An oversampled D/A converter utilizes second order noise shaping and a sampling rate of with . What should be the bandwidth and order of the following analog smoothing filter? Assuming a Butterworth...

An oversampled D/A converter utilizes second order noise shaping and a sampling rate of with . What should be the bandwidth and order of the following analog smoothing filter? Assuming a Butterworth smoothing filter is used, estimate the attenuation at .