SCH1633-D01 | Murata Automotive-Grade High-Precision 6-Axis IMU Inertial Measurement Unit (3-Axis Gyroscope + 3-Axis Accelerometer)

# SCH1633-D01

**One sentence summary:** SCH1633-D01 is a high-performance 6DoF MEMS inertial sensor from Murata’s SCH1600 series. Featuring high precision and low drift, it is AEC-Q100 Grade1 qualified and supports ISO26262 functional safety. It is designed for AD/ADAS automotive inertial navigation for autonomous driving, calculating vehicle attitude and position when GPS signal is lost.

## Key Specifications

1. Axes: 6-axis (3-axis gyroscope + 3-axis accelerometer)

2. Gyroscope measurement range: **±62.5 / ±125 / ±300 °/s, software configurable

3. Accelerometer measurement range: ±8g; auxiliary channel dynamic range up to ±26g

4. Power supply: VDD 3.0~3.6V; IO supply 1.7~3.6V, compatible with 1.8V/3.3V MCUs

5. Communication interface: SafeSPI 2.0, optional 16-bit / 20-bit digital output

6. Gyro bias instability: 0.5 °/h typical (ultra-low drift)

7. Angular random walk: as low as 0.03 °/√Hz

8. Full-temperature linearity: 0.02 °/s for gyroscope; 0.06 m/s² for accelerometer

9. Axis orthogonality error: factory calibrated ≤0.3°, eliminating customer-side orthogonality calibration

10. Bandwidth: Selectable 13 / 30 / 68 / 235 / 280 / 370 Hz

11. Operating temperature: **-40℃ ~ +110℃, AEC-Q100 Grade1**; ISO26262 ASIL-B+, can reach ASIL-D at system level

12. Package: SOIC-24 flip molded package, dimension 11.8 ×13.4 ×2.9 mm, SMD mount

13. Additional functions: Timestamp, external SYNC synchronization input, data ready signal, over 200 internal monitoring signals for self-diagnosis

14. Compliance: RoHS, ELV

## Features

1. Synchronously captures 3-axis angular velocity and 3-axis acceleration. The MCU reads data for attitude calculation and inertial navigation to continuously estimate vehicle position during GPS outages (tunnels, underground parking garages).

2. Adopts Murata 3D MEMS capacitive technology with excellent vibration suppression, delivering minimal drift under complex in-vehicle vibration conditions.

3. Orthogonality error and temperature drift are calibrated at factory, reducing customer production calibration costs.

4. Comprehensive self-diagnosis with real-time monitoring of more than 200 internal signals, including power-on self-test and continuous fault diagnosis to meet automotive functional safety requirements.

5. Supports data interpolation / decimation, timestamp and external synchronization. It enables synchronous sampling for multi-sensor fusion with cameras, radars and GNSS.

6. SMT mountable, detectable by TRI AOI, and can be directly mounted on automotive ECU PCBs.

## Applications

- Autonomous Driving (AD) and Advanced Driver Assistance Systems (ADAS) (core application)

- Automotive inertial navigation: vehicle position estimation when GPS signal is lost in tunnels and underground parking garages

- Vehicle stability control, dynamic vehicle body leveling, adaptive headlamp leveling

- On-board camera image stabilization, HUD attitude compensation

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> Extended applications: High-performance humanoid robots, high-end industrial inertial navigation (scenarios requiring functional safety and low-drift attitude measurement)

 Quick Comparison for Part Selection

- SCH1633-D01: **High-precision low-drift 6-axis IMU, max gyro range ±300 dps, AEC-Q100 Grade1 + ISO26262 functional safety, targeted at AD/ADAS automotive navigation, excellent static/low-speed attitude accuracy.**

- SCH16T-K10: 6-axis IMU with ultra-wide ±2000 dps gyro range, suitable for high-speed tumbling, FPV drones and high-speed robots; no ISO26262 functional safety.

- SCL3300-D01: Murata 3-axis inclinometer, directly outputs angle for static inclination measurement, no gyroscope.