深圳市谷科智电子有限公司

GENERAL DESCRIPTIONThe 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 VBUS short to D+ or D- when the USB devices are either powered off or powered on.

SGM7222 is available in Green TQFN-1.8×1.4-10L, MSOP-10 and UTQFN-1.8×1.4-10L packages. It operates over an ambient temperature range of -40℃ to +85℃.

PIN CONFIGURATIONS

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:

   tON 10ns

   tOFF 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℃

• Small Packages:

   MSOP-10, TQFN-1.8×1.4-10L and

   UTQFN-1.8×1.4-10L

APPLICATIONSRoute Signals for USB 2.0

MP3 and Other Personal Media Players

Digital Cameras and Camcorders

Portable Instrumentation

Set-Top Boxes

PDAs