廬
ISL54206
Data Sheet
December 18, 2006
FN6409.0
MP3/USB 2.0 High Speed Switch with
Negative Signal Handling
The Intersil ISL54206 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.
The ISL54206 logic control pins are 1.8V compatible which
allows for control via a standard 碌controller. With a VDD
voltage in the range of 2.7V to 3.6V the IN pin voltage can
exceed the VDD rail allowing for the USB 5V VBUS 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 ISL54206 is available in a small 10 Ld 2.1mmx1.6mm
ultra-thin 碌TQFN package and a 10 Ld 3mmx3mm TDFN
package. It operates over a temperature range of -40 to
+85擄C.
Features
鈥?High Speed (480Mbps) Signaling Capability per USB 2.0
鈥?Low Distortion Negative Signal Capability
鈥?Control Pin to Open all Switches and Enter Low Power
State
鈥?Low Distortion Headphone Audio Signals
- THD+N at 20mW into 32惟 Load . . . . . . . . . . . . . <0.1%
鈥?Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB
鈥?Single Supply Operation (V
DD
) . . . . . . . . . . . . 1.8V to 5.5V
鈥?-3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz
鈥?Available in 碌TQFN and TDFN Packages
鈥?Pb-Free Plus Anneal (RoHS Compliant)
鈥?Compliant with USB 2.0 Short Circuit Requirements
Without Additional External Components
Applications
鈥?MP3 and Other Personal Media Players
鈥?Cellular/Mobile Phones
鈥?PDA鈥檚
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
鈥?Application Note AN557 鈥淩ecommended Test Procedures
for Analog Switches鈥?/div>
鈥?Audio/USB Switching
Application Block Diagram
V
DD
ISL54206
USB AND HEADPHONE JACK
IN
VBUS
LOGIC CIRCUITRY
4M惟
D-
COM-
D+
CTRL
碌CONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
COM+
50k惟
L
R
CODEC
50k惟
GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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