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The Intersil ISL54210 dual SPDT (Single Pole/Double Throw)switch combines low distorTIon audio and accurate USB 2.0high speed data (480Mbps) signal switching in the same lowvoltage device. When operated with a 2.7V to 3.6V singlesupply, these analog switches allow audio signal swingsbelow-ground, allowing the use of a common USB and audioheadphone connector in Personal Media Players and otherportable battery powered devices.The ISL54210 incorporates circuitry for the detecTIon of theUSB VBUS voltage, which is used to switch between the audioand USB signal sources.The part has an audio enable control pin (CTRL) to open allin-line switches and acTIvate the audio click and pop circuitry.The high off-isolaTIon and special click/pop circuitry of theaudio switches eliminates click and pops in the head-phoneswhen the audio CODEC drivers are powering up or down orwhen a headphone is inserted or removed from theheadphone jack.It’s available in a tiny 10 Ld 1.8mmx1.4mm ultra-thin μTQFNpackage and a 10 Ld 3mmx3mm TDFN package. It operatesover a temperature range of -40°C to +85°C.
