四值绝热动态D触发器开关级设计

Design of quaternary adiabatic dynamic D flip-flop on switch-level

研究绝热电路和多值触发器,提出一种四值绝热动态D触发器设计方案.该方案采用多阈值金属氧化物半导体MOS管控制技术和开关信号理论,推导四值绝热动态D触发器文字运算电路结构式,由文字运算电路控制四值绝热逻辑信号产生,实现动态D触发器的四值输出,并在此基础上设计具有记忆功能的触发型四值绝热正循环门.通过PSpice模拟软件验证该设计电路逻辑功能正确,在55.6 MHz工作频率下,与常规CMOS四值动态D触发器相比,节省功耗约90%.

A design scheme of quaternary adiabatic dynamic D flip-flop was proposed.The analysis of adiabatic circuits and multiple-value flip-flops was presented.The multi-threshold metal oxide semiconductor（MOS） control technology and the switch-signal theory were used in this proposed scheme.Firstly a literal operation circuit structure of the quaternary adiabatic dynamic D flip-flop was derived.Then the generated logic signal was used to implement the quaternary output of the dynamic D flip-flop and to design a quaternary adiabatic loop operation circuit with memory function.The Pspice simulation results have verified that the designed circuits have correct logic functions.The proposed circuits can save about 90% energy at 55.6 MHz frequency compared to conventional complementary metal oxide semiconductor（CMOS） quaternary dynamic D flip-flop.