Subthreshold operation of Nauta's operational transconductance amplifier

Astria Nur Irfansyah; Andrew Nicholson; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann

doi:10.1109/NEWCAS.2015.7182065

Subthreshold operation of Nauta's operational transconductance amplifier

Astria Nur Irfansyah, Andrew Nicholson, Julian Jenkins, Tara Julia Hamilton, Torsten Lehmann

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

3 Citations (Scopus)

Abstract

This paper investigates the subthreshold operation of the inverter-based operational transconductance amplifier for the potential use in very low power data conversion systems. Circuit analysis and sizing strategies are presented, and a first order continuous-time delta-sigma modulator circuit is used as a case study to verify the performance of the amplifier when operating in subthreshold region. We demonstrate experimental results using a digitally configurable Nauta operational transconductance amplifier implemented in a 180nm CMOS process which shows up to 97.76 percent power reduction when 600mV is used instead of 1.8V as supply with better figure of merit and without significant signal-to-noise distortion ratio penalty highlighting its significant potential at subthreshold operation.

Original language	English
Title of host publication	Conference Proceedings: NEWCAS 2015: 13th IEEE International New Circuits and Systems Conference (NEWCAS), June 7-10 2015, Grenoble, France
Publisher	IEEE
Number of pages	4
DOIs	https://doi.org/10.1109/NEWCAS.2015.7182065
Publication status	Published - 2015
Event	IEEE International New Circuits and Systems Conference - Duration: 7 Jun 2015 → …

Conference

Conference	IEEE International New Circuits and Systems Conference
Period	7/06/15 → …

Keywords

digital integrated circuits
inverters
operational amplifiers
transconductance

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10.1109/NEWCAS.2015.7182065

Cite this

@inproceedings{e614bd28076a4e578bacff8051176d2d,

title = "Subthreshold operation of Nauta's operational transconductance amplifier",

abstract = "This paper investigates the subthreshold operation of the inverter-based operational transconductance amplifier for the potential use in very low power data conversion systems. Circuit analysis and sizing strategies are presented, and a first order continuous-time delta-sigma modulator circuit is used as a case study to verify the performance of the amplifier when operating in subthreshold region. We demonstrate experimental results using a digitally configurable Nauta operational transconductance amplifier implemented in a 180nm CMOS process which shows up to 97.76 percent power reduction when 600mV is used instead of 1.8V as supply with better figure of merit and without significant signal-to-noise distortion ratio penalty highlighting its significant potential at subthreshold operation.",

keywords = "digital integrated circuits, inverters, operational amplifiers, transconductance",

author = "Irfansyah, {Astria Nur} and Andrew Nicholson and Julian Jenkins and Hamilton, {Tara Julia} and Torsten Lehmann",

year = "2015",

doi = "10.1109/NEWCAS.2015.7182065",

language = "English",

booktitle = "Conference Proceedings: NEWCAS 2015: 13th IEEE International New Circuits and Systems Conference (NEWCAS), June 7-10 2015, Grenoble, France",

publisher = "IEEE",

note = "IEEE International New Circuits and Systems Conference ; Conference date: 07-06-2015",

}

Irfansyah, AN, Nicholson, A, Jenkins, J, Hamilton, TJ & Lehmann, T 2015, Subthreshold operation of Nauta's operational transconductance amplifier. in Conference Proceedings: NEWCAS 2015: 13th IEEE International New Circuits and Systems Conference (NEWCAS), June 7-10 2015, Grenoble, France. IEEE, IEEE International New Circuits and Systems Conference, 7/06/15. https://doi.org/10.1109/NEWCAS.2015.7182065

Subthreshold operation of Nauta's operational transconductance amplifier. / Irfansyah, Astria Nur; Nicholson, Andrew; Jenkins, Julian et al.
Conference Proceedings: NEWCAS 2015: 13th IEEE International New Circuits and Systems Conference (NEWCAS), June 7-10 2015, Grenoble, France. IEEE, 2015.

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

TY - GEN

T1 - Subthreshold operation of Nauta's operational transconductance amplifier

AU - Irfansyah, Astria Nur

AU - Nicholson, Andrew

AU - Jenkins, Julian

AU - Hamilton, Tara Julia

AU - Lehmann, Torsten

PY - 2015

Y1 - 2015

N2 - This paper investigates the subthreshold operation of the inverter-based operational transconductance amplifier for the potential use in very low power data conversion systems. Circuit analysis and sizing strategies are presented, and a first order continuous-time delta-sigma modulator circuit is used as a case study to verify the performance of the amplifier when operating in subthreshold region. We demonstrate experimental results using a digitally configurable Nauta operational transconductance amplifier implemented in a 180nm CMOS process which shows up to 97.76 percent power reduction when 600mV is used instead of 1.8V as supply with better figure of merit and without significant signal-to-noise distortion ratio penalty highlighting its significant potential at subthreshold operation.

AB - This paper investigates the subthreshold operation of the inverter-based operational transconductance amplifier for the potential use in very low power data conversion systems. Circuit analysis and sizing strategies are presented, and a first order continuous-time delta-sigma modulator circuit is used as a case study to verify the performance of the amplifier when operating in subthreshold region. We demonstrate experimental results using a digitally configurable Nauta operational transconductance amplifier implemented in a 180nm CMOS process which shows up to 97.76 percent power reduction when 600mV is used instead of 1.8V as supply with better figure of merit and without significant signal-to-noise distortion ratio penalty highlighting its significant potential at subthreshold operation.

KW - digital integrated circuits

KW - inverters

KW - operational amplifiers

KW - transconductance

UR - http://handle.uws.edu.au:8081/1959.7/uws:32602

UR - http://newcas2015.sciencesconf.org/

U2 - 10.1109/NEWCAS.2015.7182065

DO - 10.1109/NEWCAS.2015.7182065

M3 - Conference Paper

BT - Conference Proceedings: NEWCAS 2015: 13th IEEE International New Circuits and Systems Conference (NEWCAS), June 7-10 2015, Grenoble, France

PB - IEEE

T2 - IEEE International New Circuits and Systems Conference

Y2 - 7 June 2015

ER -

Subthreshold operation of Nauta's operational transconductance amplifier

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