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ISL54211IRUZ-T Arkusz danych(PDF) 1 Page - Intersil Corporation |
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ISL54211IRUZ-T Arkusz danych(HTML) 1 Page - Intersil Corporation |
1 / 19 page 1 ® FN6662.1 ISL54211 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. 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 10 Ld 1.8mmx1.4mm ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN package. It operates over a temperature range of -40 to +85°C. Related Literature • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” Features • 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 • Low Distortion Headphone Audio Signals - THD+N at 1mW into 32 Ω Load . . . . . . . . . . . . . 0.014% • Crosstalk (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 (RoHS Compliant) Applications • MP3 and other Personal Media Players • Cellular/Mobile Phones •PDA’s • Audio/USB Switching Application Block Diagram ISL54211 USB TRANSCEIVER HIGH-SPEED COM - COM + IN GND D- D+ L R VDD CTRL LOGIC CONTROL 4M Ω 4M Ω CLICK AND POP VBUS 3.3V 200k Ω 200k Ω µCONTROLLER AUDIO CODEC Data Sheet August 25, 2008 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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