参数资料
型号: FSA321UMX
厂商: Fairchild Semiconductor
文件页数: 6/12页
文件大小: 0K
描述: IC SWITCH MULTIMEDIA 10-UMLP
标准包装: 5,000
功能: 音频,USB 开关
电路: 1 x DPDT
导通状态电阻: 11 欧姆(USB),2.7 欧姆(音频)
电压电源: 单电源
电压 - 电源,单路/双路(±): 1.8 V ~ 4.3 V
电流 - 电源: 500µA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-UFQFN
供应商设备封装: 10-uMLP(1.4x1.8)
包装: 带卷 (TR)
2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA321
Rev.1.0.6
3
FS
A3
2
1
US
B2
.0
Hi
-Spe
ed
and
Aud
io
Swi
tches
wi
th
Ne
gative
Signal
Ca
pab
il
it
y
Functional Description
The FSA321 is a combined USB and audio switch that
enables sharing the D+/D- lines of a USB connector with
stereo audio CODEC outputs. The USB Sel pin has an
internal pull-down resistor that results in a default audio-
mode configuration. The switch can be configured for
auto USB detection by connecting the VBUS pin to the
USB Sel pin. The audio switch path also handles
negative signals, eliminating the need for large coupling
capacitors and greatly reducing the potential for audio
pop. Termination resistors on the audio R and L ports
are enabled when the switch is in USB mode, this also
helps reduce audio pop when enabling the audio path.
The FSA321 allows for an audio override state by
forcing A/LP Sel high when USB Sel is high. This is
useful for USB car kit applications or if the device is in a
cradle charger
when “Send/End” is pressed.
Application Diagram
USB 2.0
Hi-Speed
Controller
Audio
CODEC
FSA321
D+
D-
R
L
D+/R
D-/L
USB Sel
VCC
0.1F
S
ha
re
d
U
SB
a
nd
A
u
d
io
Co
n
ne
c
to
r
Figure 3. Typical Application Diagram
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FSA3259 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Dual SP3T Analog Switch
FSA3259BQX 功能描述:模拟开关 IC FINISHED GOOD RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻(最大值):0.1 Ohms 切换电压(最大): 开启时间(最大值): 关闭时间(最大值): 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16