ICM-42688-P 6-axis IMU — TDK InvenSense, gyroscope + accelerometer, SPI/I2C, low noise, LGA-14

The ICM-42688-P is a high-performance 6-axis inertial measurement unit (IMU) from TDK InvenSense, combining a 3-axis gyroscope and a 3-axis accelerometer in a single compact LGA-14 package. It is designed for applications demanding ultra-low noise, high stability, and precise motion sensing — making it a preferred choice for drone flight controllers, robotics, AR/VR devices, and industrial motion tracking systems.The ICM-42688-P features a gyroscope noise density of just 2.8m°/s/√Hz and an accelerometer noise density of 70μg/√Hz, delivering exceptional signal quality for attitude estimation and vibration analysis. It supports both SPI (up to 24MHz) and I2C (up to 1MHz) interfaces and includes a 2.5kB FIFO buffer for efficient burst data collection.Key Specifications: Part number: ICM-42688-P Manufacturer: TDK InvenSense Type: 6-axis IMU (3-axis gyroscope + 3-axis accelerometer) Gyroscope range: ±125, ±250, ±500, ±1000, ±2000 °/s Gyroscope noise density: 2.8m°/s/√Hz Accelerometer range: ±2, ±4, ±8, ±16g Accelerometer noise density: 70μg/√Hz Interface: SPI (up to 24MHz) and I2C (up to 1MHz) FIFO: 2.5kB Supply voltage: 1.71V–3.6V Operating temperature: −40°C to +85°C Package: LGA-14 (2.5 × 3.0 × 0.91mm) Key Features: Ultra-low gyroscope noise (2.8m°/s/√Hz) — precise attitude estimation for drone stabilisation and robotics High-speed SPI (24MHz) — fast data throughput for high-rate control loops 2.5kB FIFO — burst data logging without continuous MCU polling Programmable full-scale ranges — flexible configuration for both high-dynamic and precision-sensing applications Low supply voltage (1.71V) — compatible with 1.8V and 3.3V systems Compact LGA-14 package — ideal for space-constrained PCB designs in drones and wearables Applications: Drone and UAV flight controllers (attitude and heading reference) Robotics and autonomous vehicle motion sensing AR/VR headset motion tracking Industrial vibration analysis and condition monitoring Handheld stabilisers and gimbals Sports performance and activity tracking wearables Note: The ICM-42688-P is a bare SMD component in LGA-14 package — requires SMD soldering or a breakout board for prototyping. For Arduino/ESP32/STM32 development, use an ICM-42688-P breakout board. Use the TDK InvenSense driver or community Arduino libraries for integration. Decouple VDDIO and VDD with 100nF + 10μF capacitors placed close to the IC.