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Automatic Design of Operational Amplifier Utilizing both EquationBased Method and Genetic Algorithm
Kento SUZUKI Nobukazu TAKAI Yoshiki SUGAWARA Masato KATO
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E100A
No.12
pp.27502757 Publication Date: 2017/12/01
Online ISSN: 17451337
DOI: 10.1587/transfun.E100.A.2750
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms) Category: Keyword: automatic design, circuit block, equationbased, Genetic Algorithm, operational amplifier,
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Summary:
Automatic design of analog circuits using a programmed algorithm is in great demand because optimal analog circuit design in a short time is required due to the limited development time. Although an automatic design using equationbased method can design simple circuits fast and accurately, it cannot solve complex circuits. On the other hand, an automatic design using optimization algorithm such as Ant Colony Optimization, Genetic Algorithm, and so on, can design complex circuits. However, because these algorithms are based on the stochastic optimization technique and determine the circuit parameters at random, a lot of circuits which do not operate in principle are generated and simulated to find the circuit which meets specifications. In this paper, to reduce the search space and the redundant simulations, automatic design using both equationbased method and a genetic algorithm is proposed. The proposed method optimizes the bias circuit blocks using the equationbased method and signal processing blocks using Genetic Algorithm. Simulation results indicate that the evaluation value which considers the tradeoff of the circuit specification is larger than the conventional method and the proposed method can design 1.4 times more circuits which satisfy the minimum requirements than the conventional method.

