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AN3959 Datasheet(PDF) 63 Page - STMicroelectronics

Part # AN3959
Description  The purpose of this application note is to describe
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3959 Datasheet(HTML) 63 Page - STMicroelectronics

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Appendix A
Mono BTL schematic
Figure 54.
Mono BTL schematic
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
100nF
C36
100nF
R10
6R2
R11
6R2
C37
100nF
C38
100nF
L3
SWPA6045S220MT
L1
SWPA6045S220MT
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
1
2
J9
MCLK
BICKI
LRCKI
+3V3
OUT-
OUT+
+VS
FFX4B
FFX4A
FFX3B
FFX3A
+3V3
F3XR
F3XL
RESET
OUT+
OUT-
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.



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