Overview
The MPU-9250 is the second generation 9-axis Motion Processing Unit™ from TDK InvenSense, designed for smartphones, tablets, wearable sensors, and other consumer markets. Although it is marked as End of Life (EOL) and not recommended for new designs, it remains a significant product in the history of motion sensing technology. The device is delivered in a 3x3x1mm QFN package, making it the world’s smallest 9-axis MotionTracking device. It combines two chips: the MPU-6500, which includes a 3-axis gyroscope, a 3-axis accelerometer, and an onboard Digital Motion Processor™ (DMP™); and the AK8963, a 3-axis digital compass.
Key Specifications
| Product | Package Size (mm) | Gyro Full Scale Range (dps) | Gyro Sensitivity (LSB/°/sec) | Gyro Rate Noise (mdps/rtHz) | Accel Full Scale Range (g) | Accel Sensitivity (LSB/g) | Digital Output | Logic Supply Voltage (V) | Operating Voltage (V) |
|---|---|---|---|---|---|---|---|---|---|
| MPU-9250 | 3 × 3 × 1 | ±250, ±500, ±1000, ±2000 | 0.01 | ±2, ±4, ±8, ±16 | ±2, ±4, ±8, ±16 | 4800 | I²C or SPI | 1.7V – VDD or VDD | 1.71 – 3.6 |
Key Features
- Compact Design: The MPU-9250 is the world’s smallest 9-axis MotionTracking device, with a size 44% smaller than the first-generation device.
- Low Power Consumption: It operates with a power consumption of only 9.3 µA and supports low power modes, including an accelerometer low power mode with as little as 6.4 µA.
- Improved Performance: Gyro noise performance is 3x better, and the compass full scale range is over 4x better than competitive offerings.
- MotionFusion: Supports InvenSense’s market-proven MotionFusion algorithms and includes run-time calibration firmware.
- Software Compatibility: Software drivers are fully compliant with Google’s Android 4.1 Jelly Bean release and support new low-power DMP capabilities.
Applications
The MPU-9250 is designed for various consumer electronics applications, including smartphones, tablets, wearable sensors, and other devices requiring precise motion tracking. Its compact size and low power consumption make it suitable for use in a wide range of portable and battery-powered devices.
Q & A
- What is the package size of the MPU-9250?
The MPU-9250 is delivered in a 3x3x1mm QFN package. - What are the key components of the MPU-9250?
The MPU-9250 combines the MPU-6500 (3-axis gyroscope, 3-axis accelerometer, and DMP) and the AK8963 (3-axis digital compass). - What is the power consumption of the MPU-9250?
The power consumption is only 9.3 µA, with support for low power modes. - Is the MPU-9250 still recommended for new designs?
No, the MPU-9250 is marked as End of Life (EOL) and is not recommended for new designs. - What digital interfaces does the MPU-9250 support?
The MPU-9250 supports I²C or SPI digital output. - What is the operating voltage range of the MPU-9250?
The operating voltage range is 1.71 – 3.6 V. - Does the MPU-9250 support MotionFusion algorithms?
Yes, it supports InvenSense’s market-proven MotionFusion algorithms. - Is the MPU-9250 compatible with Android?
Yes, the software drivers are fully compliant with Google’s Android 4.1 Jelly Bean release. - What are the improvements in gyro and compass performance compared to previous models?
The gyro noise performance is 3x better, and the compass full scale range is over 4x better than competitive offerings. - Can the MPU-9250 be used with Raspberry Pi?
Yes, the MPU-9250 can be connected and used with Raspberry Pi, as demonstrated in various tutorials and projects.
