Abstract: A switched capacitor includes two capacitors. During the charging period, the first capacitor is connected to an input potential and a first reference potential, and the second capacitor is connected to the input potential and a second reference potential. During the discharging period, those electrodes of the first and second capacitors which have been connected to the input potential are connected to a first and a second reference potential, respectively, and those which have been connected to the first and second reference potentials, respectively, are connected to an output terminal. The switched capacitor also has a circuit that is connected to the first and second reference potentials to produce an intermediate potential therebetween so that, before the charging period, the first capacitor is connected to the intermediate potential and the first reference potential and the second capacitor is connected to the intermediate potential and the second reference potential.