ICM‑45686 6-Axis MEMS IMU | TDK‑InvenSense, 3-axis gyroscope + 3-axis accelerometer, 6-axis inertial measurement unit featuring the patented BalancedGyro technology.™Balanced Gyroscope Architecture

II. Core Performance Parameters

form

project

Parameter Indicators

gyroscope

Measurement range: ±15.625~±4000 dps;Noise: 3.8 mdps/√Hz;Temperature drift ±0.005°/°C, TDK InvenS...

Accelerometer

Measurement range: ±2 to ±32 g; Noise: 70 μg/√Hz; Temperature drift ±0.15 mg/℃, TDK InvenS...

electric consumption

Low-noise mode, 6-axis: 0.42 mA;Low-power mode, 6-axis: 0.22 mA (220 μA), TDK InvenS...

storage

8KB FIFO, 18-19bit high-resolution output, supports FDR data rate for power reduction, TDK InvenS...

interface

Main interfaces: I3C / I2C / SPI; AUX Auxiliary Interface: SPI slave (for OIS image stabilization) or I2C master for external sensor connection; Dual-interface UI + AUX architecture

Supply voltage

1.71V‑3.6V；Built-in temperature sensor, 2-channel programmable interrupt output.

III. Functional Features

BalancedGyro™Patent gyro architecture: Extremely strong vibration suppression, reduced temperature drift, and mitigation of offset errors caused by PCB bending and SMT soldering. Compared to traditional consumer-grade gyroscopes, it significantly enhances interference resistance with TDK InvenS....。

On-chip APEX Motion Engine (hardware direct output results, low MCU load): step counter, tilt detection, single/double-click, wrist lift wake-up, motion wake-up, motion detection, free-fall detection, large-motion detection, high/low G detection, without requiring the main controller to compute posture algorithms. TDK InvenS....。

Programmable digital filter, capable of separately configuring filtering for gyroscopes and accelerometers; Supports external RTC clock input; The dual interrupt pins are compatible with various wake-up logic schemes.

The AUX auxiliary interface has two modes: ① UI + OIS mode, which connects to the lens stabilization controller;② UI + I²C-Master mode, externally connected sensor expansion system capability TDK InvenS...。

IV. Typical Application Scenarios

Wearable devices: smartwatches, fitness bands, TWS earbuds (posture tracking, step counting, wrist-up screen activation, wrist lift to turn on the display, tap gestures)

Mobile Imaging OIS Optical Image Stabilization System

Battery-powered IoT devices, remote controls, pen-like gesture detection.

Motion capture, sports equipment motion acquisition, small-scale posture modules

Various consumer electronics projects requiring low power consumption and low-noise posture detection: TDK InvenS...

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