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

Keywords

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

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    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