1

®

FN6662.1

ISL54211

MP3/USB 2.0 High Speed Switch with

Negative Signal Handling/Click and Pop

Suppression

The Intersil ISL54211 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 5.0V 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 ISL54211 logic control pins are 1.8V compatible with a

supply voltage of 2.7V to 3.6V, which allows for control via a

standard µcontroller.

The part has an audio enable control pin (CTRL) to open all

in-line switches and activate the audio click and pop circuitry.

The high OFF-isolation and special click/pop circuitry of the

audio switches eliminates click and pops in the head-phones

when the audio CODEC drivers are powering up or down or

when a headphone is inserted or removed from the

headphone jack.

It’s available in a tiny 10 Ld 1.8mmx1.4mm ultra-thin µTQFN

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

over a temperature range of -40 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

• Clickless/Popless Audio Switches

• Enable Control Pin (CTRL) to Open all Switches

• Low Distortion Headphone Audio Signals

- THD+N at 1mW into 32

Ω Load . . . . . . . . . . . . . 0.014%

• Crosstalk (20Hz to 20kHz). . . . . . . . . . . . . . . . . . . -100dB

• OFF-Isolation (20Hz to 100kHz) . . . . . . . . . . . . . . . 95dB

• -3dB Bandwidth USB Switch . . . . . . . . . . . . . . . . . 700MHz

• 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

•PDA’s

• Audio/USB Switching

Application Block Diagram

ISL54211

USB

TRANSCEIVER

HIGH-SPEED

COM -

COM +

IN

GND

D-

D+

L

R

VDD

CTRL

LOGIC CONTROL

4M

Ω

4M

Ω

CLICK

AND

POP

3.3V

200k

Ω

200k

Ω

AUDIO

CODEC

Data Sheet

August 25, 2008

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. 2008. All Rights Reserved

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