LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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4.3.1 Checking WCDMA TX Block
WCDMA 850 Tx Path
WCDMA 2100 Tx Pat
0.5p
C1106
51
R1025
10u
C1075
L1034
1nH
C1103
2.2nH
R1024
82
33p
C1074
R1023
82
C1077
DNI
C1086
8.2nH
VREG_W_PA
0.5p
R1019
L1025
100K
L1026
5.6nH
15p
C1102
C1099
DNI
L1020
1.5nH
VMODE_PCS
24
VREG_CELL
3
1
VREG_PCS
0.1u
C1082
18
NC7
PGND
25
5
RFIN_CELL
2
RFIN_PCS
RFOUT_CELL
14
RFOUT_PCS
16
6
VCC1_CELL
VCC1_PCS
22
VCC2_CELL1
9
10
VCC2_CELL2
11
VCC2_CELL3
21
VCC2_PCS1
20
VCC2_PCS2
VCC2_PCS3
19
23
VCC_BIAS
VMODE_CELL
4
RF5184
U1003
NC1
7
8
NC2
NC3
12
13
NC4
15
NC5
17
NC6
VREG_RF_2.85V
L1027
NA
82
R1022
2200p
C1087
4
SCDY0003901
LDC15836M20Q-360
U1002
COU
3
IN
2
OUT
1
TER
C1092
4.7nH
L1016
33p
S3
+VPWR
SI8407DB-T2-E1
D1
D2
G
S1
S2
Q1000
R1020
1K
TX
FL1005
B7646
ANT
GND1
GND2
GND3
GND4
GND5
GND6
RX
C1084
5.6p
2200p
C1110
2.2nH
L1036
1.5nH
L1028
ANT
GND1
GND2
GND3
GND4
GND5
RX1
RX2
TX
FL1004
B7683
L1032
1.5p
SCDY0003801
LDC151G8820Q-359
U1004
COU
3
IN
2
OUT
1
TER
4
4.7u
C1101
1.5nH
L1024
1nH
L1029
56p
C1083
2200p
C1100
C1109
33p
15p
C1108
C1105
2200p
PA_FET_N
RX_WCDMA_850_P
RX_WCDMA_850_M
PWR_DET
PDET_IN
PWR_DET
RX_W_2100
WCDMA 850 Tx Path
WCDMA 2100 Tx Path
[Fig.] the schematic of WCDMA Block
[Fig.] Test Point of WCDMA TX Path Block
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