Three stage amplifier frequency compensation

Author

Ramos, João ; Peng, Xiaohong ; Steyaert, Michiel ; Sansen, Willy

Author_Institution

Dept. Elektrotechniek, Katholieke Universiteit Leuven, Heverlee, Belgium

fYear

2003

fDate

16-18 Sept. 2003

Firstpage

365

Lastpage

368

Abstract

This paper analyzes four recent different frequency compensation schemes for three stage amplifier. Under equal conditions it is possible to study the unity gain frequency (UGF) for each scheme without external interferences, such as technology variations or different design criteria and optimization emphasis. Recently published amplifiers and their specifications are later commented on in light of this new study. Unexpectedly, measurements from an amplifier designed in a 0.35 /spl mu/m CMOS technology, published results and theory appear to show contradictory results.

Keywords

CMOS integrated circuits; amplifiers; circuit optimisation; compensation; 0.35 microns; CMOS technology; UGF; amplifier design; amplifiers specifications; design criteria; frequency compensation schemes; optimization emphasis; technology variations; three stage amplifier; unity gain frequency; CMOS technology; Capacitors; Design optimization; Energy consumption; Feedback; Frequency; Interference; Performance analysis; Topology; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European

Conference_Location

Estoril, Portugal

Print_ISBN

0-7803-7995-0

Type

conf

DOI

10.1109/ESSCIRC.2003.1257148

Filename

1257148