Accelerometer MPU-9265 (MPU-6500)

Buy the MPU-9250 (MPU-6500) high precision 9-axis sensor to stabilize your drone and robots

One chip combines a gyroscope, accelerometer and magnetometer. The 16-bit ADC and flexible measurement ranges ensure ideal operation of navigation systems in any conditions.

The American company InvenSense, founded in 2003, is a leader in the field of MotionTracking solutions. In 2017, it became part of the TDK corporation. InvenSense makes motion sensors for smartphones, wearables and drones. The range includes 6-axis (ICM-20689) and 9-axis (ICM-20948) chips. Microphones and ultrasonic sensors are also produced.

• 9 measurement axes: gyroscope, accelerometer and compass.
• Compact chip in a 3x3x1 mm package for miniature devices.
• Gyro range up to ±2000°/s for fast turns.
• Accelerometer range up to ±16 g for sharp maneuvers.
• Built-in DMP reduces the load on the flight controller.

How does a 9-axis motion sensor work?

The chip continuously reads angular velocity (gyroscope), linear acceleration (accelerometer) and magnetic field direction (compass). All three 16-bit ADCs convert analog signals to digital data. The built-in DMP processor performs data fusion (sensory fusion) on the sensor itself. The controller receives ready-made quaternions or Euler angles via the I2C or SPI bus. This greatly simplifies the drone stabilization code.

Technical characteristics and functionality

The MPU-9250 chip actually combines the 6-axis MPU-6500 (gyroscope + accelerometer) and magnetometer. The module is powered from 3 to 5 V. The logic part voltage can be reduced to save energy.

Built-in 16-bit ADCs measure each axis. Gyro ranges are switchable between ±250, ±500, ±1000 and ±2000°/s. Accelerometer ranges: ±2, ±4, ±8 and ±16 g. The magnetometer measures fields up to ±4800 µT. The IIC (up to 400 kHz) and SPI (up to 20 MHz data reading) protocols are supported.

The module is supplied on a board with gold-plated contacts and a pin pitch of 2.54 mm. A built-in 512-byte FIFO buffer helps accumulate data. DMP can detect gestures and count steps, offloading the main microcontroller.

• Chip: MPU-9250
• Power supply: 3-5V (internal low dropout regulator)
• Communication: standard IIC/SPI communication protocol
• On-chip 16-bit ADC, 16-bit data output
• Gyro Range: ±250, 500, 1000, 2000 °/s
• Acceleration range: ±2, ±4, ±8, ±16 g
• Magnetic field range: ±4800 µT
• Pressure range: 300-1100 hPa
• Using immersion gold PCB, machine welding process to ensure quality
• Lead pitch: 2.54 mm