Um framework para o dimensionamento automático de blocos analógicos básicos integrados

Abstract

The main goal of this work is the development of a framework for automatic design of basic analog integrated circuits in CMOS technology. For the design automations are used the optimizations heuristics Genetic Algorithms (GA) and Simulated Annealing which explore the design space for searching optimizated solutions that satisfy the design constraints. In this optimization the solution evaluations are performed with SPICE electrical simulations. As design methodology, the proposal tool has the Direct Methodology where the heuristic works directly with the transistors sizes, and the gm/ID Methodology which uses a curve that depend only by fabrication technology for the transistors sizing. This tool was implemented in Matlab® and has a friendly graphical interface (GUI) with the human designer. The proposed framework may be used as a tool for the researcher where several comparisons can be made in the Analog Integrated Design Automation. As result we present the design automation of a Differential Amplifier and a Transconduc-tance Amplifier Miller, where some comparisons and analysis are made.