sensor time stamps for accurate system (host) and sensor (IMU) time synchronization (< 40 μs)
• Two independent programmable I/O pins for interrupt and synchronization events
• On-chip interrupt engine and integrated smart features for always-on applications (e.g. activity, action, and gesture recognition) using the IMU ultra-low power domain
  • motion detection
  • step detector
  • plug 'n' play step counter
  • orientation and flat detection
  • single tap, double tap, and triple tap detection
• RoHS compliant, halogen and lead free