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34825 bảng dữ liệu(PDF) 34 Page - Freescale Semiconductor, Inc

tên linh kiện 34825
Giải thích chi tiết về linh kiện  Micro-USB Interface IC Supporting Universal Charging Solution and Wired Accessories
PDF  39 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34825 bảng dữ liệu(HTML) 34 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
34
Freescale Semiconductor
34825
TYPICAL APPLICATIONS
TYPICAL APPLICATIONS
be less than 22 nF. A 4.7 nF X5R capacitor is recommended
for the typical application. The OUT pin requires a 1.0 μF
decoupling capacitor; a 0.01 μF capacitance is enough for
the VDDIO pin.
TYPICAL APPLICATIONS
INTERFACE CIRCUIT IN A CELL PHONE
When the 34825 is used in a cell phone. The typical circuit
is shown in the Figure 27. The I2C bus need two pull-up
resistors. Typically they are 4.7 k
Ω. When the audio outputs
of the cell phone baseband or application processor are
direct drive signals, the audio signals can be connected to the
corresponding pins of 34825 directly. Otherwise these
signals need DC-blocking capacitors to remove the DC level.
VDDIO
I2C_SDA
I2C_SCL
INT
VDDIO
RxD
TxD
D+
D-
TEST1
TEST2
VDD
ID
DP
DM
GND
VBUS
ID
D+
D-
GND
I2C
UART
USB Xcvr
GPIO
Baseband
SHLD
Test
Interface
OUT
VBUS
MC34673
ISET
Audio
4.7 nF
1.0 µF
Li+
1.0 µF
9.1 k
12 k
2x4.7 k
MIC
SPK_L
SPK_R
2 k
VAIO
*
*
For direct-drive audio output, these DC
blocking capacitors are not needed
* :
0.1 µF
Figure 27. Interface Circuit in a Cell Phone System



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