A multiplication circuit comprises a plurality of the first switching means for receiving a common analog input voltage and a reference voltage and for alternatively outputting the input voltage or the reference voltage, the first capacitive coupling with a plurality of capacitances for receiving outputs of the first switching means are inputted, the first inverted amplifier for receiving an output of the first capasitive coupling, an output of the first inverted amplifier being fed back to its input; the second inverted amplifier for receiving the output of the first inverted amplifier, an output of the second inverted amplifier being fed back to its inputand characterized in that one or more of the capacitances in the first capacitive coupling is connected to the second capacitive coupling with a plurality of capacitances and that a plurality of the second switching means are connected to each capacitances of the second capacitive coupling, the second switching means alternatively outputting the analog input voltage or the reference voltage.