FSA221 Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – USB2.0 High-Speed (480Mbps) and Audio Switches with Negative Signal Capability

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November 2006
FSA221 USB2.0 High-Speed (480Mbps) and
Audio Switches with Negative Signal Capability
Features
ƒ HS-USB: 4Ω Typical On Resistance
ƒ Audio: 3Ω Typical On Resistance
ƒ -3db Bandwidth: > 720MHz
ƒ Low Power Consumption
ƒ Packaged in Pb-free 10-Lead MicroPak™
(1.6 x 2.1mm), 10-pin MSOP (Preliminary)
ƒ Power-off Protection on Common D+/R, D-/L Ports
ƒ Automatically Detects V_bus for Switch Path
Selection
ƒ D+/R, D-/L Ports: 8pf Typical On Capacitance
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 similar 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
V_bus 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.
Ordering Information
Part Number Package Number Top Mark Pb-Free
Package Description
FSA221L10X
FSA221MUX (Preliminary)
FSA221UMX (Preliminary)
MAC010A
MUA10A
MLP010A
GK
FSA221
GL
Yes 10-Lead MicroPak, JEDEC MO-255, 1.6 x 2.1mm
Yes 10-Lead MSOP JEDEC MO-187, 3.0 mm Wide
Yes
10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm
Vbus
Vaudio
D+
R
Switch Select
Control Circuitry
ASel
R_pd
GND
D+/R
D-
D-/L
L
Figure 1. FSA221 Analog Symbol
© 2006 Fairchild Semiconductor Corporation
FSA221 Rev. 1.0.3
www.fairchildsemi.com