To provide the same performance to the filter circuit and the integrated circuit as that of a conventional analog filter employing a digital filter.

An analog input signal S1 is given to a ΔΣ A/D converter 2, from which a binary signal S2 with a different frequency band for a signal component and a quantization noise is generated and the binary signal S2 is given to a transversal filter 3, which synthesizes every delay output from each of m-th stages among i-th stages of delay outputs obtained by delaying the binary signal S2 and generates an analog output signal S3 with a desired pass band.