![]() If the simulation provides a good match between specifications and results, then the layout is developed. Once the thinking model is developed, the simulation validation follows to test if the design has a good possibility of delivering a successful prototype. This design process has iterations to meet specifications that exceed in number of the available degrees of freedom to maneuver the design. After the conceptual idea, developing a thinking model to understand the operation of the device requires a good “ballpark” evaluation of transistor sizes, decision making, and assumptions to fulfill the specifications. The evolution of CMOS devices to short channel designs where the feature size is below 1000 nm brings a great deal of uncertainty in the way the microelectronics design cycle is completed. ![]() CMOS microelectronics design has evolved tremendously during the last two decades.
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