CMOS fully differential second-generation current conveyor

The design of a CMOS fully differential second generation current conveyor is presented. The proposed circuit was designed to incorporate the current sensing technique into a fully differential version of a differential diffe rence amplifier (DDA). A low power class AB circuit realisation has been im plemented in 1.2 mu m CMOS technology. A variable gain amplifier (VGA) desi gned to incorporate the circuit has been shown to exhibit constant, low pow er consumption and constant, wide bandwidth at different gain settings. Exp erimental results of the proposed circuits are presented.