Name: ICM-42688-P TDK InvenSense 6-Axis MEMS IMU | High-Precision Motion Sensor
Brand: TDK InvenSense
SKU: ICM-42688-P

The ICM-42688-P from TDK InvenSense is a high-precision 6-axis MEMS MotionTracking® IMU that integrates a 3-axis gyroscope and a 3-axis accelerometer in a compact 2.50 × 3.00 × 0.91 mm package. It is designed for applications that require accurate motion sensing, stable orientation measurement, and low-noise inertial data.

This device supports highly accurate external clock input, helping reduce system-level sensitivity error, improve gyroscope-based orientation measurement, and minimize output data rate variation caused by temperature or device-to-device differences. TDK positions the ICM-42688-P as its highest-performance 6-axis IMU with advanced motion features and events.

With low gyroscope noise of 2.8 mdps/√Hz, accelerometer noise of 70 µg/√Hz, selectable full-scale ranges, programmable digital filters, and advanced APEX motion functions, the ICM-42688-P is well suited for AR/VR/XR, robotics, wearables, sports devices, and high-performance IoT systems.

Key Features

Feature	Description
Sensor Type	6-axis MEMS IMU with 3-axis gyroscope and 3-axis accelerometer
Gyroscope Range	±15.6 / ±31.2 / ±62.5 / ±125 / ±250 / ±500 / ±1000 / ±2000 dps
Accelerometer Range	±2 / ±4 / ±8 / ±16 g
Gyroscope Noise	2.8 mdps/√Hz
Accelerometer Noise	70 µg/√Hz
Low-Noise 6-Axis Current	0.88 mA typical
FIFO Support	2 kB FIFO with high-resolution 20-bit FIFO data format support
Motion Functions	Pedometer, tilt detection, tap detection, wake-on-motion, raise-to-wake/sleep, significant motion detection
Digital Filters	User-programmable filters for gyroscope, accelerometer, and temperature sensor
Host Interfaces	I3C up to 12.5 MHz, I²C up to 1 MHz, SPI up to 24 MHz
Supply Voltage	VDD 1.71 V to 3.6 V; VDDIO 1.71 V to 3.6 V
Package	14-pin LGA, 2.5 × 3.0 × 0.91 mm
Target Applications	AR/VR/XR, robotics, wearables, sports devices, high-performance IoT

Product Description

The TDK InvenSense ICM-42688-P is engineered for systems that need precise, stable, and efficient inertial motion tracking. It combines low-noise gyroscope and accelerometer sensing with flexible digital output interfaces, making it easy to integrate into compact embedded systems, wearable devices, smart controllers, and robotic platforms.

A key advantage of the ICM-42688-P is its support for an external clock input. This feature helps improve orientation accuracy by reducing gyroscope sensitivity error and output data rate variation, especially in applications where timing stability is critical. The device also supports a high-resolution FIFO format, with 19-bit gyroscope data and 18-bit accelerometer data encapsulated in a 20-bit FIFO packet structure for precision motion applications.

The built-in APEX Motion Processing functions allow designers to implement motion-based features such as pedometer, tap detection, tilt detection, wake-on-motion, raise-to-wake/sleep, and significant motion detection without relying entirely on the host processor. This helps reduce system power consumption while enabling more responsive user interaction and event detection.

Applications

AR/VR/XR controllers
Head-mounted displays
Robotics and motion control systems
Wearable electronics
Sports and fitness devices
High-performance IoT devices
Smart handheld devices
Motion tracking and orientation sensing modules

Summary

The ICM-42688-P is a strong choice for engineers who need a compact, high-accuracy 6-axis IMU with advanced motion detection features. Its low-noise gyroscope and accelerometer, wide selectable measurement ranges, external clock input, programmable filters, and high-speed digital interfaces make it suitable for demanding applications such as AR/VR, robotics, wearables, and high-performance IoT products.