DESCRIPTION

The A4730 is a Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) double–pole double-throw (DPDT) Analog Switch featuring an On-Resistance of 4.5Ω at VCC=3V and a Low On Capacitance 3.7pF Typical.

The A4730 is compatible with the requirements of USB2.0 and the wide bandwidth needed to pass the third harmonic, resulting in signals with minimum edge and phase distortion. Superior channel-to channel crosstalk also minimizes interference. Break-before-make function for both parts eliminates signal disruption during switching from preventing both switches being enabled simultaneously.

The A4730 contains special circuitry on the switch I/O pins for applications where the VCC supply is powered-off (VCC=0), which allows the device to withstand an over-voltage condition. This device is designed to minimize current consumption even when the control voltage applied to the Sel pin is lower than the supply voltage (VCC). This feature is especially valuable to ultra-portable applications, such as cell phones, allowing for direct interface with the general purpose I/Os of the baseband processor. Other applications include switching and connector sharing in portable cell phones, PDAs, digital cameras, printers, and notebook computers.

The A4730 is available in TQFN10 (1.8x1.4) and MSOP10 packages.

FEATURES

 Wide Power Supply Range: 2.3V to 5V

 Low On Capacitance 3.7pF Typical

 Low On Resistance 4.5Ω (typ.) at 3V VDD when VSW=0.4V

 High Bandwidth (-3db): >720MHz without CL and >550MHz with CL=5pF

 Low Power Consumption: 1uA Maximum

 ESD: pass 8kV HBM test

 Over voltage tolerance (OVT) on all USB ports up to 5.25V without external components

 TTL/CMOS Compatible

 Break-Before-Make Switching

 Operation Temperature Range: -40℃ to 85℃

 Available in TQFN10 (1.8x1.4) and MSOP10 Packages APPLICATION

 Cell phone, PDAs, Digital camera, Notebook, LCD Monitor, TV, SET-TOP BOX