An analogue switch using a current conveyor

Abstract

An analogue switch using a current conveyor CCII–7 is presented. The proposed switch can simulate a true switch with transfer of both voltage and current. A theory of operation is described. The proposed switch is verified by using the PSPICE program with a 0.5 μm MOSFET model from MIETEC. Simulation results show that the proposed switch yields an operational range between −300 mV and 300 mV with a supply voltage of ±1.2 V and a load resistor of 100 kΩ. An error in this range is lower than 2%. Switching of a 1 MHz sine wave is also shown.