A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers

Ricardo Póvoa, António Canelas, Ricardo M. F. Martins, Nuno Horta, Nuno Lourenço, João Goes

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

Abstract

This paper presents an innovative topology for an operational transconductance amplifier (OTA) based on a CMOS inverter topology. This OTA is proper for biomedical and healthcare circuits and systems, due to a low level of noise and power consumption, together with elevated gain. This is a fully-differential implementation, with a double CMOS branch biased by two pairs of voltage-combiners, in both NMOS and PMOS configurations, highly improving the gain and the gain-bandwidth product, improving the OTA energy-efficiency. An elevated figure-of-merit is achieved, i.e., a 1628 MHz×pF/mA, and a gain of 53 dB, under a voltage supply source of 2 V. The results are compared with state-of-the-art OTAs in this field of study and the potential is fully fulfilled with a state-of-the-art layout-aware optimization tool, AIDA, particularly important to overcome the device stacking problematic in lower supplies.

Original languageEnglish
Title of host publicationSMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages161-164
Number of pages4
ISBN (Electronic)9781728112015
DOIs
Publication statusPublished - 1 Jul 2019
Event16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2019 - Lausanne, Switzerland
Duration: 15 Jul 201918 Jul 2019

Conference

Conference16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2019
CountrySwitzerland
CityLausanne
Period15/07/1918/07/19

Fingerprint

Signal receivers
Operational amplifiers
Inverter
transconductance
low noise
Healthcare
CMOS
Receiver
receivers
amplifiers
Topology
topology
Voltage
Electric potential
Energy efficiency
Stacking
electric potential
Electric power utilization
Energy Efficiency
figure of merit

Keywords

  • CMOS
  • Differential
  • Energy-Efficiency
  • Inverter-Based
  • Low-Current
  • On-chip
  • OTA
  • Voltage-Combiners

Cite this

Póvoa, R., Canelas, A., Martins, R. M. F., Horta, N., Lourenço, N., & Goes, J. (2019). A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers. In SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings (pp. 161-164). [8795248] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SMACD.2019.8795248
Póvoa, Ricardo ; Canelas, António ; Martins, Ricardo M. F. ; Horta, Nuno ; Lourenço, Nuno ; Goes, João. / A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers. SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 161-164
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abstract = "This paper presents an innovative topology for an operational transconductance amplifier (OTA) based on a CMOS inverter topology. This OTA is proper for biomedical and healthcare circuits and systems, due to a low level of noise and power consumption, together with elevated gain. This is a fully-differential implementation, with a double CMOS branch biased by two pairs of voltage-combiners, in both NMOS and PMOS configurations, highly improving the gain and the gain-bandwidth product, improving the OTA energy-efficiency. An elevated figure-of-merit is achieved, i.e., a 1628 MHz×pF/mA, and a gain of 53 dB, under a voltage supply source of 2 V. The results are compared with state-of-the-art OTAs in this field of study and the potential is fully fulfilled with a state-of-the-art layout-aware optimization tool, AIDA, particularly important to overcome the device stacking problematic in lower supplies.",
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author = "Ricardo P{\'o}voa and Ant{\'o}nio Canelas and Martins, {Ricardo M. F.} and Nuno Horta and Nuno Louren{\cc}o and Jo{\~a}o Goes",
note = "This work was supported in part by Funda{\cc}{\~a}o para a Ci{\^e}ncia e Tecnologia under Grant SFRH/BD/103337/2014, Grant SFRH/BPD/104648/2014, Grant SFRH/BPD/120009/ 2016, and by Instituto de Telecomunica{\cc}{\~o}es under Research Project UID/EEA/50008/2019.",
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Póvoa, R, Canelas, A, Martins, RMF, Horta, N, Lourenço, N & Goes, J 2019, A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers. in SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings., 8795248, Institute of Electrical and Electronics Engineers Inc., pp. 161-164, 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2019, Lausanne, Switzerland, 15/07/19. https://doi.org/10.1109/SMACD.2019.8795248

A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers. / Póvoa, Ricardo; Canelas, António; Martins, Ricardo M. F.; Horta, Nuno; Lourenço, Nuno; Goes, João.

SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. p. 161-164 8795248.

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

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T1 - A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers

AU - Póvoa, Ricardo

AU - Canelas, António

AU - Martins, Ricardo M. F.

AU - Horta, Nuno

AU - Lourenço, Nuno

AU - Goes, João

N1 - This work was supported in part by Fundação para a Ciência e Tecnologia under Grant SFRH/BD/103337/2014, Grant SFRH/BPD/104648/2014, Grant SFRH/BPD/120009/ 2016, and by Instituto de Telecomunicações under Research Project UID/EEA/50008/2019.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - This paper presents an innovative topology for an operational transconductance amplifier (OTA) based on a CMOS inverter topology. This OTA is proper for biomedical and healthcare circuits and systems, due to a low level of noise and power consumption, together with elevated gain. This is a fully-differential implementation, with a double CMOS branch biased by two pairs of voltage-combiners, in both NMOS and PMOS configurations, highly improving the gain and the gain-bandwidth product, improving the OTA energy-efficiency. An elevated figure-of-merit is achieved, i.e., a 1628 MHz×pF/mA, and a gain of 53 dB, under a voltage supply source of 2 V. The results are compared with state-of-the-art OTAs in this field of study and the potential is fully fulfilled with a state-of-the-art layout-aware optimization tool, AIDA, particularly important to overcome the device stacking problematic in lower supplies.

AB - This paper presents an innovative topology for an operational transconductance amplifier (OTA) based on a CMOS inverter topology. This OTA is proper for biomedical and healthcare circuits and systems, due to a low level of noise and power consumption, together with elevated gain. This is a fully-differential implementation, with a double CMOS branch biased by two pairs of voltage-combiners, in both NMOS and PMOS configurations, highly improving the gain and the gain-bandwidth product, improving the OTA energy-efficiency. An elevated figure-of-merit is achieved, i.e., a 1628 MHz×pF/mA, and a gain of 53 dB, under a voltage supply source of 2 V. The results are compared with state-of-the-art OTAs in this field of study and the potential is fully fulfilled with a state-of-the-art layout-aware optimization tool, AIDA, particularly important to overcome the device stacking problematic in lower supplies.

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KW - Voltage-Combiners

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DO - 10.1109/SMACD.2019.8795248

M3 - Conference contribution

SP - 161

EP - 164

BT - SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Póvoa R, Canelas A, Martins RMF, Horta N, Lourenço N, Goes J. A Low Noise CMOS Inverter-Based OTA for and Healthcare Signal Receivers. In SMACD 2019 - 16th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2019. p. 161-164. 8795248 https://doi.org/10.1109/SMACD.2019.8795248