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參數(shù)資料
| 型號(hào)： | FSA201MUX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | USB2.0 Full-Speed and Audio Switches with Negative Signal Capability |
| 中文描述： | 2-CHANNEL, DBL POLE DBL THROW SWITCH, PDSO10 |
| 封裝： | 3 MM, LEAD FREE, MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大小： | 283K |
| 代理商： | FSA201MUX |
PRELIMINARY
2006 Fairchild Semiconductor Corporation
FSA201 Rev. 1.1.2
www.fairchildsemi.com
3
Functional Description
The FSA201 is a combined USB and audio switch that
enables sharing the D+/D- lines of a USB connector with
stereo audio CODEC outputs. The switch is optimized
for full-speed USB signals and includes an automatic
V
bus
-detection circuit. When a USB connector, rather
than a headphone, is connected to the ultra-portable
device the switch is automatically configured for full-
speed USB data transfer. If no V
bus
is detected, and yet
V
AUDIO
is present, the switch is configured for the low-
distortion audio switch path. The audio switch path also
handles negative signals (down to -2V), which
eliminates the need for large coupling capacitors.
For those applications where the V
bus
is generated as a
self-powered device or where V
bus
is not removed, the
A
Sel
pin provides the ability to switch, under software
control, to the audio path. The A
Sel
pin is internally
terminated by a resistor to GND (typical value 3M
Ω
) and
requires no connection for the standard ultra-portable
(cell-phone, MP3, or Portable Media Player). In an
application where the supply to the FSA201 V
bus
pin is
not guaranteed to be removed, a GPIO pin can be used
to switch out of full-speed USB mode into audio mode,
using the A
Sel
pin.
The FSA201 V
bus
pin must be connected directly to V
bus
or a supply > 3.8V, not an LDO regulated down to 3.6V
or a V
bat
-generated supply that may fall below 3.8V in
normal operation (see the Application Diagram).
Application Diagram
Vbus
Vaudio
Control Circuitry
D+/R
D-/L
D+
R
D-
L
ASel
R
pd
GND
FSA201
GND
5V
CODEC
Source
2.7V – 4.3V
Connector
Vbus
ID
Switch Select
Audio
FS - USB
USB
Mini-AB
Figure 4.
Application Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FSA203 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Multimedia High-Speed USB, Video, and Negative Swing Audio Switch with Video Amp/Filter |
| FSA203_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Multimedia High-Speed USB, Video, and Negative Swing Audio Switch with Video Amp/Filter |
| FSA203_ZAB3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FSA203BQX | 功能描述:開關(guān) IC - 各種 DPDT MM HS USB Video NSA Swt-Vid Amp-Fltr RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
| FSA203MTCX | 功能描述:開關(guān) IC - 各種 HS USB Vid Neg Swng Aud Swt Vid Amp/Filt RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
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