BMI323
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Bosch BMI323 6-Axis Inertial Measurement Unit (IMU) combines precise acceleration and angular rate (gyroscopic) measurement with intelligent on-chip motion-triggered interrupt features. The 6-axis IMU comprises a 16-bit triaxial gyroscope, a 16-bit triaxial accelerometer, and a 16-bit digital temperature sensor in a single chip.
The BMI323 offers fast and accurate inertial sensing in all applications. The BMI323 Sensor features a self-calibrating gyroscope using motionless CRT (component re-trimming) functionality to compensate MEMS typical soldering drifts, reducing post soldering sensitivity errors to ±0.7%. The device includes embedded gesture and activity recognition with an integrated plug-and-play step counter/detector optimized for accurate step counting in wrist-worn devices. The IMU is well-suited for other types of wearable devices, such as hearables, smart fitness trackers, and other mobile devices.
The BMI323 IMU is optimized for embedded consumer electronics devices. The Sensor has very wide ranges for VDD and VDDIO supply voltages. The performance and the current consumption are stable over the whole voltage supply range. BMI323 features I2C, I3C, and SPI digital interfaces.
The BMI323 features a 2kB on-chip FIFO buffer and provides synchronized data. It supports the following features for always-on applications (e.g., activity, action, and gesture recognition) using the IMU ultra-low power domain:
- Motion detection
- Step detector
- Plug and Play step counter
- Orientation, flat
- Single tap, double tap, and triple tap detection
The sensor API can optimize the embedded feature set for wearable, hearable, and mobile device contexts.
The Bosch BMI323 Inertial Measurement Unit is offered in a miniature 2.5mm x 3.0mm x 0.83mm LGA package, ideal for space-constrained applications.