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參數(shù)資料
| 型號(hào)： | FSA221MUX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH AUD USB DPDT 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | USB 控制器 |
| 應(yīng)用： | 相機(jī)，移動(dòng)電話，監(jiān)控器，機(jī)頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1218 (CN2011-ZH PDF) |
| 其它名稱： | FSA221MUXDKR |
2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA221
Rev. 1.1.0
3
FS
A2
2
1
—
US
B2
.0
High
-Spe
ed
and
Audio
Swi
tches
wi
th
Nega
ti
ve
Signal
Ca
pab
il
it
y
Functional Description
The FSA221 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 high-speed USB signals and includes an automatic
Vbus-detection circuit. When a USB connector, rather
than a headphone, is connected to the ultra-portable
device the switch is automatically configured for high-
speed USB data transfer. If no Vbus is detected, and yet
VAUDIO 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 Vbus is generated as a
self-powered device or where Vbus is not removed, the
ASel pin provides the ability to switch, under software
control, to the audio path. The ASel pin is internally
terminated by a resistor to GND (typical value 3M
) and
requires no connection for the standard ultra-portable
(cell-phone, MP3, or portable media player). In an
application where the supply to the FSA221 Vbus pin is
not guaranteed to be removed, a GPIO pin can be used
to switch out of high-speed USB mode into audio mode,
using the ASel pin.
The FSA221 Vbus pin must be connected directly to Vbus
or a supply > 3.8V, not an LDO regulated down to 3.6V
or a Vbat-generated supply that may fall below 3.8V in
normal operation.
Application Diagram
V
bus
V
audio
Switch Select
Control Circuitry
D+/R
D-/L
D+
R
D-
L
A
Sel
Rpd
GND
5V
Audio
CODEC
3.0V - 3.6V
USB
Mini -AB
Connector
V
bus
ID
USB 2.0
Source
Figure 5.
Typical Application
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FSA221UMX | 功能描述:模擬開關(guān) IC USB 2.0 Hi-Speed RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| FSA223 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:USB2.0 High-Speed (480Mbps) and Audio Switches with Negative Signal Capability |
| FSA223_08 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:USB2.0 High-Speed (480Mbps) and Audio Switches with Negative Signal Capability |
| FSA223_12 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:USB2.0 High-Speed (480Mbps) and Audio Switches with Negative Signal Capability |
| FSA223L10X | 功能描述:模擬開關(guān) IC USB 2.0 Hi-Speed and Audio RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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