Title :
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
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;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2005.852005
