TY  - BOOK
AU  - He,Yuming
AU  - Corradi,Federico
AU  - Shi,Chengyao
AU  - van der Ven,Stan
AU  - Timmermans,Martijn
AU  - Stuijt,Jan
AU  - Detterer,Paul
AU  - Harpe,Pieter
AU  - Lindeboom,Lucas
AU  - Hermeling,Evelien
AU  - Langereis,Geert
AU  - Chicca,Elisabetta
AU  - Liu,Yao-Hong
TI  - An Implantable Neuromorphic Sensing System Featuring Near-sensor Computation and Send-on-Delta Transmission for Wireless Neural Sensing of Peripheral Nerves
PY  - 2022///-10
KW  - Text
KW  - local
N1  - /pmc/articles/PMC7614138; /pubmed/36741239
N2  - This paper presents a bio-inspired event-driven neuromorphic sensing system (NSS) capable of performing on-chip feature extraction and "send-on-delta" pulse-based transmission, targeting peripheral-nerve neural recording applications. The proposed NSS employs event-based sampling which, by leveraging the sparse nature of electroneurogram (ENG) signals, achieves a data compression ratio of >125×, while maintaining a low normalized RMS error of 4% after reconstruction. The proposed NSS consists of three sub-circuits. A clockless level-crossing (LC) ADC with background offset calibration has been employed to reduce the data rate, while maintaining a high signal to quantization noise ratio. A fully synthesized spiking neural network (SNN) extracts temporal features of compound action potential signals consumes only 13 μW. An event-driven pulse-based body channel communication (Pulse-BCC) with serialized address-event representation encoding (AER) schemes minimizes transmission energy and form factor. The prototype is fabricated in 40-nm CMOS occupying a 0.32-mm(2) active area and consumes in total 28.2 μW and 50 μW power in feature extraction and full diagnosis mode, respectively. The presented NSS also extracts temporal features of compound action potential signals with 10-μs precision
UR  - http://dx.doi.org/10.1109/JSSC.2022.3193846
ER  -