Low-voltage class AB operational amplifier

Author

Vincence, Vohey C. ; Galup-Montoro, Carlos ; Schneider, Marcio C.

Author_Institution

Lab. de Circuitos Integrados, Univ. Fed. de Santa Catarina, Florianopolis, Brazil

fYear

2001

fDate

2001

Firstpage

207

Lastpage

211

Abstract

Presents a CMOS low-voltage operational amplifier, which uses a minimum selector circuit to control the class AB operation of the output stage. The operational amplifier basic characteristics are analyzed and simulated using the SMASH 4.0 simulator with the ACM model of the MOSFET. The supply voltage is 1.5V and the total quiescent current is 4.51 μA for a unity-gain frequency of 1 MHz. This design is being integrated on the AMS 0.8 μm CMOS technology. The operational amplifier presented here offers a competitive design choice for low-power low-voltage circuits

Keywords

CMOS analogue integrated circuits; circuit simulation; integrated circuit modelling; low-power electronics; operational amplifiers; 0.8 micron; 1 MHz; 1.5 V; 4.51 muA; ACM MOSFET model; CMOS; SMASH 4.0 simulator; class AB operational amplifier; low-voltage circuits; minimum selector circuit; output stage; supply voltage; total quiescent current; unity-gain frequency; Analog circuits; Analytical models; CMOS technology; Circuit analysis; Circuit simulation; MOSFETs; Nonlinear distortion; Operational amplifiers; Semiconductor device modeling; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits and Systems Design, 2001, 14th Symposium on.

Conference_Location

Pirenopolis

Print_ISBN

0-7695-1333-6

Type

conf

DOI

10.1109/SBCCI.2001.953028

Filename

953028