To provide a signal processing circuit and a dynamic quantity sensor capable of obtaining an output which does not contain noises caused by the offset voltage of an operational amplifier.

Electric charges (3C, Voff) which are based on the offset voltage and generated when charges are transferred from switched capacitors SC1, SC2 to a switched capacitor SC3, are accumulated in a switched capacitor SC4 by charging. Consequently, an influence of the offset voltage Voff is removed from an output voltage Vout which is determined by charges accumulated in the switched capacitors SC3 by charging.