Year: 2025
Type: preprint
Abstract: Biological impedance (BioZ) is an information-packed modality that allows for non-invasive monitoring of health and emotional state. Currently, most research involving tissue impedance is based on bulky or fixed-purpose hardware, which limits the scope of research and the possibilities of experiments. In this work, we present HEEPidermis: a System-on-Chip (SoC) which integrates all the blocks needed for tissue impedance measurement, including two 8-bit, arbitrary-signal current DACs, two VCO-based ADCs, and a RISC-V CPU to enable on-chip feature extraction for closed-loop operation. An event-based sub-sampler improves storage and energy efficiency for long-term recording. In addition to the versatile SoC, the digital back-end and behavioral models of the analog front-end are open-source, allowing fast system-level simulations or repurposing. The SoC was taped out on TSMC 65 nm LP process.
Source: arXiv (Cornell University)
Authors: Sapriza, Juan, Grassano, Beatrice, Naclerio, Alessio, Quadri, Filippo, Terzano, Tommaso, Mallasén, David, Schiavone, Davide, Leplae, Robin, Moullet, Jérémie, Levisse, Alexandre, Müller, Christoph, Graziano, Mariagrazia, Miguez, Matías, Atienza, David
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7080691124
Cites:
Cited by:
Related to: