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ISL54213IRTZ Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL54213IRTZ Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 15 page 8 FN6663.0 March 26, 2008 Detailed Description The ISL54213 device is a dual single pole/double throw (SPDT) analog switch that operates from a single DC power supply in the range of 2.5V to 5.0V. It was designed to function as a dual 2 to 1 multiplexer to select between USB differential data signals and audio L and R stereo signals. It comes in a tiny µTQFN and TDFN packages for use in MP3 players, PDAs, cellular phones and other personal media players. The part consists of two 2.5 Ω audio switches and two 5.5Ω USB switches. The audio switches can accept signals that swing below ground. They were designed to pass audio left and right stereo signals, that are ground referenced, with minimal distortion. The USB switches were designed to pass high-speed USB differential data signals with minimal edge and phase distortion. The ISL54213 was specifically designed for MP3 players, personal media players and cellular phone applications that need to combine the audio headphone jack and the USB Application Block Diagrams FIGURE 8. LOGIC CONTROL VIA MICROPROCESSOR FIGURE 9. LOGIC CONTROL VIA VBUS VOLTAGE FROM COMPUTER OR USB HUB 50k Ω ISL54213 USB TRANSCEIVER HIGH-SPEED AUDIO COM - COM + IN GND D- D+ R L VDD CTRL LOGIC CONTROL µCONTROLLER 4M Ω CODEC VBUS 3.3V 50k Ω 4M Ω ISL54213 USB TRANSCEIVER HIGH-SPEED AUDIO COM - COM + IN GND D- D+ R L VDD CTRL LOGIC CONTROL µCONTROLLER 4M Ω CODEC VBUS 3.3V 50k Ω 50k Ω 4M Ω 500k Ω ISL54213 |
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