@article{3025405,
    title = "A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers",
    author = "Tsakalis, K. and Vlassopoulos, N. and Lentaris, G. and Reisis, D.",
    journal = "Circuits, Systems, and Signal Processing",
    year = "2011",
    volume = "30",
    number = "2",
    pages = "421-438",
    issn = "0278-081X, 1531-5878",
    doi = "10.1007/s00034-010-9231-3",
    keywords = "Control-theoretic approach;  Digital amplifiers;  Digital audio amplifiers;  Digital-to-analog converters;  Efficient designs;  Hardware complexity;  Modulation components;  Multimedia applications;  Output filters;  Over sampling;  Pulse generation;  Pulse width;  Signal to noise;  Switching rates;  Theoretical models, Algorithms;  Audio frequency amplifiers;  Computer simulation;  Digital integrated circuits;  Modulators;  Pulse generators;  Signal to noise ratio, Modulation",
    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. © 2010 Springer Science+Business Media, LLC."
}