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ISL54205B

更新时间： 2024-11-20 11:54:39
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英特矽尔 - INTERSIL 开关
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16页 701K
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MP3/USB 2.0 High Speed Switch with Negative Signal Handling

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ISL54205B 数据手册

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ISL54205B  
®
Data Sheet  
September 25, 2007  
FN6557.0  
MP3/USB 2.0 High Speed Switch with  
Negative Signal Handling  
Features  
• High Speed (480Mbps) and Full Speed (12Mbps)  
Signaling Capability per USB 2.0  
The Intersil ISL54205B 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 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.  
• Low Distortion Negative Signal Capability  
• Detection of V  
BUS  
Voltage on USB Cable  
• Control Pin to Open all Switches and Enter Low Power  
State  
• Low Distortion Headphone Audio Signals  
- THD+N at 20mW into 32Ω Load . . . . . . . . . . . . . <0.1%  
The ISL54205B incorporates circuitry for detection of the USB  
• Cross-talk (20Hz to 20kHz) . . . . . . . . . . . . . . . . . . -110dB  
V
voltage, which is used to switch between the audio and  
BUS  
• Single Supply Operation (V ) . . . . . . . . . . . . 2.7V to 3.6V  
DD  
USB signal sources in the portable device. The part has a  
control pin to open all the switches and put the part in a low  
power down state.  
• -3dB Bandwidth USB Switch. . . . . . . . . . . . . . . . . 630MHz  
• Available in µTQFN and TDFN Packages  
• Pb-Free (RoHS Compliant)  
The ISL54205B is available in a small 10 Ld 2.1mmx1.6mm  
ultra-thin µTQFN package and a 10Ld 3mmx3mm TDFN  
package. It operates over a temperature range of -40 to  
+85°C.  
• Compliant with USB 2.0 Short Circuit Requirements  
Without Additional External Components  
Applications  
Related Literature  
• Application Note AN1280 “ISL54205EVAL1Z Evaluation  
Board User’s Manual.  
• MP3 and Other Personal Media Players  
• Cellular/Mobile Phones  
• PDA’s  
• Technical Brief TB363 “Guidelines for Handling and  
Processing Moisture Sensitive Surface Mount Devices  
(SMDs)”  
• Audio/USB Switching  
• Application Note AN557 “Recommended Test Procedures  
for Analog Switches”  
Application Block Diagram  
V
DD  
µCONTROLLER  
ISL54205B  
V
BUS  
CTRL  
LOGIC CIRCUITRY  
22kΩ  
USB  
4MΩ  
4MΩ  
HIGH-SPEED  
D-  
COM -  
COM +  
TRANSCEIVER  
D+  
50kΩ  
50kΩ  
L
R
CODEC  
GND  
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. 2007. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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