This paper presents a technique to improve the performance of wide dynamic circuits by efficiently using the conditional keeper. PMOS transistor which is used to charge the dynamic node in the precharge phase is also used as a conditional keeper in the evaluation phase. The keeper functionality is merged in precharge PMOS. It is found that at same DC noise robustness; this technique gives 9% improvement in delay, 14% improvement in power and 18% improvement in clock load compared to conditional keeper technique. Further, this technique gives zero delay penalties but higher noise immunity compared to conventional dynamic circuits.

Date of this Version

February 2006