IC Design of the Band-Gap Reference and the Triangular Waveform Generator of Class D Audio Amplifier

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Abstract:

Class D audio amplifier can extend battery life for its small cubage and high efficiency. In connection with the advantages of Class D audio amplifier, a class D audio amplifier with high efficiency and low distortion is designed in this paper. A negative feedback is established to improve the linearity of the amplifier and power supply ripple rejection ratio. Minimizing the distortion of the system requires high-speed sampling. High-speed comparator is designed to meet this requirement. Moreover, the work requires that the chip has a band-gap reference with low temperature coefficient and high power supply rejection ratio.

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757-763

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February 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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