A class-AB OTA (operational transconductance amplifier) topology with rail-to-rail input common-mode range is proposed for application in very low-voltage applications. High efficiency is achieved by reusing transistors both for class-AB operation and for mirroring the output currents, and a threshold lowering technique is applied to allow supply voltages less than two threshold voltages. Simulations in 40 nm CMOS technology show 41 dB gain at ±0.3 V supply voltage, a unity-gain frequency of 8.8 MHz on a 5 pF load, class-AB behaviour and full rail-to-rail operation when closed in unity-gain buffer configuration.

A 0.6 V class-AB rail-to-rail CMOS OTA exploiting threshold lowering / Centurelli, F.; Monsurrò, P.; Parisi, G.; Tommasino, P.; Trifiletti, A.. - In: ELECTRONICS LETTERS. - ISSN 0013-5194. - 54:15(2018), pp. 930-932. [10.1049/el.2018.5175]

A 0.6 V class-AB rail-to-rail CMOS OTA exploiting threshold lowering

Centurelli, F.
;
Monsurrò, P.;Parisi, G.;Tommasino, P.;Trifiletti, A.
2018

Abstract

A class-AB OTA (operational transconductance amplifier) topology with rail-to-rail input common-mode range is proposed for application in very low-voltage applications. High efficiency is achieved by reusing transistors both for class-AB operation and for mirroring the output currents, and a threshold lowering technique is applied to allow supply voltages less than two threshold voltages. Simulations in 40 nm CMOS technology show 41 dB gain at ±0.3 V supply voltage, a unity-gain frequency of 8.8 MHz on a 5 pF load, class-AB behaviour and full rail-to-rail operation when closed in unity-gain buffer configuration.
2018
class AB; OTA; low voltage design; threshold lowering
01 Pubblicazione su rivista::01a Articolo in rivista
A 0.6 V class-AB rail-to-rail CMOS OTA exploiting threshold lowering / Centurelli, F.; Monsurrò, P.; Parisi, G.; Tommasino, P.; Trifiletti, A.. - In: ELECTRONICS LETTERS. - ISSN 0013-5194. - 54:15(2018), pp. 930-932. [10.1049/el.2018.5175]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1278576
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