Ring-oscillator with multiple transconductors for linear analog-to-digital conversion

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dc.contributor.author Alvero González, Leidy Mabel
dc.contributor.author Medina Huamán, Víctor Manuel
dc.contributor.author Krampus, Vahur
dc.contributor.author Patón Álvarez, Susana
dc.contributor.author Hernández Corporales, Luis
dc.contributor.author Gutiérrez Fernández, Eric
dc.date.accessioned 2022-03-10T11:11:15Z
dc.date.available 2022-03-10T11:11:15Z
dc.date.issued 2021-06-02
dc.identifier.bibliographicCitation Alvero-Gonzalez, L. M., Medina, V., Kampus, V., Paton, S., Hernandez, L., & Gutierrez, E. (2021). Ring-Oscillator with Multiple Transconductors for Linear Analog-to-Digital Conversion. Electronics, 10(12), 1408.
dc.identifier.issn 2079-9292
dc.identifier.uri http://hdl.handle.net/10016/34326
dc.description.abstract This paper proposes a new circuit-based approach to mitigate nonlinearity in open-loop ring-oscillator-based analog-to-digital converters (ADCs). The approach consists of driving a current-controlled oscillator (CCO) with several transconductors connected in parallel with different bias conditions. The current injected into the oscillator can then be properly sized to linearize the oscillator, performing the inverse current-to-frequency function. To evaluate the approach, a circuit example has been designed in a 65-nm CMOS process, leading to a more than 3-ENOB enhancement in simulation for a high-swing differential input voltage signal of 800-mVpp, with considerable less complex design and lower power and expected area in comparison to state-of-the-art circuit based solutions. The architecture has also been checked against PVT and mismatch variations, proving to be highly robust, requiring only very simple calibration techniques. The solution is especially suitable for high-bandwidth (tens of MHz) medium-resolution applications (10–12 ENOBs), such as 5G or Internet-of-Things (IoT) devices.
dc.description.sponsorship This research was funded by Project TEC2017-82653-R, Spain.
dc.format.extent 15
dc.language.iso eng
dc.publisher MDPI
dc.rights © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
dc.rights Atribución 3.0 España
dc.rights This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license
dc.rights.uri http://creativecommons.org/licenses/by/3.0/es/
dc.subject.other 5g
dc.subject.other Data conversion
dc.subject.other Frequency modulation
dc.subject.other Iot
dc.subject.other Linearization techniques
dc.subject.other Voltage-controlled oscillator
dc.title Ring-oscillator with multiple transconductors for linear analog-to-digital conversion
dc.type article
dc.subject.eciencia Electrónica
dc.identifier.doi https://doi.org/10.3390/electronics10121408
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2017-82653-R
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 12
dc.identifier.publicationlastpage 15
dc.identifier.publicationtitle Electronics (Switzerland)
dc.identifier.publicationvolume 10
dc.identifier.uxxi AR/0000028827
dc.contributor.funder Ministerio de Economía, Industria y Competitividad (España)
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