Stereo audio amplifier

16 March 2011 Analogue, Mixed Signal, LSI

STMicroelectronics’ new TS4604 stereo audio amplifier integrates a 100 mW stereo headphone output and a driver for the audio line out connection of LCD and plasma televisions, set-top boxes, PVRs, Blu-ray players and PC-audio products such as sound cards. Its low operating power and dedicated shutdown control per function help meet eco-design objectives. In addition, self muting enhances listeners’ experiences by preventing audible pop and click noises when external factors cause the supply voltage to dip. Equipment designs can also be simplified because the device integrates charge-pump circuitry supplying negative voltage to the amplifiers. Hence only a single 3,0 V to 4,8 V external power supply is needed to sustain the amplifier’s output signal, which can be up to 2 Vrms at the line driver output.

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