A one-way MOS analog switch

In this paper, a one-way NMOS analog switch featuring a low plug-in consumption is presented. The performances of analog switch, especially the performances of source follower are simulated under different conditions with PSPICE. Simulation results and factors affecting the deviation between input and output are analyzed, some advice on how to reduce the deviation between input and output is given. At the end of the paper, voltage relationship between input and output of the analog switch is obtained. Function of first degree, Vout=kVin+V0, is used to approximate the voltage relationship. The simulation results and the value achieved from the approximation equation are given as well.