摘要 |
A sample-and-hold circuit is provided with a plurality of first capacitors, respectively connected to a plurality of input signal lines through respective first analog switches, for sampling input signal voltages, a plurality of second capacitors, respectively connected to the plurality of first capacitors through respective second analog switches, for holding the sampled voltages, and a single operational amplifier for selectively receiving one of the voltages held in the plurality of second capacitors according to a control signal supplied thereto, and amplifying and outputting the received voltages.
|