Low Voltage high Performance Floating Gate and Quasi Floating Gate CDTA

Abstract

A low voltage and low power current differencing transconductance amplifier (CDTA) based on Floating gate MOSFET (FGMOS) and Quasi-floating gate MOSFET (QFGMOS) is presented. The use of QFGMOS eliminates the restrictions accompanying the other low voltage and low power techniques like increased preliminary charge confined in the floating gate, degraded gain-bandwidth product, silicon area etc. The proposed circuits have been simulated using spice simulation software 180nm technology of analog devices LtSpice XVII and supply voltage used for this is ±1V.