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E-mail:jl.dong@mtmems.com
Address:No.1, Meitai Road, Luquan District, Shijiazhuang City
Micro-Inertial Measurement Unit (IMU Module)
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Product Classification:
Product Introduction
The MSI371K micro inertial measurement unit is a high-precision, wide-range, miniaturized inertial component that integrates three-axis gyroscopes and three-axis accelerometers. By compensating for zero bias and scale factors across the entire temperature range for each axis, it can provide highly accurate angular rate and linear acceleration measurements over a broad measurement range.
Performance metrics
| Spinning top | Accelerometer | System | ||||||
| Measurement range | ±450 | degrees per second | Measurement range | ±50 | g | Supply voltage | 5 ± 0.3 | v |
| Full-temperature zero bias | ≤50 | °/h | Full-temperature zero bias | ≤2 | mg | Operating temperature range | -45~85 | Celsius |
| Angular Random Walk | ≤0.15 | °/√h | Random walk with speed | ≤0.02 | m/s/√h | Shock-resistant | ≥2000 | g |
| Zero-bias instability | ≤2 | °/h | Zero-bias instability | ≤0.02 | mg | Vibration | ≥20 | grams |
| Zero-bias stability (1a) | ≤5 | °/h | Zero-bias stability | ≤0.1 | mg | Size | 44.8 × 38.6 × 13.5 | mm |
| Zero-bias repeatability (1a) | ≤3 | °/h | Zero-bias repeatability | ≤0.1 | mg | Weight | ≤35 | g |
| Nonlinear scale factor | ≤30 | parts per million | Nonlinear scale factor | ≤100 | parts per million | Interface Type | RS422 | -- |
| Bandwidth (configurable) | 150 | Hertz | Bandwidth (configurable) | 150 | Hertz | Output method | J30J-9ZKP4L | -- |
Application areas

● Inertial Navigation: Inertial Guidance, Integrated Navigation, Platform Stabilization
● Short-term navigation: Flight control, telemetry and remote control
● Attitude control: drone and antenna orientation
Main dimensions and interface definitions

| Codename | Value (mm) |
| A1 | 13.5 ± 0.1 |
| A1 | 5.2 ± 0.1 |
| D | 44.8 ± 0.1 |
| D1 | 26.0 ± 0.2 |
| And E | 38.6 ± 0.1 |
| G | 7.6 ± 0.2 |
| P | 4.2 ± 0.1 |
| q1 | 29.3 ± 0.1 |
| q2 | 35.9 ± 0.1 |
| Pin number | Definition | Instructions |
| 1 | +5V | Power positive |
| 2 | GND | Power ground |
| 3 | RX+ | RS422 receive positive |
| 4 | RX- | RS422 receives negative. |
| 5 | TX- | RS422 sends negative |
| 6 | TX+ | RS422 transmit positive |
| 7, 8, 9 | N/A | N/A |
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