The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Propomos aqui um algoritmo de projeto de amplificadores operacionais totalmente orientado ao Spice para atingir os ganhos máximos sob baixos consumos de energia e taxas de variação atribuídas. Nosso algoritmo de otimização é baseado em um conhecido método de descida mais íngreme combinado com programação não linear. O algoritmo é realizado por circuitos RC equivalentes com ABMs (modelos de comportamento analógico) do Spice. A direção do gradiente é decidida pela análise dos circuitos de sensibilidade. Os parâmetros ótimos podem ser encontrados no ponto de equilíbrio na resposta transitória do circuito RC. Embora o tempo de otimização seja muito mais rápido do que outras ferramentas de projeto, os resultados podem ser difíceis devido aos modelos simples de transistores. Se forem necessários valores de parâmetros muito melhores, eles podem ser melhorados com o simulador Spice e/ou outras ferramentas.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copiar
Masayoshi ODA, Yoshihiro YAMAGAMI, Junji KAWATA, Yoshifumi NISHIO, Akio USHIDA, "Sensitivity Analysis and Optimization Algorithm --- Based on Nonlinear Programming ---" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 9, pp. 2426-2434, September 2008, doi: 10.1093/ietfec/e91-a.9.2426.
Abstract: We propose here a fully Spice-oriented design algorithm of op-amps for attaining the maximum gains under low power consumptions and assigned slew-rates. Our optimization algorithm is based on a well-known steepest descent method combining with nonlinear programming. The algorithm is realized by equivalent RC circuits with ABMs (analog behavior models) of Spice. The gradient direction is decided by the analysis of sensitivity circuits. The optimum parameters can be found at the equilibrium point in the transient response of the RC circuit. Although the optimization time is much faster than the other design tools, the results might be rough because of the simple transistor models. If much better parameter values are required, they can be improved with Spice simulator and/or other tools.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.9.2426/_p
Copiar
@ARTICLE{e91-a_9_2426,
author={Masayoshi ODA, Yoshihiro YAMAGAMI, Junji KAWATA, Yoshifumi NISHIO, Akio USHIDA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Sensitivity Analysis and Optimization Algorithm --- Based on Nonlinear Programming ---},
year={2008},
volume={E91-A},
number={9},
pages={2426-2434},
abstract={We propose here a fully Spice-oriented design algorithm of op-amps for attaining the maximum gains under low power consumptions and assigned slew-rates. Our optimization algorithm is based on a well-known steepest descent method combining with nonlinear programming. The algorithm is realized by equivalent RC circuits with ABMs (analog behavior models) of Spice. The gradient direction is decided by the analysis of sensitivity circuits. The optimum parameters can be found at the equilibrium point in the transient response of the RC circuit. Although the optimization time is much faster than the other design tools, the results might be rough because of the simple transistor models. If much better parameter values are required, they can be improved with Spice simulator and/or other tools.},
keywords={},
doi={10.1093/ietfec/e91-a.9.2426},
ISSN={1745-1337},
month={September},}
Copiar
TY - JOUR
TI - Sensitivity Analysis and Optimization Algorithm --- Based on Nonlinear Programming ---
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2426
EP - 2434
AU - Masayoshi ODA
AU - Yoshihiro YAMAGAMI
AU - Junji KAWATA
AU - Yoshifumi NISHIO
AU - Akio USHIDA
PY - 2008
DO - 10.1093/ietfec/e91-a.9.2426
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2008
AB - We propose here a fully Spice-oriented design algorithm of op-amps for attaining the maximum gains under low power consumptions and assigned slew-rates. Our optimization algorithm is based on a well-known steepest descent method combining with nonlinear programming. The algorithm is realized by equivalent RC circuits with ABMs (analog behavior models) of Spice. The gradient direction is decided by the analysis of sensitivity circuits. The optimum parameters can be found at the equilibrium point in the transient response of the RC circuit. Although the optimization time is much faster than the other design tools, the results might be rough because of the simple transistor models. If much better parameter values are required, they can be improved with Spice simulator and/or other tools.
ER -