USB2.0 DPDT 模拟信号开关 高速信号开关。
GENERAL DESCRIPTION
The SGM7227 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.
SGM7227 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 SGM7227 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 SGM7227 contains special circuitry on the D+/D- pins which allows the device to withstand a VBUS short to D+ or D- when the USB devices are either powered off or powered on.
SGM7227 is available in Green UTQFN-1.8×1.4-10L and MSOP-10 packages. It operates over an ambient temperature range of -40℃to +85℃.
>
PIN CONFIGURATIONS
FEATURES
? RON is Typically 5Ω at 3.0V
>? Voltage Operation: 1.8V to 4.3V
>? Fast Switching Times:
> tON 15ns
> tOFF 20ns
>? Crosstalk: -30dB at 250MHz
>? Off-Isolation: -35dB at 250MHz
>? Rail-to-Rail Input and Output Operation
>? Break-Before-Make Switching
>? Extended Industrial Temperature Range:
> -40℃ to +85℃
>? Available in Green UTQFN-1.8×1.4-10L and
> MSOP-10 Packages
>
APPLICATIONS
Route Signals for USB 2.0
>MP3 and Other Personal Media Players
>Digital Cameras and Camcorders
>Portable Instrumentation
>Set-Top Box
>PDAs
>
