FSA203: Multimedia, Hi-Speed USB, Video, and Negative Swing Audio Switch with Video Amp/Filter

The FSA203 is a multimedia device that includes a Double-Pole, Double Throw (DPDT) USB / audio multiplexer, a video/microphone switch, and a video amplifier / filter path. The DPDT path combines a low-distortion audio and a USB2.0 switch path.

This configuration enables audio and USB data to share a common connector port. The architecture is designed such that audio signals are allowed to swing below ground, enabling the use of a common USB and headphone connector for personal media players and similar portable peripheral devices.

The FSA203 includes a power-off feature to minimize current consumption when Vav or Vbus is not present. This power-off circuitry is available for the common D+/R, D-/L ports only.

Typical applications involve switching in portables and consumer applications, such as cell phones, digital cameras, and notebooks with hubs or controllers.

Features

• USB: 3.5Ω Typical On Resistance
• Video/Mic: 35Ω Typical On Resistance
• Audio: 3.5Ω Typical On Resistance
• USB: -3db Bandwidth at 0pF > 745MHz
• Video: -3db Bandwidth > 615MHz
• Low-Power Shutdown Mode: 1µA Maximum
• Power-Off Protection on Common D+/R, D-/L,Video/Microphone Ports
• Packaged in Pb-free 20-Lead DQFN and2.5 x 4.5mm 20-Pin TSSOP

Application Notes