CMOS Based Voltage Bootstrapped-Schmitt Trigger (VB-ST)

Abstract

The primary inverter is the foundation of many digital circuits, including memory and latch design and is helpful in many low-power applications. It has inherent issues, such as a threshold voltage drop and vulnerability to radiation. A novel approach combines a Schmitt trigger and voltage-bootstrapped circuit to address these challenges. The Schmitt trigger enhances radiation resilience, while the voltage bootstrapping technique mitigates the threshold voltage drop. This innovative voltage bootstrapped Schmitt trigger-based inverter has been implemented using 90nm technology with different power supplies in the cadence virtuoso environment. The highlight of this proposed circuit is that only NMOS is used in both pull-up and pull-down networks. The results show that the proposed inverter circuit has a lower power consumption and delay when compared to other reference inverter circuits—the suggested circuit benefits scenarios where radiation impact is elevated, and RFID functionality is required.