IIM-42352 TDK InvenSense SmartIndustrial™ High-Performance 3-Axis MEMS Accelerometer

 Key Parameters

- Sensing Axis: X/Y/Z 3-axis acceleration

- Selectable Full Scale Range: ±2g / ±4g / ±8g / ±16g

- Noise Density: 70 µg/√Hz (low noise, ideal for vibration acquisition)

- Frequency Response: DC ~ 4kHz (±3dB, flat wideband response, suitable for vibration spectrum analysis)

- Output Data Rate (ODR): up to 32kHz

- Resolution: 16-bit

- Supply Voltage: 1.71V ~ 3.6V; IO voltage same as VDD

- Typical Current Consumption: 0.3mA (3-axis enabled at full performance)

- FIFO Memory: 2KB, reduces host MCU read overhead and power consumption

- Communication Interfaces: I²C (1MHz) / SPI (24MHz) / I3C (up to 12.5MHz SDR)

- Operating Temperature: -40℃ ~ +105℃ (Industrial Grade)

- Package: 14-pin LGA, 2.5×3×0.91mm, compact surface-mount package

- Built-in Features: Wake-on-motion interrupt; supports external high-precision clock input to improve sampling accuracy

 Functions & Features

1. Captures 3-axis acceleration, vibration and shock signals for spectrum analysis. It is a core sensor for Condition-Based Maintenance (CBM).

2. Monitors mechanical vibration signatures to identify incipient faults of rotating equipment such as motors, pumps and compressors at an early stage.

3. Tilt detection, shock event logging and equipment attitude monitoring.

4. On-chip FIFO buffers data. Combined with motion interrupts, it eliminates continuous host polling and lowers overall system power consumption.

5. Supports high-speed sampling to capture fast transient shocks and high-frequency vibration signals.

# Applications

Primarily designed for industrial Condition-Based Maintenance (CBM):

- Vibration monitoring, equipment health status tracking and fault early warning for industrial motors, water pumps, fans and compressors

- Vibration and attitude monitoring for industrial automation, AGVs and robotic arms

- Vibration / tilt monitoring for heavy construction machinery, factory equipment, power transmission towers and outdoor installations

- Industrial IoT vibration acquisition terminals and online monitoring sensor nodes