ICM-20948 is a TDK InvenSense ultra-low-power 9-axis motion tracking Inertial Measurement Unit (IMU).

The ICM-20948 is an ultra-low-power 9-axis motion tracking Inertial Measurement Unit (IMU) from TDK InvenSense. It integrates a 3-axis gyroscope and a 3-axis accelerometer, with an auxiliary I2C interface for external connection to the AK09916 3-axis magnetometer to form a complete 9DOF 9-axis sensor. Equipped with an on-chip hardware DMP (Digital Motion Processor) that executes attitude algorithm computation internally, it serves as an upgraded drop-in replacement for the classic MPU-9250.

Package: 24-pin QFN, dimensions 3×3×1mm, miniature SMD package, ideal for high-density power control boards, gimbals and flight controller devices.

II. Core Hardware Parameters

1. 3-Axis Gyroscope (Angular Velocity Detection)

Programmable full-scale range (FSR): ±250 / ±500 / ±1000 / ±2000 dpsNoise density: 0.015 dps/√Hz16-bit ADC sampling with factory-calibrated sensitivityMaximum output data rate: 1.1 kHz

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

Programmable measurement range: ±2g / ±4g / ±8g / ±16gNoise density: 100 μg/√HzShock resistance: Withstands up to 20000g mechanical shock for robust industrial reliability

3. 3-Axis Magnetometer (External AK09916)

Magnetic field measurement range: ±4900 μT16-bit digital output for heading calculation and positioning

Application Scope

1. Consumer Aerial Drones & FPV Racing Drones for Flight Controller Attitude Sensing

9-axis sensor fusion calculates yaw, roll and pitch angles to realize self-stabilized hovering, position-locked flight and attitude hold. The built-in DMP offloads computing burden from STM32 flight control MCUs.

• Inertial navigation module for compact agricultural plant protection drones and mini inspection UAVs, enabling short-term dead reckoning when GPS/Beidou GNSS signals are lost and resisting airflow turbulence at low altitude.

• Gimbal stabilization system to counteract fuselage vibration and deliver smooth aerial footage.

• Standard reference sensor for UAV aging test jigs and flight controller development boards.

2. VR/AR, Gaming Interaction & Smart Wearable Devices

• Spatial attitude tracking and 6DoF head positioning for VR headsets and AR glasses.

• Gesture motion capture for game controllers, somatosensory remote controls and wireless air mice.

• Functions for smart bands and watches: step counting, sleep monitoring, screen auto-rotation and fall detection.

• Motion capture equipment for analyzing postures during badminton, running and fitness workouts.

3. Industrial Automation & Intelligent Robots

• Inertial navigation for AGV/RGV warehouse handling robots and robotic vacuum cleaners, correcting heading drift with LiDAR and SLAM algorithms.

• Joint tilt and balance attitude detection for small collaborative robotic arms and educational humanoid robots
  
  
  

• ICM-42688

• ICM-45686

• ICM-42607-P

• ICM-42607-C
  ICM-42670-P
  ICM-42670-L