ISL54206 Datasheet, PDF (1/13 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling

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Data Sheet
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 µcontroller. 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 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 Note AN557 “Recommended Test Procedures
for Analog Switches”
Application Block Diagram
December 18, 2006
ISL54206
FN6409.0
Features
• High Speed (480Mbps) Signaling Capability per USB 2.0
• Low Distortion Negative Signal Capability
• Control Pin to Open all Switches and Enter Low Power
State
• Low Distortion Headphone Audio Signals
- THD+N at 20mW into 32Ω Load . . . . . . . . . . . . . <0.1%
• Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB
• Single Supply Operation (V_DD) . . . . . . . . . . . . 1.8V to 5.5V
• -3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz
• Available in µTQFN and TDFN Packages
• Pb-Free Plus Anneal (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit Requirements
Without Additional External Components
Applications
• MP3 and Other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Audio/USB Switching
VBUS
IN
COM-
V_DD
ISL54206
LOGIC CIRCUITRY
4MΩ
CTRL
D-
D+
COM+
50kΩ L
R
50kΩ
GND
µCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
CODEC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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