參數(shù)資料
型號(hào): FSA223UMX
廠商: Fairchild Semiconductor
文件頁數(shù): 10/16頁
文件大小: 0K
描述: MUX DPDT AUDIO/USB2.0 10UMLP
標(biāo)準(zhǔn)包裝: 5,000
功能: 多路復(fù)用器
電路: 1 x DPDT
安裝類型: 表面貼裝
封裝/外殼: 10-UFQFN
供應(yīng)商設(shè)備封裝: 10-UMLP
包裝: 帶卷 (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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