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The ST1VAFE3BXTR is an integrated vertical Analog Front End (vAFE) and ultra-low power accelerometer biosensor from STMicroelectronics designed for wearable medical devices and consumer health monitoring scenarios.

‌ Hardware design ‌ :

1. ST1VAFE3BXTR adopts compact LGA-12L package (2mm×2mm×0.74mm) to reduce PCB space ‌.

2, ST1VAFE3BXTR support 1.62V-3.6V wide voltage input, compatible with a variety of low power system architecture ‌.

Overview

The ST1VAFE3BXTR is a biosensor with embedded vAFE channels to detect biopotential signals and a high-performance 3-axis digital accelerometer to track motion. The ST1VAFE3BXTR features a very compact low-noise, low-power vAFE design with configurable input impedance. vAFE can read analog signals that complement motion signals. vAFE and motion signals are inherently synchronized, resulting in unique context-aware edge analysis for low power consumption and minimal latency.

The ST1VAFE3BXTR sensor is embedded with advanced specialized functions for signal processing and data processing such as a finite state machine (FSM), Adaptive Self-configuration (ASC), and a machine Learning core (MLC) with exportable AI functions/filters.

ST1VAFE3BXTR feature

Dual channel for biopotential signal detection and motion tracking

Power supply voltage range: 1.62V to 3.6V

Ultra-low supply current, 50 µA (typical)

Biopotential signal detection channel with analog hub

Accelerometer channel

Embedded machine learning core

Programmable finite state machine

Adaptive Self-Configuration (ASC) based on Sensor Processing Output (FSM/MLC)

Embedded FIFO: up to 128 accelerometer and analog hub /vAFE data or 256 low resolution accelerometer data samples

High speed I²C/SPI/MIPI I3C® digital output interface

Advanced pedometer, step detector and step counter

self-inspection

Small package: 2.0 mm x 2.0 mm x 0.74 mm (Max), LGA 12 pins

Can withstand 10,000g strong impact

Meets ECOPACK and RoHS standards

Application scenario

1. ‌ medical wearable device ‌

ST1VAFE3BXTR is used for real-time electrocardiogram (ECG) monitoring, heart rate detection and other medical scenarios. It achieves high-precision biometric potential signal acquisition through differential input amplifier and 12-bit ADC ‌.

ST1VAFE3BXTR combines embedded machine learning core (MLC) and finite state machine (FSM), supports motion artifact compensation, and improves signal anti-interference ability ‌.

2. ‌ consumer health monitoring equipment ‌

Adapted to smart watches, health bands and other devices, ST1VAFE3BXTR synchronizes vAFE and accelerometer data to achieve accurate analysis of user activity status (such as step count, sleep quality) ‌.

The ST1VAFE3BXTR supports low power consumption mode (typical current 48.1μA) for extended battery life ‌.

3. ‌ Motion Tracking and Industrial sensing ‌

Integrated high-performance 3-axis digital accelerometer, the ST1VAFE3BXTR is used for motion attitude recognition (e.g. fall detection) and vibration monitoring of industrial equipment ‌.

For pricing of ST1VAFE3BXTR sensor, please contact:

Tel: +86 13410018555 (Mr. Chen)

Email: sales@hkmjd.com

Official website: www.hkmjd.com