参数资料
型号: FSA223UMX
厂商: Fairchild Semiconductor
文件页数: 10/16页
文件大小: 0K
描述: MUX DPDT AUDIO/USB2.0 10UMLP
标准包装: 5,000
功能: 多路复用器
电路: 1 x DPDT
安装类型: 表面贴装
封装/外壳: 10-UFQFN
供应商设备封装: 10-UMLP
包装: 带卷 (TR)
2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA223 Rev. 1.0.4
3
FSA223
USB2.0
High-Speed
(480Mbps)
and
Audi
o
Switche
s
with
Negative
Signal
Capability
Functional Description
The FSA223 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 VCC-detection circuit. The
FSA223 detects the presence of VCC and defaults to
USB mode. Both the USB and audio switch paths
also handle negative signals, which eliminates the
need for large coupling capacitors.
The ASel pin is internally terminated by a resistor to
GND (typical value: 3 M
Ω) and results in a default
USB connection. For optimal performance, VCC
should be connected directly to the device battery.
Application Diagram
V
CC
V
audio
Switch Select
Control Circuitry
D+/R
D-/L
D+
R
D-
L
A
Sel
Rpd
GND
Audio
CODEC
2.7V - 5.5V
USB
Mini -AB
Connector
ID
USB 2.0
Source
2.7V - 5.5V
Figure 5.
Typical Application
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