Low power high speed FIR filter design using Null Convention Logic

An asynchronous delay insensitive Null Convention Logic (NCL) with dual rail signal has been used to design an improved low power high speed FIR filter and presented in this paper. NCL reduces the dynamic power consumption by reducing the switching activity. The power delay product of FIR filter using both conventional and NCL CMOS model has been estimated and compared in 90 nm technology with a frequency of 250MHz at 1.2V. Power reduction of 22% is achieved for the supply voltage of 2.5V in NCL CMOs model compared to conventional CMOS model.