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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.

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 µcontroller.

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.

It's available in a tiny 10Ld 1.8mm x 1.4mm ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN package. It operates over a temperature range of -40 to +85°C.

Key Features

• High Speed (480Mbps) and Full Speed (12Mbps) Signaling Capability per USB 2.0
• Low Distortion Negative Signal Capability
• Clickless/Popless Audio Switches
• Enable Pin to Open all Switches
• Low Distortion Headphone Audio Signals
  • THD+N at 1mW into 32Ω Load 0.014%
• Cross-talk (20Hz to 20kHz) -100dB
• OFF Isolation (20Hz to 100kHz) 95dB
• Single Supply Operation (VDD) 2.7V to 5.0V
• -3dB Bandwidth USB Switch 700MHz
• Available in µTQFN and TDFN Packages
• Compliant with USB 2.0 Short Circuit Requirements Without Additional External Components
• Pb-Free Plus Anneal (RoHS Compliant)

Applications

• MP3 and other Personal Media Players
• Cellular/Mobile Phones
• PDA's
• Audio/USB Switching