Sampling and holding circuit

摘要

An analog input voltage is inputted to the first sampling and holding circuit and the second sampling and holding circuit is connected to an output of the first sampling and holding circuit. The output of the first and second sampling and holding circuits are inputted to a multiplexer which alternatively outputs the output of first sampling and holding circuit or the second sampling and holding circuit. When one of the first and second sampling and holding circuits is refreshed, the output of the other sampling holding circuit is selected to be outputted from the multiplexer. <MATH>