| 摘要 |
PROBLEM TO BE SOLVED: To cancel the impact of noise propagating via a parasitic capacitance, when there is a differential input circuit, constituted as an integrated circuit, on a SOI substrate.SOLUTION: In a constitution where there are an operational amplifier 9 outputting a signal depending on a pair of differential inputs, and a noise source 6 for varying the potential of a support substrate by operation, on a SOI substrate 1, one end of a capacitor C1 having a parasitic capacitance CS1a for a support substrate 2 is connected to the side of a non-inverting input terminal, out of the pair of differential inputs, that is less susceptible to potential variation by a noise source 6.SELECTED DRAWING: Figure 1 |
