The Intersil ISL54003, ISL54005, ISL54006 family of devicesare integrated audio power amplifier systems that combine amono BTL amplifier and stereo headphone amplifiers in asingle device. The devices are designed to operate from asingle +2.7V to +5V power supply. Targeted applicationsinclude handheld equipment such as cell-phones, MP3players, and games/toys.These parts contain one class AB BTL type power amplifierfor driving an 8Ω mono speaker and two class AB headphoneamplifiers for driving 16Ω or 32Ω headphone speakers.The BTL when using a 5V supply is capable of delivering800mW (typ) with 0.4% THD+N and 941mW (typ) with 1%THD+N of continuous average power into an 8Ω BTL speakerload.Each headphone amplifier when using a 5V supply is capableof delivering 50mW (typ) with 0.3% THD+N and 94mW (typ)with 1% THD+N of continuous average power into a 32Ωheadphone speaker.When in Mono Mode these devices automatically mix theactive left and right audio inputs and send the combined signalto the BTL driver. In Headphone Mode the active right channelinput is sent to the right headphone speaker and the active leftchannel is sent to the left headphone speaker.
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