A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers

Konstantinos Tsakalis, Nikolaos Vlassopoulos, George Lentaris, Dionysios Reisis

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)421-438
Number of pages18
JournalCircuits, Systems, and Signal Processing
Volume30
Issue number2
DOIs
StatePublished - Apr 2011

Fingerprint

Filter
Pulse modulation
Oversampling
Analog-to-digital Converter
Digital Circuits
Multimedia Applications
Digital circuits
Digital to analog conversion
Theoretical Model
Field Programmable Gate Array
Field programmable gate arrays (FPGA)
Signal to noise ratio
Modulation
Computer Simulation
Hardware
Sampling
Output
Computer simulation
Design
Family

Keywords

  • Delta modulation
  • Digital-to-analog Converters
  • Pulse width modulation

ASJC Scopus subject areas

  • Signal Processing
  • Applied Mathematics

Cite this

A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers. / Tsakalis, Konstantinos; Vlassopoulos, Nikolaos; Lentaris, George; Reisis, Dionysios.

In: Circuits, Systems, and Signal Processing, Vol. 30, No. 2, 04.2011, p. 421-438.

Research output: Contribution to journalArticle

Tsakalis, Konstantinos ; Vlassopoulos, Nikolaos ; Lentaris, George ; Reisis, Dionysios. / A control-theoretic approach for efficient design of filters in DAC and digital audio amplifiers. In: Circuits, Systems, and Signal Processing. 2011 ; Vol. 30, No. 2. pp. 421-438.
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