Analysis of interpolation waveforms in time-averaging interpolative digital-to-analogue converters

An analytical model is introduced for the study of interpolation waveforms in time-averaging interpolative digital-to-analogue converters (DACs). This analytical model reveals some important phenomena related to the interpola tion process, and it can be used to determine the effects of varying indivi dual interpolation waveforms on the overall performance of DACs. This allow s strategies to be developed for minimising interpolation noise. The model can also be used to enhance the performance of many interpolation schemes. Examples of some minimisation strategies are presented, including practical results.