ICM-20948, ultra-low-power 9-axis MotionTracking IMU from TDK InvenSense

ICM-20948 is an ultra-low-power 9-axis MotionTracking IMU (Inertial Measurement Unit) from TDK InvenSense. It integrates a 3-axis gyroscope and a 3-axis accelerometer, with an auxiliary I2C interface to connect an external AK09916 3-axis magnetometer for a complete 9DOF sensor solution. Equipped with an embedded hardware DMP (Digital Motion Processor), it supports on-chip attitude calculation and serves as an upgraded replacement for the classic MPU-9250.

Package: 24-pin QFN, dimension 3×3×1 mm, compact SMD form factor, ideal for high-density power control boards, gimbals and flight controllers.

II. Core Hardware Specifications

1. 3-Axis Gyroscope (Angular Velocity Detection)

• Programmable full-scale range (FSR): ±250 / ±500 / ±1000 / ±2000 dps

• Noise density: 0.015 dps/√Hz

• 16-bit ADC sampling with factory-calibrated sensitivity

• Maximum output data rate: 1.1 kHz

2. 3-Axis Accelerometer (Gravity / Vibration Detection)

• Programmable full-scale range: ±2g / ±4g / ±8g / ±16g

• Noise density: 100 μg/√Hz

• Shock resistance: Tolerates up to 20000g mechanical shock for robust industrial performance

3. 3-Axis Magnetometer (External AK09916)

• Magnetic field measurement range: ±4900 μT

• 16-bit digital output for heading and positioning functions

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