Repository logo
 
Publication

A new family of CMOS inverter based OTAs for Biomedical and Healthcare Applications

2020-03Journal article Restricted access
Simple item page
dc.contributor.authorPóvoa, Ricardo
dc.contributor.authorCanelas, António
dc.contributor.authorMartins, Ricardo
dc.contributor.authorLourenço, Nuno
dc.contributor.authorHorta, Nuno
dc.contributor.authorGoes, João
dc.date.accessioned2025-05-08T13:27:55Z
dc.date.available2025-05-08T13:27:55Z
dc.date.issued2020-03
dc.description.abstractThis paper presents a new family of innovative operational transconductance amplifier (OTA) topologies based on CMOS inverter structures, with improved gain and energy-efficiency. This new family of OTA designs is suitable for biomedical and healthcare circuits and systems, due to the high energy-efficiency, improved gain and low level of noise contribution, when compared to the state-of-the-art in this field. In this paper, two fully-differential implementations are presented, a first one with a double CMOS branch biased by two pairs of voltage-combiners structures in both NMOS and PMOS configurations, and a second one with folded voltage-combiners specifically targeting low voltage applications, e.g., supplies below 1 V. The usage of voltage-combiners to bias the OTAs improves the gain and the gain-bandwidth product, therefore improving the energy-efficiency figure-of-merit. High values of figure-of-merit are achieved in both implementations, i.e., more than 1600 MHz × pF/mA and 2000 MHz × pF/mA, gain values above 53 dB and 50 dB under supply sources of 2 V and 0.7 V respectively. The folded voltage-combiners biased OTA is able to operate correctly under a voltage supply down to 0.7 V with proper DC biasing. The results are finally compared with state-of-the-art in this field and the potential of the circuits is fulfilled using a state-of-the-art layout-aware integrated-circuit optimization framework, AIDA, particularly relevant in order to overcome the device stacking problematic for lower voltages.eng
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPóvoa, R., Canelas, A., Martins, R., Horta, N., Lourenço, N., & Goes, J. (2020). A new family of CMOS inverter-based OTAs for biomedical and healthcare applications. Integration, 71, 38-48
dc.identifier.doi10.1016/j.vlsi.2019.12.004
dc.identifier.issn0167-9260
dc.identifier.urihttp://hdl.handle.net/10400.26/57785
dc.language.isoengpt_PT
dc.peerreviewedyes
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCMOS
dc.subjectInverter-based
dc.subjectLow-power
dc.subjectLow-voltage
dc.subjectEnergy-efficiency
dc.subjectOTA
dc.subjectAmplifiers
dc.subjectTelescopic
dc.subjectFolded
dc.subjectVoltage-combiners
dc.subjectBiomedical
dc.subjectHealthcare
dc.titleA new family of CMOS inverter based OTAs for Biomedical and Healthcare Applicationseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage48pt_PT
oaire.citation.startPage38pt_PT
oaire.citation.titleIntegration
oaire.citation.volume71pt_PT
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
A new family of CMOS inverter based OTAs for Biomedical and Healthcare Applications.pdf
Size:
8.08 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.85 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ENIDH – EEM - Artigo Científico