A 128Kb RAM design with capacitor-based offset compensation and double-diode based read assist circuits at low vDD

Publications

A 128Kb RAM design with capacitor-based offset compensation and double-diode based read assist circuits at low vDD

Author : Dr Vaddi Ramesh

Year : 2020

Publisher : National Institute of Science Communication and Information Resources

Source Title : Journal of Scientific and Industrial Research

Document Type :

Abstract

Low power static random access memory (SRAM) takes significant portion of area on chip in all modern SOCs and emerging Computing-in-memory applications for edge devices in IoT. This work proposes novel readability assist with the double-diode based word line under drive (WLUD) has been effective improving the read-static noise-margin (RSNM) by 26-46%and proposed a capacitor based current controlled sense amplifier offset compensation scheme. This scheme achieves 4X reduction in standard deviation of offset voltage over conventional sense amplifier design with 1.1% and 2.9% of area, power overheads respectively with 90 nm CMOS technology at 0.5-1.0 V supply voltages.