Abstract
A narrowband sigma-delta (SigmaDelta) audio digital-to-analog converter (DAC) with a digital signal interpolation part and single loop, 5-bit SigmaDelta modulator in the final stage is developed. To reduce sensitivity of digital-to-analog converter (DAC) nonlinearities of the last stage, dynamic element matching (DEM) is introduced. This paper presents a MATLAB description modelling approach of the proposed DAC architecture. The SigmaDelta modulator design can be configured as a 3rd or 5th order and allows 24-bit PCM at sampling rate of 64 kHz for DVD audio application.
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