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USB Technology Differentiates Mobile Designs

USB has become the universal interface for mobile applications. The USB port has evolved from a pure data portal to a means for file transfers, battery-charging, music listening and factory programming. To better support the industry’s convergence into one connector, Fairchild’s new USB transceiver and USB accessory detection switch bring functional enhancements without adding design complexity or increasing space and power in mobile designs.

Through its signal path expertise, Fairchild’s micro-USB switch (FSA9280A) and USB transceiver (FUSB2500) bring significant design advantages to the mobile space:

  • Auto Detection. The FSA9280A automatically detects accessories and configures the proper path for each accessory. This device can detect every accessory and charger in the market, and has a number of “reserved” resistors to accommodate new accessories such as glucometers, e-frames and audio docks. The FUSB2500 has an integrated charger detect that allows detection without additional component count.
  • Power Savings. The FSA9280A uses advanced sampling methods to minimize power consumption in the standby state, extending battery life. It also provides a negative switch capability in audio applications without consuming power; alternative solutions need a charge pump for this. Both the FSA9280A and FUSB2500 offer a low power down function that puts the device in standby when functions are not in use.
  • Audio Fidelity. Leveraging Fairchild’s signal and audio expertise, the FSA9280A features exceptionally low Total Harmonic Distortion (THD) of 0.1 percent to optimize performance.
  • Robust Protection Functions. The FSA9280A features many built-in protection functions and the FUSB2500 offers exceptionally high ESD protection, 15kV HBM, exceeding the 2kV standard.
  • Space-Savings. By integrating a MOSFET and USB IP into one IC, the FSA9280A eliminates at least five additional components and reduces Bill of Material (BOM) costs.

All of these design attributes are instrumental in delivering a rich user experience. The FSA9280A allows for every conceivable form of accessory and five future definable accessories, ushering in a full multi-media
experience. The FSA9280A packs data, charging, audio, headset and other accessory connectivity into one solution. Through its careful optimization of power, both of these products feature a power saving mode to help extend battery life for digital still cameras, portable medical and mobile applications. Through its audio expertise, Fairchild maintains signal integrity while adding new functionality. And by integrating and packing performance into small packages, Fairchild offers the smallest designs possible.

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A Dash of Maxwell’s: A Maxwell’s Equations Primer – Part One

Solving Maxwell’s Equations for real-life situations, like predicting the RF emissions from a cell tower, requires more mathematical horsepower than any individual mind can muster. These equations don’t give the scientist or engineer just insight, they are literally the answer to everything RF.

Fairchild’s USB expertise, combined with its broad portfolio of USB switches, USB transceivers and audio products, brings innovation in mobile designs. Fairchild was the first to develop USB switches and has been supporting USB transceivers for more than a decade. Fairchild will continue to invest in USB solutions that advance mobile designs and enrich the user experience.

Visit Fairchild Semiconductor to learn more about the FSA9280A micro-USB switch and FUSB2500 USB transceiver.



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