ALE: a layout generating and editing system for analog LSIs

Author

Itoh, Makiko ; Mori, Hajimu

Author_Institution

NEC Corp., Kawasaki, Japan

fYear

1990

fDate

1-3 May 1990

Firstpage

843

Abstract

An analog LSI layout design system called ALE (analog layout editor) is described. It is applicable to block layouts for bipolar analog LSIs. ALE has two functions: a layout generator and a layout editor. With the layout generator, layouts are generated from circuit diagrams, automatically preserving the relative positions of device cells and wires. Therefore, when circuit constraints are expressed in the circuit diagram, the generated layout satisfies these conditions. The layout editor, which can be used for either circuit diagrams or layouts, provides interactive tools, making it easier to take into account constraints particular to analog circuits. This system reduces layout design time by up to 50% without any degradation of characteristics such as layout area and circuit performance

Keywords

analogue circuits; bipolar integrated circuits; circuit layout CAD; large scale integration; ALE; analog LSIs; analog layout editor; bipolar IC; block layouts; circuit constraints; circuit diagram; circuit diagrams; degradation; design time; device cells; editing system; interactive tools; layout design system; layout generator; Analog circuits; Capacitance; Character generation; Circuit optimization; Degradation; Fabrication; Large scale integration; Libraries; National electric code; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.112216

Filename

112216