ISECAD: an iterative simulation-equation-based opamp-design CAD tool

Author

Toosi, Tahereh Kahookar ; Tabasy, Ehsan Zhian ; Sarbishaei, Hassan ; Lotfi, Reza

Author_Institution

Dept. of Electr. Eng., Ferdowsi Univ., Mashhad

fYear

2006

fDate

21-24 May 2006

Abstract

A simulation-equation-based methodology for designing high-performance opamps is presented. Using an iterative interface between equation analyzer and circuit simulator, ISECAD an automatic computer-aided-design (CAD) is developed to design high-performance two-stage cascode-compensated opamp in deep-sub-micron technologies. The sizes of all devices are optimally determined in the circuit with specific structure. A sample opamp is designed employing this CAD for 1.8-V supply voltage in 0.18-mum CMOS technology. Simulations show that the opamp achieves 79dB DC gain, 323MHz unity-gain frequency and 50deg phase margin

Keywords

CMOS integrated circuits; circuit CAD; circuit simulation; operational amplifiers; 0.18 micron; 1.8 V; 323 MHz; CAD tool; CMOS technology; ISECAD; automatic computer-aided-design; cascode-compensated opamp; circuit simulator; deep-sub-micron technologies; equation analyzer; iterative simulation equation; operational amplifiers; phase margin; Analytical models; CMOS technology; Circuit analysis; Circuit analysis computing; Circuit simulation; Computational modeling; Computer simulation; Design automation; Design methodology; Equations;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693815

Filename

1693815