2-in-1 MEMS accelerometer for wearables and trackers

STMicroelectronics has introduced a new MEMS accelerometer, the LSM6DSV80X, which combines two accelerometer structures to provide more accurate sensing capabilities in wearable devices. This innovative sensor features structures for 16g and 80g full-scale sensing, along with a gyroscope offering up to 4000dps and edge AI processing. All of this is packed into a compact 14-pin LGA package measuring just 2.5mm x 3mm x 0.86mm.

One of the key advantages of the LSM6DSV80X is its dual accelerometer setup, which allows for precise measurement of a wide range of events, from subtle movements to intense impacts. The low-g accelerometer is ideal for tracking activities like walking, running, and gestures, while the high-g accelerometer excels at capturing energetic movements that may overwhelm traditional sensors.

Applications for the LSM6DSV80X extend to various sports equipment, enabling performance monitoring during activities like running, jumping, and even boxing. With the ability to record impacts exceeding 60g, athletes can leverage this technology to enhance their training, improve strength and power, and detect potential concussions for increased safety.

In addition to its accelerometer capabilities, the LSM6DSV80X integrates a MEMS gyroscope and digital processing, featuring sensor fusion low power (SFLP) for spatial orientation and gesture detection. The sensor also includes a machine-learning core (MLC) and finite-state machine (FSM) for edge AI processing, enhancing performance and efficiency by processing data locally.

Furthermore, the sensor offers adaptive self-calibration (ASC) to accommodate various activity scenarios, providing a comprehensive solution for sports training analysis. STMicroelectronics supports the LSM6DSV80X with the ST MEMS Studio, a user-friendly graphical environment for sensor configuration, MLC decision tree training, and testing. Evaluation boards like the Professional MEMS tool (STEVAL-MKI109D) and SensorTile.box PRO (STEVAL-MKBOXPRO) are available to facilitate sensor integration.

For those interested in exploring the capabilities of the LSM6DSV80X, samples are currently available, with volume production expected to commence by the end of April 2025. This advanced MEMS accelerometer represents a significant advancement in wearable sensor technology, offering enhanced accuracy and performance for a wide range of applications, particularly in the realm of sports and fitness.