SCH1633, Murata 6‑Axis Automotive‑Grade IMU

Model Variants: SCH1633‑D01 (Standard Factory Calibration), SCH1633‑D05 (Extended Full‑Temperature‑Range Calibration). Part of the SCH1600 series, it is a 3D‑MEMS capacitive 6‑degree‑of‑freedom inertial measurement unit integrating a 3‑axis gyroscope and a 3‑axis accelerometer manufactured by Murata.

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> Core Function: Captures angular velocity and acceleration, outputs attitude and heading data; performs dead‑reckoning and multi‑sensor fusion together with GNSS; maintains positioning during GNSS outages. Designed for automotive functional safety.

Key Specifications

1. Package: SOIC‑24, 11.8×13.4×2.9 mm, SMT surface‑mount, tape‑and‑reel delivery

2. Measurement Ranges

 ‑ Gyroscope: ±62.5 / ±125 / ±300 °/s (default ±300 °/s)

 ‑ Accelerometer: ±8 g; redundant channel dynamic maximum ±26 g

3. Critical Performance

 ‑ Gyro bias instability: 0.5 °/h

 ‑ Angular random walk: 0.03 °/√Hz

 ‑ Axis orthogonality error ≤0.3° (factory pre‑calibrated)

4. Electrical Characteristics

 ‑ Main supply: 3.0‑3.6 V; IO supply: 1.7‑3.6 V

 ‑ Interface: SafeSPI v2.0, supports 16‑bit / 20‑bit data output; with SYNC timestamp synchronization

 ‑ Operating temperature: ‑40 ℃ ~ +110 ℃

 ‑ Power consumption: Typical ≤10 mA

5. Reliability & Safety

 ‑ AEC‑Q100 Grade1 automotive qualified

 ‑ ISO 26262 ASIL‑B functional safety; 200+ internal monitoring and diagnostic signals

 ‑ RoHS compliant

 Application Scope

Automotive (Primary Applications)

‑ ADAS advanced driver‑assistance systems, autonomous driving (AD), directly mounted on zone‑architecture ECUs

‑ GNSS‑aided inertial navigation, dead‑reckoning after satellite signal loss in tunnels / underground parking garages

‑ Vehicle stability control, automatic headlamp leveling, HUD attitude correction

‑ On‑board camera image stabilization, radar attitude compensation, multi‑sensor fusion

**Non‑Automotive Extended Applications

‑ High‑precision positioning and attitude calculation for high‑end AGVs, unmanned vehicles and mobile robots

‑ Industrial inertial navigation and attitude‑measurement equipment

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> Note: This is an **automotive‑grade component with high cost**. It is generally not selected for consumer‑grade drones, and is mostly deployed in L2+ and higher‑level automotive systems.

 Quick Distinction between D01 and D05

‑ D01: Standard factory calibration, cost‑effective version for conventional automotive ECUs

‑ D05: Factory‑calibrated across full temperature range. Suitable for scenarios with strict requirements for PCB stress and temperature drift. No secondary customer temperature calibration required. Targeted for next‑generation domain‑controller architectures. Mass production started in June 2026.