In the era of low-power very large-scale integration design, approximate computing is a soaring design paradigm that assures energy-efficient circuit design at the cost of some accuracy. Multiplication is a very important operation of an arithmetic unit and compressor is the inherent part of the multiplier. In this paper, an energy-efficient design of a 4:2 approximate compressor is proposed. The inclusion of the extra leakage control transistors in the logic has led to leakage power reduction, which ultimately reduces the power dissipation in the circuits. The proposed 4:2 compressor is simulated at 10$$nm fin-field effect transistor (FinFET) technology. The proposed compressor has been verified for its functionality and robustness. The proposed design shows a power dissipation of 154.48$$nW and a delay of 9.16$$ps. In comparison to other 4:2 approximate compressors, the proposed compressor shows the least power dissipation, the lowest power delay product (PDP) and the highest robustness. The power dissipation of the proposed compressor is 92.84% less than that of the base compressor. The PDP of the designed compressor is 80.58% less than the minimum PDP among other compressors. The aging analysis for the negative bias temperature instability (NBTI) effect is also checked for the proposed compressor and compared with the existing designs.

在低功耗超大规模集成设计时代，近似计算是一种飞速发展的设计范式，它以牺牲一定的精度为代价来保证高能效的电路设计。乘法是算术单元中非常重要的运算，压缩器是乘法器的固有部分。本文提出了一种4:2近似压缩机的节能设计。在逻辑中加入额外的漏电控制晶体管可以减少漏电功率，从而最终降低电路中的功耗。建议的 4:2 压缩器在 10 处进行模拟$$纳米鳍式场效应晶体管 (FinFET) 技术。所提出的压缩机的功能和稳健性已得到验证。所提出的设计显示功耗为 154.48$$nW 且延迟 9.16$$附：与其他 4:2 近似压缩器相比，所提出的压缩器显示出最低的功耗、最低的功率延迟乘积 (PDP) 和最高的鲁棒性。所提出的压缩机的功耗比基础压缩机低 92.84%。设计的压缩机的PDP比其他压缩机中的最小PDP低80.58%。还针对所提出的压缩机检查了负偏压温度不稳定性 (NBTI) 效应的老化分析，并与现有设计进行了比较。