Circuits, Systems, and Signal Processing

, Volume 30, Issue 2, pp 421–438 | Cite as

A Control-Theoretic Approach for Efficient Design of Filters in DAC and Digital Audio Amplifiers

  • Konstantinos Tsakalis
  • Nikolaos Vlassopoulos
  • George Lentaris
  • Dionysios Reisis
Article

Abstract

A control-theoretic approach in designing Digital-to-Analogue Converters and Digital Amplifiers which leads to improved performance in Audio and Multimedia applications is presented in this paper. The design involves an over-sampling and a pulse modulation component which is driven by a pulse generation algorithm based on the characteristics of the output filter. The theoretical model results in a family of digital circuits whose operation is verified by computer simulations achieving a performance of Signal-to-Noise Ratio of 147 dB at a switching rate of 90 MHz. Implementation and hardware complexity issues are discussed based on a FPGA realization of the algorithm.

Keywords

Pulse width modulation Delta modulation Digital-to-analog converters 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Konstantinos Tsakalis
    • 1
  • Nikolaos Vlassopoulos
    • 2
  • George Lentaris
    • 3
  • Dionysios Reisis
    • 3
  1. 1.Electrical EngineeringArizona State UniversityTempeUSA
  2. 2.LORIA MAIA TeamINRIA Nancy-Grand EstFrance
  3. 3.Electronics Laboratory, Physics DepartmentNational and Kapodistrian University of AthensPanepistimiopolis, AthensGreece

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