Technical Characteristics
Customizable precision and wide range of applications
The LKF-MSU102 MEMS Inertial Measurement Unit is a compact, high-precision, high-reliability, and cost-effective three-axis MEMS inertial module capable of measuring the three-dimensional angular velocity and acceleration of a moving carrier. The module performs full-temperature compensation for parameters including bias, scale factor, non-orthogonality, and acceleration-related errors, ensuring long-term measurement accuracy.
Advanced processes and technologies
The LKF-MSU102 MEMS inertial unit integrates high-performance MEMS gyroscopes and MEMS accelerometers within an independent structure. The gyroscopes and accelerometers used in this unit represent the cutting edge of MEMS inertial device technology. The tri-axis MEMS gyroscopes are sensitive to angular motion of the carrier, while the tri-axis MEMS accelerometers capture linear acceleration. Internal compensation is applied across the full temperature range for bias, scale factor, non-orthogonality, and acceleration-related terms, ensuring sustained high accuracy. Additionally, the unit features a sealed design to maintain precise measurements of angular and linear motion even under harsh environmental conditions, offering users a cost-effective and highly reliable solution.
Table 1 Performance Parameters Of LKF-MSU102
| MEMS Gyroscope | Note |
| Range | -500°/s~+500°/s | |
| Bias over full temperature range | ≤0.15°/s | |
| Bias stability | ≤15°/h | 10s smoothing |
| Bias instability | ≤5°/h | Allan |
| Bias repeatability | ≤15°/h | |
| Angular Random Walk | ≤0.5°√h | |
| Scale factor nonlinearity | ≤100ppm | |
| Adjustable bandwidth | ≥100Hz | |
| MEMS Accelerometer | |
| Range | -20g~+20g | |
| Bias | ≤5mg | |
| Bias stability | ≤0.2mg | 10s smoothing |
| Bias instability | ≤0.05mg | Allan |
| Bias repeatability | ≤0.2mg | |
| Velocity Random Walk | ≤0.05m/s/√h | |
| Bias instability(Allan) | ≤0.05mg | |
| Scale factor nonlinearity ( ±1g) | ≤300ppm | |
| Scale factor nonlinearity ( ±1g) | ≤200ppm | |
| Adjustable bandwidth | ≥100Hz | |
| System | |
| Power Supply | 5V±0.2V | |
| Operating Temperature | -40℃~+80℃ | |
| Shock | ≥2000g | |
| Vibration | 6.06grms | 20~2000Hz |
| Size | 22.4mm×22.5mm×9mm | |
| Weight | ≤20g | |
| Adjustable Data Update Rate | 1000Hz | |
| Interface Type | UART | LVTTL level |
Table 2 MSU102 MEMS IMU Pin Definition
| Wire Harness | No. | Color | Definition | Connector | No. |
| Wire Harness (Diameter0.07 mm) | 1 | Red | +5V | DB9_M1 | 6 |
| 2 | Black | GND | 5 |
| 3 | Orange | UART_TX | 1 |
| 4 | Yellow | UART_RX | 2 |
| 5 | Blue | PPS | 3 |
| 6 | White | TOV | 4 |
Main features
Full temperature compensation
Excellent temperature performance
Data update rate up to 1000 Hz
Configurable baud rate, up to 921.6 kbps
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Supports software online upgrade
Applications
Flight control
Autonomous driving
Attitude reference
Mobile mapping
Fig. 1 Outline Structure Dimension Diagram
