Tunnel fet-based ultra-low power, low-noise amplifier design for biosignal acquisition

Huichu Liu, Suman Datta, Mahsa Shoaran, Alexandre Schmid, Xueqing Li, Vijaykrishnan Narayanan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations

Abstract

Ultra-low power circuit design techniques have enabled rapid progress in biosignal acquisition. The design of a multi-channel biosignal recording system is a challenging task, considering the low amplitude of neural signals and limited power budget for an implantable system. The front-end low-noise amplifier is a critical component with respect to overall power consumption and noise of such system. In this paper, we present a new design of III-V Heterojunction TFET (HTFET)-based neural amplifier employing a telescopic operational transconductance amplifier (OTA) for multichannel neural spike recording. Exploiting the unique device characteristics of HTFETs, our simulation shows that the proposed amplifier exhibits a midband gain of 39 dB, a gain bandwidth of 12 Hz-2.1 kHz, and an input-referred noise of 6.27 pVrms, consuming 5 nW of power at a 0.5 V supply voltage. Using the proposed HTFET amplifier, a noise efficiency factor (NEF) of 0.64 is achieved, which is significantly lower than the CMOS-based theoretical limit. Design tradeoffs related to gain, power and noise requirements are investigated, based on a comprehensive electrical noise model of HTFET and compared with the baseline Si FinFET design. Copyright

Original languageEnglish (US)
Title of host publicationISLPED 2014 - Proceedings of the 2014 International Symposium on Low Power Electronics and Design
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages57-62
Number of pages6
ISBN (Print)9781450329750
DOIs
StatePublished - Jan 1 2014
Event2014 ACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED 2014 - San Diego, CA, United States
Duration: Aug 11 2014Aug 13 2014

Publication series

NameProceedings of the International Symposium on Low Power Electronics and Design
ISSN (Print)1533-4678

Other

Other2014 ACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED 2014
CountryUnited States
CitySan Diego, CA
Period8/11/148/13/14

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Liu, H., Datta, S., Shoaran, M., Schmid, A., Li, X., & Narayanan, V. (2014). Tunnel fet-based ultra-low power, low-noise amplifier design for biosignal acquisition. In ISLPED 2014 - Proceedings of the 2014 International Symposium on Low Power Electronics and Design (pp. 57-62). (Proceedings of the International Symposium on Low Power Electronics and Design). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1145/2627369.2627631