DATASHEET
ISL54211 FN6662
Rev 1.00
August 25, 2008 MP3/USB 2.0 High Speed Switch with Negative Signal Handling/Click and Pop
Suppression
The Intersil ISL54211 dual SPDT (Single Pole/Double Throw)
switches combine low distortion audio and accurate USB 2.0
high speed data (480Mbps) signal switching in the same low
voltage device. When operated with a 2.7V to 5.0V single
supply these analog switches allow audio signal swings
below-ground, allowing the use of a common USB and audio
headphone connector in Personal Media Players and other
portable battery powered devices. Features The ISL54211 logic control pins are 1.8V compatible with a
supply voltage of 2.7V to 3.6V, which allows for control via a
standard Вµcontroller. Low Distortion Headphone Audio Signals
-THD+N at 1mW into 32пЃ—пЂ Load 0.014% High Speed (480Mbps) and Full Speed (12Mbps)
Signaling Capability per USB 2.0 Low Distortion Negative Signal Capability Clickless/Popless Audio Switches Enable Control Pin (CTRL) to Open all Switches Crosstalk (20Hz to 20kHz) . -100dB The part has an audio enable control pin (CTRL) to open all
in-line switches and activate the audio click and pop circuitry.
The high OFF-isolation and special click/pop circuitry of the
audio switches eliminates click and pops in the head-phones
when the audio CODEC drivers are powering up or down or
when a headphone is inserted or removed from the
headphone jack. OFF-Isolation (20Hz to 100kHz) . 95dB Single Supply Operation (VDD) . 2.7V to 5.0V -3dB Bandwidth USB Switch . 700MHz Available in ВµTQFN and TDFN Packages Compliant with USB 2.0 Short Circuit Requirements …