Design of Low Power 7T SRAM Cell for portable Biomedical Applications

In various medical applications, electronic devices are remaining as an integral part, where one of these applications is body area networks (BAN), which have networked sensors to monitor different physiological parts of human body. These BAN`s require efficient power capability with SRAM to handle data. In this paper, an 18nm FinFET based 7T SRAM cell is proposed to address the challenges on power and stability. In order to reduce the power leakage, the FinFET based 7T SRAM cell is designed by using self-controllable voltage level techniques that reduce leakage power to 92% in comparison to other SRAM. The process corner analysis is done using Cadence Virtuoso using 18nm FinFET technology, at lower temperature data retention voltage is lowest at the fs process corner and highest at FF Corner, and at the highest temperature, the value of data retention voltage is high at FF Corner.