A new adustable Schmitt Trigger based on Dual Control Gate-Floating Gate Transistor (DCG-FGT)

Abstract

This paper presents a low voltage adjustable CMOS Schmitt trigger using DCG-FGT transistor. Simple circuit is introduced to provide flexibility to program the hysteretic threshold in this paper. The hysteresis can be controlled accurately at a large voltage range. The proposed Schmitt trigger has been designed using 90nm 1.2V CMOS technology and simulated using Eldo with PSP device models. The simulation results show rail-to-rail operation and independently adjustable switching voltages VTH- (low switching voltage) and VTH+(high switching voltage).