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Related Experiment Video

Updated: Feb 26, 2026

Optogenetic Stimulation of the Auditory Nerve

Optogenetic Stimulation of the Auditory Nerve

Published on: October 8, 2014

An Auditory Nerve Stimulation Chip with Integrated AFE, Sound Processing, and Power Management for Fully Implantable

Nijad Anabtawi¹, Sabrina Freeman², Rony Ferzli³

¹Intel Corporation, Chandler, AZ and the Department of Electrical Engineering, Arizona State University, Tempe, AZ.

... IEEE-EMBS International Conference on Biomedical and Health Informatics. IEEE-EMBS International Conference on Biomedical and Health Informatics

|July 14, 2017

Summary

This study introduces an integrated system-on-chip for fully implantable cochlear implants, featuring advanced sound processing and a novel power supply for enhanced auditory nerve stimulation.

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Last Updated: Feb 26, 2026

Optogenetic Stimulation of the Auditory Nerve

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Published on: October 8, 2014

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation

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The Miniature Pig: A Large Animal Model for Cochlear Implant Research

The Miniature Pig: A Large Animal Model for Cochlear Implant Research

Published on: July 28, 2022

Area of Science:

Biomedical Engineering
Electrical Engineering
Materials Science

Background:

Cochlear implants are crucial for restoring hearing in individuals with severe hearing loss.
Existing cochlear implant systems often face challenges with miniaturization and power management.
Fully implantable systems offer improved aesthetics and user experience but require highly integrated components.

Purpose of the Study:

To develop a compact and efficient system-on-chip (SoC) for a fully implantable cochlear implant.
To integrate all necessary components, including acoustic sensing, signal processing, nerve stimulation, and power management, onto a single chip.
To validate the performance of the integrated system through post-layout simulations.

Main Methods:

Design and implementation of a 4-channel digital sound processing unit.
Development of auditory nerve stimulation circuitry.
Integration of an acoustic sensor front-end.
Creation of a digital, switched-mode, single-inductor dual-output power supply for on-chip voltage regulation and battery charging.
Fabrication using 14nm CMOS technology.

Main Results:

Successful integration of acoustic sensing, digital sound processing, nerve stimulation, and power management on a single chip.
The power supply generates 0.4 V for digital blocks and 0.9 V for analog blocks and battery charging.
All passive components, including the inductor, are integrated on-chip.
Post-layout simulations confirmed the functionality of the designed system.

Conclusions:

The developed system-on-chip represents a significant advancement towards fully implantable cochlear implant solutions.
The integrated design offers miniaturization and improved power efficiency.
This technology has the potential to enhance the quality of life for individuals with hearing impairments.