A Predictive Process Design Kit for Three-Independent-Gate Field-Effect Transistors

The Three-Independent-Gate Field-Effect Transistor (TIGFET) is a promising beyond-CMOS technology which offers many unique properties, such as (i) dynamic control of the device polarity, (ii) dual threshold operation and (iii) more expressive logic capabilities. The efficient exploitation of these properties provides opportunity to design area and power optimized logic circuits. However, the evaluation of TIGFET-based design currently relies on a close approximation for the Power, Performance, and Area (PPA) rather than traditional layout-based methods. There is a need for a publicly available Process Design Kit (PDK) enabling systematic evaluation of the design area. In this paper, we propose Predictive PDK for the 10 nm-diameter silicon-nanowire TIGFET device. This work consists of a SPICE model and full custom physical design files including a Design Rule Manual, a Design Rule Check, and a Layout Versus Schematic decks for Calibre®. We then validate the design rules through the implementation of basic logic gates and a full-adder and compare extracted metrics with FreePDK15nm™ PDK. We show 26% and 41% area reduction in the case of an XOR gate and a 1-bit full-adder design respectively.