ISL54211_14 Datasheet, PDF (1/19 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling/Click and Pop Suppression

®
Data Sheet
August 25, 2008
ISL54211
FN6662.1
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)”
Application Block Diagram
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 32Ω Load . . . . . . . . . . . . . 0.014%
• Crosstalk (20Hz to 20kHz). . . . . . . . . . . . . . . . . . . -100dB
• OFF-Isolation (20Hz to 100kHz) . . . . . . . . . . . . . . . 95dB
• Single Supply Operation (V_DD) . . . . . . . . . . . . 2.7V to 5.0V
• -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
V_BUS
3.3V
VDD
ISL54211
IN
LOGIC CONTROL
4MΩ
CTRL
4MΩ
D-
COM -
200kΩ
D+
COM +
200kΩ
CLICK
R
AND
L
POP
GND
µCONTROLLER
USB HIGH-SPEED
TRANSCEIVER
AUDIO CODEC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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