Auto-Selecting HS-USB Switch
Description
FSA2000 – 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 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 (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 40mWRMS 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: 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
Audio
D0.
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
FSA2000 – Auto-Selecting HS-USB Switch with Cap-Free Headphone Audio Amplifier
Switch
Pin Descriptions
Pin #
1 2 3 4 5
6
7 8 9 10 1...
Similar Datasheet
