SCA3400‑D01 (Murata) Industrial‑Grade High‑Precision 3‑Axis Digital MEMS Accelerometer

Device Type: Industrial‑Grade High‑Precision 3‑Axis Digital MEMS Accelerometer (accelerometer‑only, no gyroscope). It adopts Murata’s 3D‑MEMS capacitive sensing technology plus dedicated ASIC chip. Featuring ultra‑low zero‑point drift and long‑term stability, it is suitable for long‑term unattended industrial applications.

SCA3400‑D01 Physical Image

Key Specifications

Measurement Range

‑ Mode 1 (Static Tilt Mode): ±1.2 g, 10 Hz low‑pass filter, for tilt‑angle measurement

‑ Mode 2 (Dynamic Vibration Mode): ±2.4 g, 80 Hz low‑pass filter, for vibration signal acquisition

‑ Sensitivity & Resolution: 15000 LSB/g, capable of capturing extremely subtle acceleration changes

‑ Output Data Rate (ODR): up to 2000 Hz

Noise & Drift (Key Selling Points)

‑ Noise Density: 20 µg/√Hz, low‑noise performance

‑ Full‑life Zero‑point Drift: X/Y‑axis ≤0.5 mg, Z‑axis ≤2 mg. Minimal drift over service life, enabling minimal or even zero recalibration for end‑equipment.

‑ Temperature Zero‑point Drift: X/Y ≤2 mg, Z ≤3 mg (‑40℃ ~ +85℃)

‑ Linearity Error under ±1.2 g range: ≤1 mg

Electrical & Package

‑ Package: 12‑pin DFL SMD surface‑mount device, dimensions 8.6 × 7.6 × 3.3 mm, reflow‑soldering compatible

‑ Supply Voltage: 3.0‑3.6 V (typical 3.3 V)

‑ Communication Interface: Safe‑SPI 2.0 digital interface

‑ Operating Temperature: ‑40℃ ~ +85℃, wide industrial temperature range

‑ Built‑in hardware self‑diagnosis for detection of MEMS, ASIC and short‑circuit faults

‑ Factory‑calibrated; calibration parameters stored in internal non‑volatile memory

Core Functions

‑ Output raw X/Y/Z three‑axis digital acceleration data for direct MCU reading to calculate tilt and inclination angles.

‑ Dual‑mode switching: static mode for tilt measurement; dynamic mode for equipment vibration data acquisition.

‑ Excellent long‑term zero‑point stability for long‑term outdoor operation without frequent zero‑point recalibration.

‑ Built‑in self‑diagnosis to report sensor operating status in real time and ensure system reliability.

‑ SPI digital output eliminates external ADC requirement and simplifies peripheral circuits. Can be combined with external gyroscopes to build high‑precision IMU inertial measurement units.

Application Scope

Structural Health Monitoring (SHM, Primary Market)

Long‑term online monitoring of deformation and inclination for bridges, steel towers, wind‑turbine towers and dams; geological landslide and foundation‑pit displacement monitoring. Ideal for long‑term unattended field deployment.

Precision Tilt & Leveling Systems

Leveling for construction machinery, surveying instruments, laser levels and automatic platform leveling; tilt safety monitoring for aerial work platforms.

IMU Inertial‑Measurement Support

Combines with external gyroscopes to form high‑precision inertial measurement units; GNSS‑aided INS navigation.

Equipment Vibration Monitoring

Vibration‑condition monitoring for industrial and mechanical equipment.

Other Applications

Attitude sensing for special‑purpose industrial robots; attitude monitoring for heavy‑duty construction machinery; high‑precision measuring instruments.