ISL54209 Datasheet, PDF (1/19 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling and Low Power Shutdown

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
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Application Note AN1406 “ISL54209EVAL1Z
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
• Single Supply Operation (V_DD) . . . . . 2.5V to 5.0V
• -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
3.3V
V_BUS
VDD
ISL54209
IN
LOGIC CONTROL
4MΩ
COM -
COM +
50kΩ
GND
CTRL
4MΩ
D-
D+
L
R
50kΩ
µCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
AUDIO
CODEC
June 10, 2010
FN6627.4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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