An Ultra-low Power Ternary Multi-digit Adder Applies GDI Method for Binary Operations
- سال انتشار: 1402
- محل انتشار: مجله نوآوری های مهندسی برق و کامپیوتر، دوره: 11، شماره: 1
- کد COI اختصاصی: JR_JECEI-11-1_017
- زبان مقاله: انگلیسی
- تعداد مشاهده: 351
نویسندگان
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran & Department of Computer Engineering, K.N. Toosi University of Technology, Tehran, Iran.
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
چکیده
kground and Objectives: This paper introduces a novel low-power and low-delay multi-digit ternary adder in carbon nanotube field effect transistor (CNTFET) technology. Methods: In the proposed design, reducing the power consumption is the main priority. In this multi valued logic design, geometry-dependent threshold voltage of the CNTFET is the design code. At each stage, a half adder is applied to generate the intermediate binary signals called half-sum (HS) and half-carry (HC). For the binary operations, the gate diffusion input (GDI) method is used to significantly reduce the power consumption as in the proposed decoder design. Results: In this work a GDI based sum generator and a low-power encoder are used to calculate the final sum value of each stage. Furthermore, the proposed carry generation/propagation block results in a significant reduction in the overall propagation delay time. The simulation reveals a significant improvement in terms of power consumption (up to ۲۷%), PDP (up to ۴۱%) and FO۴ delay (up to ۲۰%).Conclusion: A CNTFET based power and delay efficient multi-digit ternary adder has been presented in this paper. The simulation is performed by the Synopsis HSPICE simulator with Stanford ۳۲ nm CNTFET technology. According to the results, a significant saving in average power consumption is achieved where the power-delay product (PDP) is improved by ۴۱% compared to the best existing design.کلیدواژه ها
CNTFET, Low power Adder, Ternary logic, Multi-valued logic, GDIاطلاعات بیشتر در مورد COI
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