High Speed USB 2.0
SGM7222 (480Mbps) DPDT Analog Switch
GENERAL DESCRIPTION
The SGM7222 is a high-speed, low-power double-pole/
double-throw (DPDT) analog switch that operates from a
single +1.8V to +4.3V power supply.
SGM7222 is designed for the switching of high-speed
USB 2.0 signals in handset and consumer applications,
such as cell phones, digital cameras, and notebooks with
hubs or controllers with limited USB I/Os.
The SGM7222 has low bit-to-bit skew and high
channel-to-channel noise isolation, and is compatible
with various standards, such as high-speed USB 2.0 (480
Mbps). Each switch is bidirectional and offers little or no
attenuation of the high-speed signals at the outputs. Its
bandwidth is wide enough to pass high-speed USB 2.0
differential signals (480 Mb/s) with good signal integrity.
The SGM7222 contains special circuitry on the D+/D-
pins which allows the device to withstand a V
BUS short to
D+ or D- when the USB devices are either powered off or
powered on.
SGM7222 is available in Pb-free WQFN-10 and MSOP-10
packages. It operates over an ambient temperature range
of -40℃ to +85℃.
APPLICATIONS
Route Signals for USB 2.0
MP3 and Other Personal Media Players
Digital Cameras and Camcorders
Portable Instrumentation
Set-Top Box
PDAs
FEATURES
− RON is Typically 4.5Ω at +3.0V
− Low Bit-to-Bit Skew: 50ps (TYP)
− Voltage Operation : +1.8V to +4.3V
− Fast Switching Times:
t
ON 10ns
t
OFF 22ns
− Low Crosstalk: -41dB at 250MHz
− Power-Off Protection when V
+ = 0V,
D+/D- Pins can Tolerate up to 5.25V
− High Off-Isolation: -35dB at 250MHz
− Rail-to-Rail Input and Output Operation
− Break-Before-Make Switching
− Extended Industrial Temperature Range:
-40℃ to +85℃
− Lead (Pb) Free WQFN-10 and MSOP-10 Packages
BLOCK DIAGRAM
REV.A
SG Micro Limited
www.sg-micro.com
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