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Abstract

An ADC which samples an analog input signal at a sampling frequency and converts the analog input signal to a digital output signal, has N analog digital converter (ADC) channels which convert the analog input signal into the digital output signal by time interleaving, a channel synthesizer which synthesizes channel digital signals output respectively by the ADC channels to generate the digital output signal, an adaptive filter provided at at least one output of the ADC channels, and a correction circuit which generates a coefficient of the adaptive filter in accordance with the digital output signal. The correction circuit calculates a DC component of an image signal component, from among an analog input signal component and the image signal component corresponding to error, both being included in the digital output signal, and calculates the coefficient such that the DC component is suppressed on the basis of the DC component.

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