In summary, a sampled DAC's inherent zero-order hold effect results in a distorted output spectrum that is frequency dependent and follows a magnitude response according to the sinc function. It is therefore possible to design a digital filter to compensate for this effect. There are a number of trade-offs inherent with digital inverse sinc filters, however, such as extra required hardware and sample rate restrictions. The AD9957 is an example of an ADI DDS that integrates a digital inverse sinc filter in order to save board space and ease the design process.