FSA201: Multimedia, USB 2.0 and Audio Switch

The FSA201 is a Double-Pole, Double Throw (DPDT) multiplexer that combines a low-distortion audio and a USB2.0 Full-Speed (FS) switch path. This configuration enables audio and USB data to share a common connector port. The architecture is designed to allow audio signals to swing below ground. This means a common USB and headphone jack can be used for personal media players and similar portable peripheral devices.

Since USB2.0 is an industry standard for shared data path in portable devices, the FSA201 also incorporates a VBUS detection capability. The FSA201 includes a power-off feature to minimize current consumption when 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

• 3Ω Typical On Resistance
• -3db Bandwidth: > 250MHz
• Low Power Consumption
• Packaged in Pb-free 10-Lead MicroPak™ (1.6 x 2.1mm), 10-pin MSOP
• Power-off Protection on Common D+/R, D-/L Ports
• Automatically Detects V_BUS for Switch Path Selection

Application Notes