Oversampling digital/analog converter

摘要

An oversampling digital/analog (D/A) converter is provided that has a reduced circuit area and an improved dynamic range of a converted voltage signal. The oversampling D/A converter includes an interpolation filter that receives a digital signal and oversamples the digital signal to provide a multibit digital signal. A digital noise shaper quantizes a noise contained in the digital signal passed through the interpolation filter, and an IFIR (Interpolated Finite Impulse Response) reconstruction filter converts a noise shaped digital signal in an analog signal corresponding to the noise shaped digital signal.