Advertisement
SCHEMATIC DIAGRAM-16
USB CIRCUIT
WH301
TO
USB+5V
1
L122
MAIN CIRCUIT
D.GND
2
L123
(CN301) ON
USB Rch
3
L124
SCHEMATIC
A.GND
4
DIAGRAM-8
USB Lch
5
28
1
R134
39
R124
1M
R125
1K
X120
C122
C121
27P
27P
D121
1SS355TE17
L121
R133
C139
16V22
6.8K
R141
47K
C138
R132
L125
16V22
6.8K
R140
47K
D
5V
1.7V
5V
5V
2.5V
27
26
25
24
23
1.2V
3.4V
P-P
P-P
2
3
4
5
6
R120
R121
1.5K
22
C120
C100
6.3V100
0.1
: +B SIGNAL LINE
5V
C137
R129
16V22
C131
330P
C133
0.1
5.1V
2.5V
8
7
1
2
2.5V
2.5V
C136
C132
R130
16V22
330P
3.9K
R131
12K
C130
1800P
C
B
C128
C127
16V10
16V10
5V
2.5V
2.5V
22
21
20
19
18
IC120
C1BB00000616
USB DAC
7
8
9
10
11
C140
0.1
12K
R128
R126
3.9K
12K
C129
2.5V
2.5V
1800P
6
5
IC121
NJM2115V-TE1
BUFFER AMP
3
4
2.5V
R127
12K
A
5V
17
16
15
12
13
14
R123
22
R122
22
1
3
R144
1
A
B
C
D
JK120
2
USB
4
Advertisement
