Re-Assessment of Steep-Slope Device Design From a Circuit-Level Perspective Using Novel Evaluation Criteria and Model-Less Method
| Autor: | Qianqian Huang, Yangyuan Wang, Le Ye, Zhixuan Wang, Ru Huang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Optimal design
Computer science Circuit design 020208 electrical & electronic engineering 02 engineering and technology Type (model theory) Subthreshold slope Logic gate Low-power electronics 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering AND gate Hardware_LOGICDESIGN Electronic circuit |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 68:1624-1635 |
| ISSN: | 1558-0806 1549-8328 |
| Popis: | Power is becoming a major bottleneck in energy constraint applications such as internet-of-things (IoT). Emerging steep-slope devices such as tunnel FETs (TFET) and negative capacitance (NC) FETs are promising candidates for such type of applications. Nevertheless, due to the time-consuming characterization process and inconsistent evaluation criteria, conventional co-design and co-optimization process between novel devices and logic circuits takes too much time and its results rarely meet expectation. As a result, conventional co-design and co-optimization are quite inefficient. In this paper, for the first time, a new criterion is utilized to evaluate novel steep-slope devices for ultra-low power applications. In addition, an efficient evaluation method is proposed, which not only quantitatively guides device design, but also evaluates devices from a circuit perspective without the need for device compact model and circuit simulation. From a device design perspective, optimal design metrics of novel steep slope devices such as average subthreshold slope ( $SS_{avg}$ ), off current ( ${I} _{OFF}$ ), and on current ( ${I} _{ON}$ ) can be directly figured out with the help of the proposed evaluation criteria and method. From a circuit design perspective, the proposed evaluation criteria and method can be used to determine application scope. |
| Databáze: | OpenAIRE |
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