Mixed-Signal IP Design Challenges in 28-nm Process and Beyond
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As process technologies continue to scale aggressively, it is becoming more challenging when developing high-quality, high-speed mixed-signal IP. Specifically, the 28-nm process poses some unique challenges not found in 65-nm and 40-nm technology processes. This paper discusses the low power requirements found in 28-nm processes and addresses issues associated with the aggressive scaling of the core supply voltages in these technology processes. It also focuses on restricted design rules and how they have created a paradigm shift in the way circuits are designed and laid out in 28-nm processes as well as describes techniques to maximize design and layout reuse.