TY - JOUR
T1 - A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers
AU - Tsakalis, Konstantinos
AU - Vlassopoulos, Nikolaos
AU - Lentaris, George
AU - Reisis, Dionysios
PY - 2011/4
Y1 - 2011/4
N2 - 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.
AB - 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.
KW - Delta modulation
KW - Digital-to-analog Converters
KW - Pulse width modulation
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U2 - 10.1007/s00034-010-9231-3
DO - 10.1007/s00034-010-9231-3
M3 - Article
AN - SCOPUS:79960068234
SN - 0278-081X
VL - 30
SP - 421
EP - 438
JO - Circuits, Systems, and Signal Processing
JF - Circuits, Systems, and Signal Processing
IS - 2
ER -