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Switching-mode audio amplifier based on a ΔΣ A/D converter

Jabłoński Jarosław, Lewandowski Marcin

International Journal of Electronics and Telecommunications

2024

Vol. 70, No. 2

301--306

The article describes the design and implementation of a modular hardware platform intended for testing and measuring various configurations of switching-mode audio amplifiers based on sigma-delta modulation. Two single-channel power amplifier modules were designed and manufactured, along with a stereophonic module serving as the basic source of modulated signals. Additionally, measurements were conducted on the fundamental parameters of the completed amplifier, such as harmonic distortion level, dynamic range, and output power. The developed platform serves as a foundation for modifications and further advancement in the technology of building switching-mode audio amplifiers.