Automatic Layout Generation of Bipolar Arrays
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-14
Introduction: A present way of making the physical design or layout of a given circuit consists in using standard interactive design systems. First, the electrical components or devices are designed and stored in a device library. Then these components are placed and the wiring is done by drawing the interconnecting shapes of metal. When doing so, location and orientation of the devices can be interactively modified. There are three significant drawbacks inherent to this approach: The first that similar devices differing only by the size of a given element (say, for instance, the emitter size of a transistor) have to be individually designed. The second that any change in the technology rules leads to a complete redesign of the device library.