The 3-Space™ Embedded delivers attitude, heading, and motion measurements from a surface-mount AHRS/IMU/VRU that combines gyroscope, accelerometer, and magnetometer sensing with barometric pressure measurement. At 23 x 23 x 1.95 mm and 1.3 grams, it is ideal for compact unmanned vehicle and robotics electronics.
The standard accelerometer covers selectable ranges from ±2g to ±16g. An optional high-range accelerometer extends coverage to ±320g, with automatic sensor selection for impact and high-dynamics measurements. QGRAD3 or Extended Kalman filtering delivers update rates up to 2,000 Hz, and the onboard World Magnetic Model provides true, magnetic, or grid north heading.
Castellated pads accommodate surface-mount assembly or optional through-hole mounting. Host interfaces include USB, SPI, I2C, and asynchronous serial. A dedicated evaluation kit allows developers to test the sensor before committing it to an OEM design.
Specifications:
| Dimensions | 23 x 23 x 1.95 mm |
| Weight | 1.3 g |
| Supply voltage | 3.3–6.0 V |
| Current consumption | 10 mA minimum in low-power modes; 55 mA maximum at full performance |
| Interfaces | USB 2.0, SPI, I2C, asynchronous serial |
| Filter update rate | Up to 2,000 Hz (QGRAD3, Kalman AHRS, or IMU mode) |
| Dynamic orientation accuracy | ±1° (average when calibrated) |
| Orientation range | 360° about all axes |
| Accelerometer ranges | ±2 / ±4 / ±8 / ±16g |
| Gyroscope ranges | ±250 / ±500 / ±1,000 / ±2,000 / ±4,000°/s |
| Gyroscope bias stability | 1.5°/hr (average across axes at 25°C) |
| Orientation outputs | Quaternion, Euler angles, rotation matrix, axis angle, two-vector |
| High-range accelerometer option | ±32 / ±64 / ±128 / ±256 / ±320g |
| SPI / I2C clock rates | Up to 10 MHz / 4 MHz |
Maximum sensor update rates depend on communication and filter settings.
