Sample-and-hold circuit device

摘要

A sample-and-hold circuit device which includes a plurality of sample-and-hold circuits and a comparator/amplifier for comparing a reference potential with an output signal which is output from the plurality of sample-and-hold circuits so as to amplify a difference between these two signals. An output of the comparator/amplifier is fed back to respective control terminals of the different sample-and-hold circuits, each being provided as a level control signal. In another embodiment, a plurality of adding circuits are provided for adding the outputs of the plurality of sample-and-hold circuits and then comparing this value with an arbitrary reference potential, whereby a difference between the sum value and the arbitrary reference potential is amplified and fed back to the control terminals of the sample-and-hold circuits.