STMicroelectronics ISM330BX Inertial Measurement Unit (IMU)
STMicroelectronics ISM330BX Inertial Measurement Unit (IMU) features a 3-axis digital accelerometer and a 3-axis digital gyroscope with triple channels. These channels process acceleration and angular rate data for motion tracking and vibration measurements, along with Qvar sensing on possibly up to three separate channels with dedicated configuration, processing, and filtering. The STMicroelectronics ISM330BX motion tracking in high-performance mode runs at 0.6mA, enabling always-on low-power features for an optimal motion experience. The ISM330BX embeds advanced dedicated features and data processing for motion processing like the finite state machine (FSM), sensor fusion low power (SFLP), adaptive self-configuration (ASC), and machine learning core (MLC) with exportable AI features/filters for IoT applications.
Features
- 3-axis accelerometer with selectable full scale of ±2/±4/±8g
- 3-axis gyroscope with extended selectable full scale of ±125/±250/±500/±1000/±2000/±4000dps
- 3-axis accelerometer with flat, wide bandwidth (2kHz) frequency response and low noise (70μg/√Hz over the SPI/I3C interface and even down to 30μg/√Hz over the TDM interface)
- Low power consumption in a high-performance mode of 0.6mA in combo mode or 0.19mA accelerometer only
- SPI/I2C and MIPI I3C® v1.1 serial interface with main processor data synchronization
- TDM controller interface
- Programmable finite state machine for accelerometer, gyroscope, and analog hub/Qvar sensor data processing with high rate at 960Hz
- Embedded sensor fusion low-power (SFLP) algorithm
- Machine learning core with exportable features and filters for AI applications
- Embedded adaptive self-configuration (ASC)
- Smart FIFO up to 4.5KB
- Embedded analog hub for analog-to-digital conversion and processing of analog input data
- Embedded Qvar: electric charge variation detection
- Embedded temperature sensor
- 1.71V to 3.6V analog supply voltage
- Independent IO supply (extended range of 1.08V to 3.6V)
- 2.5mm x 3mm x 0.71mm compact footprint
- ECOPACK and RoHS-compliant
Applications
- Condition monitoring
- Robotics
- Motion tracking
- White goods
- Hearing aids
Additional Resources
- Technical Note TN0018: Surface Mounting Guidelines for MEMS Sensors in an LGA Package
- Design Tip DT0105: 1-Point or 3-Point Tumble Sensor Calibration
- Design Tip DT0064: Noise Analysis and Identification in MEMS Sensors, Allan, Time, Hadamard, Overlapping, Modified, Total Variance
- Design Tip DT0106: Residual Linear Acceleration by Gravity Subtraction to Enable Dead-Reckoning
- Pesentation: iNEMO Inertial Modules: Evaluation Tools and GUI
- Brochures: MEMS and Sensors Smart Motion Tracking, IoT For an Enhanced User Experience
- Brochures: Sensor Libraries Software Pack for STM32Cube
Pin Connection
Development Tools
STMicroelectronics STEVAL-MKI245KA ISM330BX Evaluation Kit
Comprises an ad hoc PCB mounting the ISM330BX 3D accelerometer and a 3D gyroscope.
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