학술논문

NeuroBus – Architecture and Communication Bus for an Ultra-Flexible Neural Interface
Document Type
Conference
Source
2023 IEEE International Symposium on Circuits and Systems (ISCAS) Circuits and Systems (ISCAS), 2023 IEEE International Symposium on. :1-5 May, 2023
Subject
Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Signal Processing and Analysis
Power demand
Power system management
Rectifiers
Programming
Digital communication
Timing
Recording
Neurorecording
biomedical
Language
ISSN
2158-1525
Abstract
This paper presents a power and area efficient digital communication interface for tiny distributed direct digitizing neural recorder ASICs on an ultra-flexible neural implant in a bus-like structure in order to realize a NeuroBus. The digital interface only requires 3 pins, does not need any preprogramming or trimming for address allocation and achieves a very low core area. The digital interface was implemented in a 1.2V 180nm CMOS technology and supports up to 100 spatially distributed neural recorder ASICs, consuming only $9\ \mu\mathrm{W}$ of power per channel on a tiny area of $2380\ \mu\mathrm{m}^{2}$.