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參數(shù)資料
| 型號(hào)： | ISL54209 |
| 廠商： | Intersil Corporation |
| 英文描述： | MP3/USB 2.0 High Speed Switch with Negative Signal Handling and Low Power Shutdown |
| 中文描述： | MP3/USB 2.0高的負(fù)信號(hào)處理和高速低功耗關(guān)斷開關(guān) |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 718K |
| 代理商： | ISL54209 |
1
FN6627.0
ISL54209
MP3/USB 2.0 High Speed Switch with
Negative Signal Handling and Low Power
Shutdown
The Intersil ISL54209 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 2.5V to 5.0V single
supply, this analog switch allows 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 ISL54209 logic control pins are 1.8V compatible, which
allows for control via a standard μcontroller. With a VDD
voltage in the range of 2.5V to 3.6V, the IN pin voltage can
exceed the VDD rail allowing the USB 5V V
BUS
voltage from
a computer to directly drive the IN pin to switch between the
audio and USB signal sources in the portable device. The
part has an audio enable control pin to open all the switches
and put the part in a low power state.
The ISL54209 is available in a small 10 Ld 2.1mmx1.6mm
ultra-thin μTQFN package and a 10 Ld 3mmx3mm TDFN
package. It operates over a temperature range of -40°C 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
Low Power Shutdown State
Low Distortion Headphone Audio Signals
- THD+N at 20mW into 32
Ω
Load . . . . . . . . . . . . <0.07%
Crosstalk (100kHz) . . . . . . . . . . . . . . . . . . . . . . . . . -95dB
OFF Isolation (100kHz) . . . . . . . . . . . . . . . . . . . . . . 95dB
Single Supply Operation (V
DD
) . . . . . . . . . . . . 2.5V to 5.0V
-3dB Bandwidth USB Switch. . . . . . . . . . . . . . . . . 736MHz
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
PDAs
Audio/USB Switching
Application Block Diagram
ISL54209
USB
TRANSCEIVER
HIGH-SPEED
AUDIO
CODEC
U
COM -
COM +
IN
GND
D-
D+
R
L
VDD
CTRL
LOGIC CONTROL
μCONTROLLER
4M
Ω
V
BUS
3.3V
50k
Ω
50k
Ω
4M
Ω
Data Sheet
December 20, 2007
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
All other trademarks mentioned are the property of their respective owners.
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