Your gateway to smarter, more responsive, and energy-efficient wearables
Your gateway to smarter, more responsive, and energy-efficient wearables
ST unveils the ST1VAFE3BX, the first dual-function biosensor combining a vertical analog front-end (vAFE) for detecting biopotential signals and a 3-axis ultralow-power accelerometer for motion tracking. Biopotential and motion signals are fully synchronized, enabling unique in-the-edge context aware analysis and enhancing reliability of the reading by compensating for motion artifacts. Housed in a compact 2 x 2 mm package, the ST1VAFE3BX is ideal for wearables designed to unlock predictive healthcare by monitoring movement and body biosignals for diverse applications. Enjoy ultra-low power consumption, low latency, and unique context-aware edge analysis.
ST1VAFE3BX
ST1VAFE3BX
- Biosensor embedding a low-noise vAFE + ultralow-power accelerometer
- Edge AI with an embedded machine learning core
- Adjustable amplifier gain and input impedance
Application examples
How does our biosensor compare to others in the market?
| ST1VAFE3BX | COMPETITOR A | COMPETITOR B | COMPETITOR C | COMPETITOR D |
|---|---|---|---|---|---|
| Motion channel | Yes (accelerometer) | No | No | No | No |
| Optical channel | No | Yes | No | Yes | Yes |
| Biopotential channel | Yes | Yes | Yes | Yes | Yes |
| Supply current (µA) | 50 | 610 | 50 (only analog, no ADC embedded) | na | 330 (ECG only channel) |
| MLC/FSM | Yes | No | No | No | No |
| FIFO (bytes) | 256 (896 with axl) | 96k | Not present | 640 | 256 |
| Interface | I²C / SPI / I³C | I²C / SPI | Analog only, need external ADC | SPI | I²C / SPI |
| Package (mm) | LGA-12L 2x2x0.74 12L | WLCSP-49b 2.645x2.645x0.5 | WLCSP-20b 2x1.7x0.5 | WLCSP-36b 2.6x2.6 | DSBGA-42b 2.6x2.6 |
Recommended resources
ST1VAFE3BX: ST’s 1st ultra-low-power biosensor and the heart of so many new applications
ST1VAFE3BX: ST’s 1st ultra-low-power biosensor and the heart of so many new applications
Discover more about the intrinsic synchronization of biopotential and motion signals for context-aware analysis directly at the edge.
ST1VAFE3BX: first biosensor with vAFE and 3-axis accelerometer
ST1VAFE3BX: first biosensor with vAFE and 3-axis accelerometer
Download this presentation to discover our latest sensing innovation, combining two cutting-edge technologies in a single, compact package.