A highly efficient composite class-AB–AB Miller op-amp with high gain and stable from 15 pF up to very large capacitive loads

Pourashraf, Shirin; Ramírez-Angulo, Jaime; López Martín, Antonio; González Carvajal, Ramón

Publication:
A highly efficient composite class-AB–AB Miller op-amp with high gain and stable from 15 pF up to very large capacitive loads

dc.contributor.author	Pourashraf, Shirin
dc.contributor.author	Ramírez-Angulo, Jaime
dc.contributor.author	López Martín, Antonio
dc.contributor.author	González Carvajal, Ramón
dc.contributor.department	Ingeniería Eléctrica, Electrónica y de Comunicación	es_ES
dc.contributor.department	Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren	eu
dc.date.accessioned	2022-02-04T18:06:51Z
dc.date.available	2022-02-04T18:06:51Z
dc.date.issued	2018
dc.description.abstract	In this paper, a highly power-efficient class-AB–AB Miller op-amp is discussed. The structure uses gm enhancement based on local common-mode feedback to provide class-AB operation with enhanced effective gm , open-loop gain, unity-gain frequency, and slew rate ( SR ) without significant increase in quiescent power consumption. Utilization of a nonlinear load leads to large symmetric positive and negative SRs . Stability over an extremely wide range of capacitive loads is achieved through a combination of Miller and phase-lead compensations. The unity-gain frequency does not show sensitivity to capacitive load values. A test chip prototype fabricated in 0.18- μm CMOS technology shows 90.8-dB open-loop gain, 12.5-MHz bandwidth for a 25-pF load capacitance, and a factor 60 SR enhancement with maximum output current close to 1-mA and 43- μA total static current.	en
dc.description.sponsorship	This work was supported by the Spanish National Research Agency under Grant TEC2016-80396-C2.	en
dc.format.extent	12 p.
dc.format.mimetype	application/pdf	en
dc.identifier.citation	S. Pourashraf, J. Ramirez-Angulo, A. J. Lopez-Martin and R. González-Carvajal, "A Highly Efficient Composite Class-AB–AB Miller Op-Amp With High Gain and Stable From 15 pF Up To Very Large Capacitive Loads," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 26, no. 10, pp. 2061-2072, Oct. 2018, doi: 10.1109/TVLSI.2018.2830365.	en
dc.identifier.doi	10.1109/TVLSI.2018.2830365
dc.identifier.issn	1557-9999 (Electronic)
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/42125
dc.language.iso	eng	en
dc.publisher	IEEE	en
dc.relation.ispartof	IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 26, no. 10, pp. 2061-2072	en
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/TEC2016-80396-C2	en
dc.relation.publisherversion	https://doi.org/10.1109/TVLSI.2018.2830365
dc.rights	© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.subject	CL-independent pole–zero cancelation	en
dc.subject	Class-AB op-amps	en
dc.subject	gm boosting	en
dc.subject	Nonlinear load	en
dc.subject	Phase-lead compensation	en
dc.title	A highly efficient composite class-AB–AB Miller op-amp with high gain and stable from 15 pF up to very large capacitive loads	en
dc.type	Artículo / Artikulua	es
dc.type	info:eu-repo/semantics/article	en
dc.type.version	Versión aceptada / Onetsi den bertsioa	es
dc.type.version	info:eu-repo/semantics/acceptedVersion	en
dspace.entity.type	Publication
relation.isAuthorOfPublication	d3dc0470-6429-43e7-80f2-15fae67f4204
relation.isAuthorOfPublication.latestForDiscovery	d3dc0470-6429-43e7-80f2-15fae67f4204