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A 4×32-Channel Neural Recording System for Deep Brain Stimulation Systems

Authors
 Susie Kim  ;  Seung-In Na  ;  Youngtae Yang  ;  Hyunjong Kim  ;  Taehoon Kim  ;  Jun Soo Cho  ;  Jinhyung Kim  ;  Jin Woo Chang3  ;  and Suhwan Kim 
Citation
 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, Vol.17(1) : 129-140, 2017-02 
Journal Title
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE
ISSN
 1598-1657 
Issue Date
2017-02
Abstract
In this paper, a 4×32-channel neural recording system capable of acquiring neural signals is introduced. Four 32-channel neural recording ICs, complex programmable logic devices (CPLDs), a micro controller unit (MCU) with USB interface, and a PC are used. Each neural recording IC, implemented in 0.18 mm CMOS technology, includes 32 channels of analog front-ends (AFEs), a 32-to-1 analog multiplexer, and an analog-to-digital converter (ADC). The midband gain of the AFE is adjustable in four steps, and have a tunable bandwidth. The AFE has a mid-band gain of 54.5 dB to 65.7 dB and a bandwidth of 35.3 Hz to 5.8 kHz. The high-pass cutoff frequency of the AFE varies from 18.6 Hz to 154.7 Hz. The input-referred noise (IRN) of the AFE is 10.2 mVrms. A high-resolution, low-power ADC with a high conversion speed achieves a signal-to-noise and distortion ratio (SNDR) of 50.63 dB and a spurious-free dynamic range (SFDR) of 63.88 dB, at a sampling-rate of 2.5 MS/s. The effectiveness of our neural recording system is validated in in-vivo recording of the primary somatosensory cortex of a rat.
Full Text
https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE07118626
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
Chang, Jin Woo(장진우) ORCID logo https://orcid.org/0000-0002-2717-0101
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/195797
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