Abstract: This paper describes a prototype version of an Analog Design Assistance System (ADAS) to synthesize analog layout structures, both CMOS and BiCMOS technologies. We show a flexible cell generator system, which is integrated in a complete automatic layout system for analog circuits. The tool is based on the layout strategy "Telescopic Layout Cell" (TLC). The device abutment strategy is used to achieve maximum performance of analog circuits. It performs automatically and is controlled by both area and wiring minimization. Furthermore, ADAS is characterized by resulting compact layouts, flexible parameterization and integration into commercial design frameworks. An object-oriented strategy leads to a significant speed improvement. The implemented algorithms are described and results are illustrated by an example proving the effectiveness of this approach.
Keywords: Analog design assistance system, layout structure, CMOS, BiCMOS, analog circuit, placement, routing, circuit topologie, parametrization, Chua Chaos circuit.