Title :
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
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;
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
DOI :
10.1109/ISCAS.2006.1693815
