Analog‐ESD Signal Pin Co‐synthesis

Summary

This chapter addresses analog and ESD signal pin cosynthesis that introduces usage of interdigitated layout and common centroid concepts to provide ideal matching, low capacitance, and small area in differential signal pins. Using interdigitated designs, the parasitic elements are utilized for signal pin‐to‐signal pin ESD protection. In conclusion, the issue of common centroid design of ESD protection networks which integrates signal pin‐to‐signal pin ESD protection with the interdigitation pattern for ESD pin‐to‐rail protection network for differential pair circuitry is discussed for the first time. With integration of the ESD pin‐to‐rail solution and the ESD signal pin solution, a significant reduction of the area and loading effect for CMOS differential circuits is established. This novel concept will provide significant advantage for present and future high‐performance analog and RF design for matching, area reduction, and performance advantages.