FSA321

FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability March 2013 FSA321 — USB2.0 Hi-Speed (480Mbps) and Audio Switches with Negative Signal Capability and Built-in Termination on Unselected Audio Paths Features  Audio: 1.8 Typical On Resistance  HS-USB: 8 Typical On Resistance  HS-USB: 5pF Typical On Capacitance  USB Path -3db Bandwidth: > 720MHz  Negative Swing Capable Audio Channel  Power-off Protection on Common D+/R, D-/L Ports  Automatic USB Detection (Configurable)  OVT on all I/O Ports  Flow-Through Pin Out Eliminates PCB Vias  Built-In Termination on Unselected Audio Paths to Inhibit Audio Pop Applications  MP3, Cell Phone, PDA, Digital Camera, and Notebook  LCD Monitor, TV, and Set-Top Box Description The FSA321 is a Double-Pole, Double Throw (DPDT) multiplexer that combines a low-distortion audio and a USB2.0 High-Speed (HS) 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 portable peripheral devices. Since USB2.0 is an industry standard for shared datapath in portable devices, FSA321 can be configured for automatic VBUS detection. The FSA321 includes a power-off feature as well as over-voltage tolerance to minimize current consumption when VSW exceeds VCC. Typical applications involve switching in portables and consumer appl...