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

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.