SCA3400‑D01 | Murata | Industrial‑Grade High‑Performance 3‑Axis Digital MEMS Accelerometer Sensor

 Overview

Murata industrial‑grade high‑performance 3‑axis digital MEMS accelerometer. It adopts Murata’s proprietary capacitive 3D‑MEMS technology combined with a dedicated ASIC signal‑processing chip. It features exceptional long‑term bias stability, ultra‑low noise and wide‑temperature vibration resistance. Designed for industrial high‑precision tilt sensing, inertial measurement and structural‑monitoring applications. 12‑pin SMD surface‑mount package with SPI digital output and built‑in hardware self‑diagnosis function.

2. Key Electrical & Mechanical Specifications

2.1 Measurement Range and Filtering (Two Configurable Modes)

‑ Mode 1: ±1.2 g, 10 Hz low‑pass filter (optimized for high‑precision static tilt measurement)‑ Mode 2: ±2.4 g, 80 Hz low‑pass filter (optimized for dynamic vibration measurement)‑ Resolution: 15000 LSB/g, excellent capability for resolving tiny acceleration changes‑ Output Data Rate (ODR): up to 2000 Hz

2.2 Noise and Stability (Core Advantages)

‑ Noise density: 20 µg/√Hz (industry‑leading low noise, enables precise capture of tiny deformation and tilt)‑ Full‑lifetime bias drift: X/Y ≤ 0.5 mg, Z ≤ 2 mg (almost no periodic recalibration required after factory calibration)‑ Temperature drift (‑40℃ ~ +85℃): X/Y ≤ 2 mg, Z ≤ 3 mg‑ Non‑linearity error (±1.2 g range): ≤ 1 mg

2.3 Electrical Characteristics

‑ Supply voltage: 3.0 V ~ 3.6 V‑ Communication interface: SafeSPI 2.0 digital interface‑ Start‑up time: 3 ms; valid data output: 15 ms‑ Integrated comprehensive self‑diagnosis circuitry for MEMS, ASIC and short‑circuit fault detection

2.4 Package and Environmental Conditions

‑ Dimensions: 8.6 × 7.6 × 3.3 mm‑ Package: 12‑pin pre‑molded DFL surface‑mount, compatible with standard SMT reflow soldering‑ Operating temperature: ‑40℃ ~ +85℃ (industrial wide‑temperature range)‑ Compliance: RoHS, ELV directive, lead‑free

3. Application Scope

1. Structural Health Monitoring (SHM, primary application)Deformation and vibration monitoring for bridges, wind‑turbine towers, buildings, dams and tower cranes. Long‑term outdoor deployment requiring multi‑year zero‑point stability with minimal on‑site recalibration.

2. Tilt / Leveling SystemsSurveying levels, total stations, laser land‑leveling machines, aerial work platforms and high‑precision vehicle‑mounted leveling equipment for continuous high‑precision acquisition of minor tilt angles.

3. Inertial Measurement Unit (IMU)Industrial inertial navigation, robot attitude detection, drone stabilization platforms and auxiliary positioning for AGVs. Combined with gyroscopes to form 6‑axis inertial measurement assemblies.

4. Industrial Equipment ControlVibration monitoring for CNC machine tools, attitude feedback for construction machinery, load‑attitude monitoring of heavy‑duty equipment and displacement detection for automated production lines.

5. Positioning and NavigationAuxiliary high‑precision outdoor positioning, track‑equipment attitude monitoring and inertial‑aided positioning for mobile surveying carriers.

6. Construction & Engineering ToolsLevels, inclinometers, geological survey tilt‑sensing devices and slope‑monitoring sensors for foundation pits.

4. Summary of Core Product Advantages

‑ Extremely low long‑term bias drift. One‑time factory calibration lasts for the full service life of end equipment and greatly reduces after‑sales maintenance workload.‑ Ultra‑low noise, ideal for measuring faint static acceleration and small tilt angles.‑ Wide‑temperature performance and high vibration immunity, suitable for harsh industrial environments such as construction sites and wind‑power stations.‑ Dual range‑and‑filter modes, switchable via software for static or dynamic operating conditions.‑ Hardware self‑diagnosis supports on‑line equipment fault detection.