Discrete Circuit Optimization: Library Based Gate Sizing and Threshold Voltage Assignment

Discrete gate sizing and threshold assignment are commonly used tools for optimizing digital circuits, and ideal methods for incremental optimization. The gate widths and threshold voltages, along with the gate lengths, can be adjusted to optimize power and delay. This monograph surveys this field, providing the background needed to perform research in the field. Concepts such as standard cell libraries, static timing analysis, and analytical delay and power models are explained, along with examples and data to help understand the tradeoffs involved. Comparative results are also provided to show the current state of the field.