| Summary: | 碩士 === 國立中央大學 === 電機工程研究所 === 99 === In order to shorten the design cycles of analog circuits, analog design automation has become a popular research topic in recent years. Typically, analog design automation approaches can be classified into three categories: knowledge-based, simulation-based and equation-based approaches. But each approach has its own disadvantages in terms of accuracy and efficiency. In this thesis, we propose a new equation-based analog synthesis process and demonstrate on a two-stage operational amplifier(op-amps). Based on gm/ID design concept, this process can improve the accuracy of traditional GP-based approach thus reducing the design iterations. The proposed automation process has been implemented with C++ and LINGO, which is a nonlinear programming solver. As demonstrated in the experiments, the proposed approach can achieve the required specifications with the shortest computation time compared to previous SA-based and GP-based approaches.
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