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FSA2000 Datasheet, PDF (1/2 Pages) Fairchild Semiconductor – Auto-Selecting HS-USB Switch with Cap-Free Headphone Audio Amplifier | |||
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March 2010
FSA2000
Auto-Selecting HS-USB Switch with Cap-Free Headphone
Audio Amplifier
Features
Switch Type
Switch Mechanism
USB Detection
USB
Audio Amplifier
Amplifier Output Power
Amplifier Gain
THD+N
SNR
PSRR
VCC
ICC (Audio)
ICC(USB)
Package
Ordering Information
Applications
USB + Headphone Amplifier
Auto (USB with VBUS)
YES
USB 2.0 High Speed &
Full-Speed Compliant
Class AB
40mWRMS (32â¦)
0dB
0.1%
-90dB
-95dB
2.7 to 4.3V
3mA
6µA
16- Lead UMLP 1.80 x 2.60 x
0.55mm, 0.40mm pitch
FSA2000UMX
Description
The FSA2000 is a low-cost integrated HS-USB and audio
switch that incorporates an audio headphone amplifier. This
solution eliminates many of the discrete parts currently used
in stereo headset applications. It provides stereo headphone
drivers designed to operate with a ground-centered output
signal. This allows for the removal of large and expensive
DC blocking capacitors. The headphone drivers are capable
of driving up to 40mWRMS per channel.
Related Resources
 FSA2000 Demonstration Board
 FSA2000 Evaluation Board
 FDB323 â FSA2000 Demonstration Board User Guide
 FEB322 â FSA2000 Evaluation Board User Guide
 AN-8032 â Demonstration Board Quick-Start Guide
 AN-8031 â Utilizing the FSA2000 MUTE Function to
Reduce Audio âClickâ and âPopâ
 For samples, questions, or board requests; please
contact: Analog.Switch@fairchildsemi.com.
 MP3 Portable Media Players
 Cellular Phones, Smartphones
Typical Application
FS / HS USB
Auto Switches to USB
when VBUS present
USB Data
Cable
D+
USB TX
D-
0.1µF
R
+ V+
-
V-
D+/ R
OR
D-/ L
Audio
V+
Subsystem
0.1µF
L
+
-
V-
32â¦
32â¦
© 2009 Fairchild Semiconductor Corporation
FSA2000 ⢠Rev. 1.0.0
Headphone
Amplifiers
Eliminates large
220µF capacitors
Figure 1. Mobile Phone Example
www.fairchildsemi.com
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