Datasheet
June 2012
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSA201 Rev. 1.2.2
FSA201 USB2.0 Full-Speed and Audio Switches with Negative Signal Capability
FSA201 — USB2.0 Full-Speed and Audio Switches
with Negative Signal Capability
Features
3 Typical ON Resistance
-3db Bandwidth: > 250MHz
Low Power Consumption
Packaged in Pb-free 10-pin MSOP and
10-Lead MicroPak™ (1.6 x 2.1mm)
Power-off Protection on Common D+/R, D-/L Ports
Automatically Detects V
BUS
for Switch Path
Selection
Applications
Cell Phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
Description
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 V
BUS
detection capability. The FSA201 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 Packing Description
FSA201L10X MAC010A 10-Lead MicroPak, JEDEC MO-255, 1.6 x 2.1mm
FSA201MUX MUA10A 10-Lead MSOP, JEDEC MO-187, 3.0mm Wide
Vbus
Vaudio
Switch Select
Control Circuitry
D+/R
D-/L
D+
R
D-
L
ASel
R
pd
GND
-
Figure 1. FSA201 Analog Symbol