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AN3959 数据表(PDF) 7 Page - STMicroelectronics

部件名 AN3959
功能描述  The purpose of this application note is to describe
PDF  65 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN3959 数据表(HTML) 7 Page - STMicroelectronics

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1.3
Schematic and block diagrams, bill of material, PCB layout
Figure 2.
Schematic-1
Line in
Line out
OUTPUT FILTER
STA381BWS
C56
NS
100nF
2.0CH & 2.1CH
MONO BTL
CONFIGURATION
NOTE:
*
R1
0 ohm
R3
0 ohm
C11
100nF
C1
100nF
C3 2u2/10V
C5
100nF
C30
1uF/10V
C31
1uF/10V
R6
11K
R7
11K
R8
27K
R9
27K
C8
1uF/10V
C9 1uF/10V
C4
1nF
C29
100nF
C428
470U/35V
R36
0ohm
R37
470R
R38
470R
1 VCC_REG
2 VSS_REG
3 OUT2B
4 GND2
5 VCC2
6 OUT2A
7 OUT1B
8 VCC1
9
GND1
10 OUT1A
11 VDD_REG
12 GND_REG
25
GNDPSUB
26
CPP
27
VDD3V3CHP
28
VDDDIG1
29
GNDDIG1
30
FFX3A
31
FFX3B
32
FFX4A
33
FFX4B
34
VREGFILT
35
AGNDPLL
36
MCLK
IC1
STA381BWS
J15
J16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
IC3
STA381BWS_NEW
1
2
3
J19
HPJCKX3.5-06
C32
220nF
C36
220nF
R10
0R
R11
0R
C37
NS
C38
NS
C40
NS
C41
NS
R30
0R
R41
0R
C42
220nF
C43
220nF
L3
SWPA6045S220MT
L1
SWPA6045S220MT
L2
SWPA6045S220MT
L4
SWPA6045S220MT
1
2
3
4
J9
SPEAKJACK2X2
C51 10uF/10V
C52 10uF/10V
1
2
3
J2
HPJCKX3.5-06
1
2
3
SW2
1
2
3
SW3
R35
47R
R44
47R
1
2
3
4
J7
HEADER2X2
J14
J18
MCLK
BICKI
LRCKI
+3V3
OUT2B
OUT2A
OUT1B
OUT1A
+VS
FFX4B
FFX4A
FFX3B
FFX3A
+3V3
F3XR
F3XL
RESET
OUT1A
OUT1B
OUT2A
OUT2B
Note 1:
The output filter for the line/HP output
path is optional (not required for the STA381BW/S).
If the 2x 47 ohm resistors (R35 and R44) are
bypassed through J14 and J18, the 2x 100 nF
capacitors (C54 and C55) must also be removed.
Note 2:
C56 is not soldered when the STA381BW/S
is configured in 2.0 or 2.1 channels; C56 is 100 nF
when the STA381BW/S is configured in mono BTL.
Refer to the schematic in Appendix A on page 63
for an example of a mono BTL application.



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