An optimized methodology to design CMOS operational amplifier

Author

Loulou, M. ; Ali, S. Ait ; Fakhfakh, M. ; Masmoudi, N.

Author_Institution

Lab. d´´Electron. et des Technol. de l´´Inf., Nat. Eng. Sch. of Sfax, Tunisia

fYear

2002

fDate

11-13 Dec. 2002

Firstpage

14

Lastpage

17

Abstract

In this paper we present a method to optimize the design of CMOS operational amplifier. The purpose of this work is to give an optimal transistor sizing methodology in order to reach the op-amp desired characteristics. This is achieved by mean of simple calculations and accessible mathematic software. The idea consists of a mathematical formulation based on level 1 SPICE MOS model. Then, an objective function is defined according to the performances required. By mean of Maple software, we determine the optimal op-amp parameters. The proposed method is presented and applied to the design of standard CMOS op-amp using CMOS 0.35μm process. Simulations using PSPICE are presented and compared to theoretical calculations show the efficiency of our method.

Keywords

CMOS integrated circuits; operational amplifiers; optimisation; 0.35 micron; CMOS operational amplifier; Maple software; circuit design methodology; level 1 SPICE MOS model; optimal transistor sizing methodology; CMOS process; Circuit topology; Design methodology; Design optimization; Energy consumption; Frequency; Operational amplifiers; Performance gain; Predictive models; SPICE;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics, The 14th International Conference on 2002 - ICM

Print_ISBN

0-7803-7573-4

Type

conf

DOI

10.1109/ICM-02.2002.1161486

Filename

1161486