摘要
以开关信号理论为指导 ,对电流型 CMOS电路中如何实现阈值控制进行了研究 .建立了实现阈值控制电路的电流传输开关运算 .在此基础上 ,设计了具有阈值控制功能的电流型 CMOS四值比较器、全加器及锁存器等电路 .通过对开关单元实施阈值控制后 ,所设计的电路在结构上得到了非常明显的简化 ,在性能上也获得了优化 .PSPICE模拟验证了所提出的电路具有正确的逻辑功能并且较之以往设计具有更好的瞬态特性和更低的功耗 .
Guided by the switch signal-theory,how to realiz e the threshold controlling in current-mode CMOS circuits is studied.The operatio ns of current transmission switch used to realize threshold-controlling circuit s are established.On this basis,several current-mode CMOS circuits with thresho ld-controllable function are designed.These circuits include quaternary current comparator,quaternary full adder and quaternary latch.By employing the threshol d-controlling technique,not only is the construction of the circuits simplified considerably but also the performance of the circuits is improved.The computer simulations with PSPICE demonstrate that the proposed circuits have correct logi c function.Furthermore,they have a better transient characteristics and lower po wer dissipation than those of the previously reported ones.
基金
国家自然科学基金资助项目 ( No.699730 39)~~
