1

MP3/USB 2.0 High Speed Switch with Negative

Signal Handling and Low Power Shutdown

ISL54209

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 for 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.

The ISL54209 has an audio enable control pin to open all

switches and put the part in a low power state. In this

state, the device draws typically 1nA of current.

The ISL54209 is available in a small 10 Ld 1.8mm x

1.4mm or 2.1mmx 1.6mm ultra-thin µTQFN packages

and a 10 Ld 3mmx3mm TDFN package. It operates over

a temperature range of -40°C to +85°C.

Related Literature

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

Evaluation Board User’s Manual”

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 1mW into 32Ω Load. . . . . . .<0.013%

• Crosstalk (100kHz). . . . . . . . . . . . . . . . . . -95dB

• OFF-Isolation (100kHz) . . . . . . . . . . . . . . . 95dB

• -3dB Bandwidth USB Switch . . . . . . . . . . 736MHz

• Available in µTQFN and TDFN Packages

• COM Pins Over-voltage Tolerant to 5.5V

• Compliant with USB 2.0 Short Circuit Requirements

Without Additional External Components

• Pb-Free (RoHS Compliant)

Applications*(see page 16)

• MP3 and other Personal Media Players

• Cellular/Mobile Phones

•PDAs

• Audio/USB Switching

Application Block Diagram

ISL54209

USB

TRANSCEIVER

HIGH-SPEED

AUDIO

COM -

COM +

IN

GND

D-

D+

R

L

VDD

CTRL

LOGIC CONTROL

µCONTROLLER

4MΩ

CODEC

3.3V

50kΩ

50kΩ

4MΩ

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2009, 2010. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

June 10, 2010

FN6627.4