Design and Comparison of Very Low-Voltage CMOS Output Stages

Author

Aloisi, Walter ; Giustolisi, Gianluca ; Palumbo, Gaetano

Author_Institution

Dipt. di Ingegneria Elettrica, Elettronica e dei Sistemi, Univ. Degli Studi di Catania, Italy

Volume

52

Issue

8

fYear

2005

Firstpage

1545

Lastpage

1556

Abstract

This paper analyzes and compares CMOS output stages for very low-voltage operational amplifiers. The analysis was carried out by taking into account output stage performance parameters which also affect the characteristics of the overall amplifier. In particular, three quality factors were defined to afford the designer a better understanding of the relationships between current dissipation, area consumption, bandwidth, and linearity. Exploiting these new parameters, four output stages were analyzed in detail and compared. Finally, comparison results were validated by simulations.

Keywords

CMOS analogue integrated circuits; integrated circuit design; low-power electronics; network analysis; operational amplifiers; CMOS analogue integrated circuits; integrated circuit design; low-power electronics; low-voltage CMOS output stages; low-voltage operational amplifiers; network analysis; output stage performance parameters; quality factors; Analog integrated circuits; Bandwidth; CMOS analog integrated circuits; CMOS integrated circuits; Circuit simulation; Linearity; Operational amplifiers; Performance analysis; Q factor; Topology; Analog integrated circuits; CMOS analog circuits; low-voltage; operational amplifiers; output stages;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2005.852005

Filename

1495721