A 7.8W continuous and 19.6W burst output power fully integrated 2S Class-D amplifier with 0.005% THD+N

Mykhaylo A. Teplechuk,Franck Banag, Barry Mcadam,Tony Gribben

LASCAS（2016）

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摘要

A fully integrated filterless Class-D audio amplifier with direct two-cell(2S) battery connection delivering continuous 7.8Watt into 4Ohm load with 0.005% THD+N and 104dB SNR. Packaged in 9 ball WLSCP, it does not require any external components and operates in a supply range of 4-12V from a direct 2S battery. In a burst mode device achieves maximum output power of 19.6W into 4Ohm load with THD+N=20% from a 12V supply. The chip is fabricated in a standard 0.25um BCDMOS process with total chip area measuring 2.54mm2.

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关键词

CMOS analogue integrated circuits,audio-frequency amplifiers,2S battery connection,9 ball WLSCP,burst mode device,direct two-cell battery connection,fully integrated filterless class-D audio amplifier,power 19.6 W,power 7.8 W,resistance 4 ohm,size 0.25 mum,standard BCDMOS process,voltage 4 V to 12 V,class-D audio amplifier,high-voltage H-bridge,two-cell battery (2S) systems

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