FSA2000UMX Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Auto-Selecting HS-USB Switch with Cap-Free Headphone Audio Amplifier

March 2013
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
V_CC
I_{CC (Audio)}
I_CC(USB)
Package
Ordering Information
Applications
USB + Headphone Amplifier
Auto (USB with V_BUS)
YES
USB 2.0 High Speed &
Full-Speed Compliant
Class AB
40mW_RMS (32Ω)
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 40mW_RMS per channel.
Related Resources
 FSA2000 Demonstration Board
 FSA2000 Evaluation Board
 FDB323 — FSA2000 Demonstration Board User Guide
 FEB322 — FSA2000 Evaluation Board User Guide
 AN-8032 — Demonstration Board Quick-Start Guide
 AN-8031 — Utilizing the FSA2000 MUTE Function to
Reduce Audio “Click” and “Pop”
 For samples, questions, or board requests; please
contact: [e-mail].
 MP3 Portable Media Players
 Cellular Phones, Smartphones
Typical Application
FS / HS USB
Auto Switches to USB
when V_BUS present
USB Data
Cable
D+
USB TX
Audio
D-
0.1µF
R
+ ^V+
-
V-
D+/ R
OR
D-/ L
V+
Subsystem
0.1µF
L
+
-
V-
32Ω
32Ω
Headphone
Amplifiers
Eliminates large
220µF capacitors
Figure 1. Mobile Phone Example
© 2009 Fairchild Semiconductor Corporation
FSA2000 • Rev. 1.0.0
www.fairchildsemi.com