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Design of Low Power ECRL Based Power Gated 4:2 Compressor

Advent of new age technologies like augmented reality (AR) has made techniques like digital signal processing (DSP), image and speech processing one of the most frequently used and important techniques. Multipliers are the fundamental components of these techniques which depend on extensive multiplications and numerical manipulations. Compressors are a crucial and important unit of multipliers that largely influence the speed and power dissipation of multipliers. This paper proposes a low power ECRL based 4:2 compressors by employing power gating. Two different power gating methodologies have been evaluated and compared, at varying load capacitances, supply voltage and frequency of the power clock signal, using 32nm PTM CMOS technology parameters. The small overhead observed in active state power dissipations is well compensated for by the significant power savings in idle states.