ISL54214_14 Datasheet, PDF (1/22 Pages) Intersil Corporation – USB 2.0 High-Speed x 2 Channels/Stereo Audio Dual SP3T (Dual 3 to 1 Multiplexer)

USB 2.0 High-Speed x 2 Channels/Stereo Audio
Dual SP3T (Dual 3 to 1 Multiplexer)
ISL54214
The Intersil ISL54214 is a single supply dual SP3T
analog switch that operates from a single supply in the
range of 2.7V to 4.6V. It was designed to multiplex
between audio stereo signals and two different USB 2.0
high speed differential data signals. The audio channels
allow signal swings below ground, allowing the
multiplexing of the voice and data signals through a
common headphone connector in Personal Media
Players and other portable battery powered devices.
The audio switch cells can pass ±1V ground referenced
audio signals with very low distortion (<0.03% THD+N
when driving 5mW into 32Ω loads). The USB switch
cells have very low ON capacitance (8pF) and high
bandwidth to pass USB high speed signals (480Mbps)
with minimal edge and phase distortion.
The ISL54214 is available in a tiny 12 Ld
2.2mmx1.4mm ultra-thin QFN and 12 Ld 3mmx3mm
TQFN packages. 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)”
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
Signaling Capability per USB 2.0
• Low Distortion Negative Signal Capability Audio
Switches
• Power OFF Protection
• COM Pins Overvoltage Tolerant to 5.5V
• Low Distortion Headphone Audio Signals
- THD+N at 5mW into 32Ω Load . . . . . . . . <0.03%
• Cross-talk (100kHz) . . . . . . . . . . . . . . . . . . -98dB
• OFF-Isolation (100kHz) . . . . . . . . . . . . . . . 95.5dB
• Single Supply Operation (V_DD) . . . . . . 2.7V to 4.6V
• -3dB Bandwidth USB Switches. . . . . . . . . . . 700MHz
• Available in Tiny 12 Ld µTQFN and TQFN 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 Phone
Application Block Diagram
USB
HIGH-SPEED
TRANSCEIVER
AUDIO
CODEC
USB
HIGH-SPEED
TRANSCEIVER
2D-
2D+
L
R
1D-
1D+
3.3V
V_DD
ISL54214
LOGIC CONTROL
µCONTROLLER
C0
4MΩ ^C1
COM -
V_BUS
COM +
50kΩ
1kΩ
50kΩ
GND
1kΩ
June 28, 2010
FN6816.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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