Τίτλος:
A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
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.
Συγγραφείς:
Tsakalis, K.
Vlassopoulos, N.
Lentaris, G.
Reisis, D.
Περιοδικό:
Circuits, Systems, and Signal Processing
Λέξεις-κλειδιά:
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
DOI:
10.1007/s00034-010-9231-3
