ISL54206A_1010 Datasheet, PDF (1/20 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling

MP3/USB 2.0 High Speed Switch with Negative
Signal Handling
ISL54206A
The Intersil ISL54206A 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 ISL54206A logic control pins are 1.8V compatible,
which allows for control via a standard µcontroller. With a
V_DD voltage in the range of 2.7V to 3.6V, the IN pin
voltage can exceed the V_DD rail allowing for the USB 5V
V_BUS 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 ISL54206A 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°C to +85°C.
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
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) . . . . . 2.5V to 5.5V
• -3dB Bandwidth USB Switches. . . . . . . . . 630MHz
• Available in µTQFN and TDFN Packages
• Pb-Free (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit Requirements
Without Additional External Components
Applications*(see page 18)
• MP3 and Other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Audio/USB Switching
Related Literature*(see page 18)
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”.
• Application Note AN1337 “ISL54206AEVAL1Z
Evaluation Board User’s Manual”.
Application Block Diagram
IN
VBUS
COM-
COM+
V_DD
ISL54206A
LOGIC
4MΩ
GND
CTRL
D-
D+
L
R
µCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
CODEC
NOTE: The L and R 50kΩ resistors to ground are not shown.
October 28, 2010
FN6515.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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