Analog universal active device: theory, design and applications

This paper introduces the concept of what we call analog Universal Active Device (UAD), as a step forward from operational amplifiers and other recently proposed active devices. The model of such device is proposed together with an approach to obtain several practical silicon implementations for it. Non ideal effects of these practical implementations are theoretically analysed, and their influence in some circuit applications is comparatively studied. Simulation results are given supporting the ideas presented here