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Board Layouts, Bill of Materials, and Schematic
5.4
TPA3255EVM Schematics
The schematics for TPA3255EVM is illustrated in
J3
1
INA-RCA
RCA INPUT
R9
2
INA/AB
3
100k
INPUT SE A
LEFT+
SE AB
DIFF A+
GND
J14
INB-RCA
1
RCA INPUT
R43
2
INB
3
100k
INPUT SE B
LEFT-
DIFF A-
GND
SPKB-OUT
R57
3.3V
RESET
RESET-SW
1.00k
RST-AIB
CLIP_OTW
FROM DUT
FAULT
SPKD-OUT
J18
INC-RCA
1
RCA INPUT
2
R45
INC/CD
3
100k
INPUT SE C
RIGHT+
SE CD
DIFF C+
GND
J15
1
IND-RCA
RCA INPUT
2
IND
R48
3
100k
INPUT SE D
RIGHT-
DIFF C-
+12V
GND
18
TPA3255EVM
Figure
6,
Figure
C18
22pF
C20
R7
R8
10.0k
10.0k
10µF
J10
1
+12V-OA
2
3
GND
VMID
U5A
2
1
3
NE5532ADR
GND
C71
10µF
2
1
SPKA-OUT
PVDD
INA-EXT
4
3
R67
0
INB-EXT
DNP
DNP
6
5
3.3V
+12V
8
7
10
9
AUDIO
12
11
14
13
INTERFACE
16
15
18
17
BOARD
20
19
22
21
24
23
26
25
28
27
SPKC-OUT
INC-EXT
IND-EXT
J28
GND
GND
C57
22pF
C62
R20
R21
10.0k
10.0k
10µF
+12V-OA
VMID
U6A
2
1
J12
3
1
NE5532ADR
2
3
GND
GND
C66
10µF
+12V-OA
L6
10uH
0.8A
C51
C81
C16
C15
C53
10µF
10µF
10µF
0.1uF
0.1uF
GND
GND
GND
GND
GND
Figure 6. TPA3255EVM Schematic 1
Copyright © 2016, Texas Instruments Incorporated
7, and
Figure
8.
R4
0
C23
22pF
R41
10.0k
R42
U5B
6
R12
7
10.0k
5
0
VMID
NE5532ADR
J4
1
SE
2
3
DIFF
AIB
ALIGNMENT
HEADER
J30
GND
INC-EXT
IND-EXT
R44
0
C65
22pF
R25
10.0k
R27
6
U6B
R46
7
10.0k
5
0
VMID
NE5532ADR
J19
1
SE
2
3
DIFF
VMID
+12V-OA
R37
10.0k
R38
C72
10.0k
C70
10µF
0.1uF
GND
GND
GND
C17
10µF
DNP
R47
DNP
10.0k
DNP
C73
DNP
22pF
DNP
C74
DNP
22pF
DNP
R49
DNP
10.0k
C28
10µF
SPKB-OUT
R63
0
DNP
DNP
SPKA-OUT
R64
0
DNP
DNP
INA-EXT
INB-EXT
PBTL
SELECT
SPKC-OUT
R65
0
DNP
DNP
SPKD-OUT
R66
0
DNP
DNP
J26
INC SEL
1
C55
INA
2
3
INC
10µF
DNP
R50
DNP
10.0k
DNP
C75
DNP
22pF
DNP
C76
DNP
22pF
DNP
R51
DNP
J27
10.0k
IND SEL
1
C63
INB
2
3
IND
10µF
SLOU441 – July 2016
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TO DUT
INA
OUTA
From DUT
OUTB
TO DUT
INB
3.3V
J7
1
R36
2
3
10.0k
INC
GND
3.3V
J8
1
R52
2
3
10.0k
IND
GND
TO DUT
INC
OUTC
From DUT
OUTD
TO DUT
IND
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