PURPOSE: To form a switched capacitor circuit device of a small area on a substrate and to realize a substrate of a small area by providing regions C1, C2,...Cn for capacitor element array circuit formation with transverse widths Wc1, Wc2...Wcn which correspond to the number of unit capacity elements forming the capacity element array and are different from each other.

CONSTITUTION: Regions C1, C2...Cn for first, second,...nth capacity element array circuit formation are provided with first, second...nth transverse widths Wc1, Wc2...Wcn which are different each other and correspond to numbers k1, k2,...kn of unit capacity elements which form capacity element array of first, second...nth capacity element circuits c1, c2...cn. Thereby, it is possible to form capacity element array circuits c1, c2,...cn without making invalid regions remain in the regions C1, C2,...Cn for the first, second...nth capacity element array circuit formation.