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GSM PAM Circuit Diagram
GSM PAM Circuit Diagram
W
0
0
S
1
1
2
0
2
7
9
0 -
0
1
E
0 -
1
G
1
C
1
0
0
1
1
G
2
A
N
T
C
1
0
1
1
D
I N
G
S
M
_
P
A
O
U
T
_
L
B
TP3
G
S
M
_
P
A
O
U
T
_
H
B
Table 1
Test Point
Net name
TP5
PA_LEVEL
TP4
TXON_PA
TP6
VBAT
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
S
W
1
0
0
2
G
R
S
3
0
2
2 -
S
H -
2
2
E -
3
0
0
0
C
1
0
0
2
2
2
p
8 .
n
H
G
1
A
N
T
R
F
G
2
C
1
0
0
3
L
1
0
0
1
0
7 .
5
p
TP1
1
8
n
H
TP1
TP2
TP2
C
1
0
5
2
1
2
p
TP3
C
1
0
5
4
C
1
0
5
5
D
I N
3
9
n
H
C
1
0
5
6
3
3 .
p
C
1
0
5
8
C
1
0
5
9
6
8 .
n
H
2
2
n
H
C
1
0
6
0
0
0 .
1
u
Description
Power Amp Gain Control. Typically, 0.2 ~1.6V
Power Amp Enable (ON : >1.25V, OFF : <0.5V)
PAM Supply Voltage (Vcc > 3V)
GM310f service manual
TP6
TP4
TP4
P
G
N
D
G
S
M
8
5
0
_
9
0
0
_
N I
1
5
7
G
N
D
3
T
X
_
E
N
8
6
G
N
D
2
1
1
G
N
D
1
V
R
A
M
P
U
1
0
0
3
1
4
5
B
Y
_
C
A
P
2
V
B
A
T
T
T
Q
M
7
M
5
0
0
5
9
4
B
Y
_
C
A
P
1
B
S
1
3
3
TP5
G
S
M
8
5
0
_
9
0
0
_
O
U
T
M
O
D
E
_
S
E
L
E
C
T
1
0
2
D
C
S
_
P
C
S
_
O
U
T
D
C
S
_
P
C
S
_
N I
1
2
1
TP5
C
1
0
6
1
0
0 .
1
u
- 107 -
5. Trouble shooting
V
B
A
T
TP6
C
1
0
4
4
C
1
0
5
0
C
1
0
5
1
3
3
u
2
7
p
6
p
T
X
O
N
_
P
A
R
1
0
1
4
1
0
K
P
A
_
L
E
V
E
L
2
G
_
B
S
P
A
_
M
O
D
E
C
1
0
6
2
4
7
p
LGE Internal Use Only
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