TDK‑InvenSense 6‑Axis MEMS Inertial Measurement Unit (IMU)

It is a 6‑Axis MEMS Inertial Measurement Unit (IMU) manufactured by TDK‑InvenSense. It integrates a 3‑axis accelerometer and a 3‑axis gyroscope on‑chip. The suffix‑L denotes the LGA‑14 package variant, with dimensions of 2.5 × 3.0 mm and a thickness of 0.76 mm. As a low‑power consumer‑grade IMU, it acquires object acceleration and angular velocity for attitude and motion‑state computation.

Key Parameters

Supply voltage ranges from 1.71 V to 3.6 V, compatible with lithium‑battery‑powered systems. Operating temperature: ‑40 ℃ to +85 ℃.

The accelerometer supports multiple full‑scale ranges up to ±16 g, while the gyroscope reaches a maximum of ±2000 dps. All outputs are 16‑bit digital signals. A 2.25 KB on‑chip hardware FIFO buffer eases the reading load of the host MCU.

Communication interfaces include I2C and SPI. Typical current consumption for simultaneous 6‑axis operation is 0.55 mA, and sleep standby current is only 3.5 μA, delivering outstanding low‑power performance.

It features the built‑in APEX motion‑engine hardware, implementing step counting, tilt detection, motion wake‑up, free‑fall detection and low‑gravity detection without heavy MCU computation. It offers high shock resistance up to 20000 g and integrates programmable digital filters.

Applications

Targeting low‑power consumer electronics:Primarily for wearable devices such as smart bands, smart watches and health‑focused wearables to realize step counting, sleep monitoring and attitude recognition.For TWS Bluetooth earbuds, it enables wear‑state detection, tap‑gesture recognition and motion wake‑up.

Secondly for compact interactive devices: game controllers and air‑pointing remote controls to capture hand‑rotation attitude; AR glasses for head‑pose tracking.

It is also deployed in small‑scale IoT hardware such as asset‑tracking tags for vibration, drop and handling‑event monitoring, as well as handheld portable devices for screen rotation and motion detection.

It can be adopted in small‑sized drones, mini flight controllers and compact robots for attitude sensing. Nevertheless, this is a consumer‑grade IMU and not qualified for stringent industrial or automotive environments and cannot replace industrial‑grade IMUs. It is also widely used in mobile phones for auxiliary attitude sensing and image‑stabilization functions.