ISL54212 Datasheet, PDF (1/15 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 ISL54212 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 2.5V to 5.5V
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 ISL54212 logic control pins are 1.8V compatible which
allows for control via a standard µcontroller. The part has an
audio enable control pin to open all the switches and put the
part in a low power state.
The ISL54212 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
September 18, 2007
ISL54212
FN6556.0
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 15mW into 32Ω Load . . . . . . . . . . . . <0.06%
• 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
• MP3 and Other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Audio/USB Switching
VBUS
IN
COM-
V_DD
ISL54212
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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