STMicroelectronics ASM330LHHXG1 inertial measurement unit

STMicroelectronics’ ASM330LHHXG1 inertial measurement unit (IMU) for automotive applications combines in-sensor AI with enhanced low-power operation and an operating temperature up to 125°C for use in harsh environments.

The IMU contains a 3-axis accelerometer and 3-axis gyroscope and draws less than 800 µA with both sensors running, cutting the system power budget and encouraging use in always-aware applications. In-sensor AI leverages the built-in machine-learning core (MLC) and finite state machine (FSM), offloading the host processor and enabling low-latency, energy-efficient event detection and classification. The extended temperature range gives the flexibility to deploy smart sensors containing the IMU in harsh locations including near engine components, in direct sunlight or whenever onboard power dissipation might increase the temperature above standard operating levels.

With the integrated MLC and FSM, the unit handles applications that need fast and deterministic response with minimal power demand. These include navigation assistance and telematics, theft prevention, impact detection and motion-activated functions.

While the IMU has dual operating modes that let designers optimise the data-update rate and power consumption, the accelerometer and gyroscope maintain high stability over time and temperature. The accelerometer has a selectable full-scale range of ±2/±4/±8/±16g, while the gyroscope’s angular rate can be set to ±125, ±250, ±500, ±1000, ±2000 or ±4000 degrees/sec. The IMU is AEC-Q100 qualified.