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The Intersil ISL54210 dual SPDT (Single Pole/Double Throw) switch combines 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 3.6V 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 ISL54210 incorporates circuitry for the detection of the USB V_BUS voltage, which is used to switch between the audio and USB signal sources.

It has an enable pin (CTRL) to open all switches and activate the audio click/pop (C/P) circuitry. The high off-isolation and special C/P circuitry of the audio switches eliminates click and pops in the head-phones when the audio CODEC drivers are powering up/down or when a headphone is inserted or removed from the jack.

It's available in a tiny 10 Ld 1.8mmx1.4mm ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN package. It operates over a temperature range of -40°C to +85°C.

Key Features

• High Speed (480Mbps) and Full Speed (12Mbps) Signaling Capability per USB 2.0
• Detection of VBUS Voltage on USB Cable
• 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%
• Crosstalk (20Hz to 20kHz): -100dB
• Off-Isolation (20Hz to 100kHz): 95dB
• Single Supply Operation (VDD): 2.7V to 3.6V
• -3dB Bandwidth USB Switch: 700MHz
• Low ON Capacitance @ 240MHz: 4.2pF
• Available in µTQFN and TDFN Packages
• Compliant with USB 2.0 Short Circuit Requirements Without Additional External Components
• Pb-Free (RoHS Compliant)

Applications

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