STMicroelectronics Launches New Bio-Sensing Chip for Wearables

Solution Introduction

STMicroelectronics has introduced the ST1VAFE3BX, a cutting-edge bio-sensing chip designed to enhance the functionality and efficiency of next-generation wearable health devices. This chip integrates high-precision biopotential sensing, inertial measurement, and AI-powered activity detection, all within a compact form factor optimized for low power consumption. The ST1VAFE3BX is set to revolutionize wearable health technology by expanding its application range beyond traditional wrist-based devices to other areas of the body, such as intelligent patches for lifestyle and medical monitoring.

Details

The ST1VAFE3BX combines an analog front-end (vAFE) for biopotential sensors, offering precise detection of vital signs, with a built-in accelerometer for motion sensing. The chip operates with a wide input range and provides programmable gain and 12-bit ADC resolution. It supports a maximum output data rate of 3200Hz, making it suitable for a variety of biopotential measurements, including ECG, EEG, and muscle activity monitoring. The device's low typical operating current of 50µA can be reduced to 2.2µA in power-saving mode, enhancing battery life for wearables. The chip’s integration of an AI core allows for autonomous activity detection, reducing the need for host CPU processing and further minimizing power consumption.

Applications

The ST1VAFE3BX offers significant opportunities for the development of innovative healthcare and fitness products. Companies like BM Innovations GmbH and Pison are already leveraging the chip to develop advanced athlete performance monitoring systems, including ECG analysis in chest bands and small patches. The chip's ability to combine motion and body signal data enables precise, context-aware health tracking. Additionally, its integration with AI algorithms opens the door for new applications such as smartwatch gesture recognition, cognitive performance monitoring, and enhanced user experiences in neurological health wearables. Manufacturers can also extend their product offerings to include functionality for ECG, EEG, SCG, and ENG, paving the way for more affordable, reliable, and user-friendly wellness devices.