FSA221_07 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

ƒ HS-USB: 4Ω Typical On Resistance ƒ HS-USB: 4.5pF Typical On Capacitance ƒ Audio: 3Ω Typical On Resistance ƒ -3db Bandwidth: > 720MHz ƒ Low Power Consumption ƒ Power-off Protection on Common D+/R, D-/L Ports ƒ Automatically Detects Vbus for Switch Path Selection

Applications

ƒ Cell Phone, PDA, Digital Camera, and Notebook ƒ LCD Monitor, TV, and Set-Top Box

Description

The FSA221 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 data- path in portable devices, the FSA221 also incorporates a V bus detection capability. The FSA221 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. IMPORTANT NOTE: For additional performance information, please contact analogswitch@fairchildsemi.com

Ordering Information

Part Number Package Number Top Mark Pb-Free Package Description FSA221L10X MAC010A GK Yes 10-Lead Mi croPak, JEDEC MO-255, 1.6 x 2.1mm FSA221MUX MUA10A FSA221 Yes 10-Lead MSOP JEDEC MO-187, 3.0 mm Wide FSA221UMX MLP010A GL Yes 10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm Vbus Vaudio Switch Select Control Circuitry D+/R D-/L ASel Rpd GND R L Figure 1. FSA221 Analog Symbol

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA221 Rev. 1.0.6 18 FSA221 — USB2.0 High-Speed and Audio Switches with Negative Signal Capability