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7. CIRCUIT DIAGRAM
1
2
VBAT
A
C100
C101
C102
10u
0.1u
1000p
U102
1
WTX_BAND_1_EN
VENB
2
BIAS_CTRL
VCTRL
3
WTX_BAND_1_TO_PA
RFIN
4
C115
C116
VBIAS
1000p
1000p
B
VCC_WPA
WTX_BAND_2_EN
WTX_BAND_2_TO_PA
BIAS_CTRL
C133
DNI
WTX_BAND_8_5_TO_PA
C134
100p
R116
DNI
WTX_BAND_8_5_EN
C
VBAT
C148
C149
C150
10u
0.1u
1000p
C157
C158
BIAS_CTRL
1000p
1000p
D
VDDA_2V8
VRAD_2V8
U108
1
5
_OE
VCC
2
TX_ADC_STRB
A
3 GND
4
Y
SN74LVC1G125DRLR
E
TX_ADC_STRB_2V8
WRX_Q_N
WRX_Q_P
WRX_I_N
WRX_I_P
AMP_FREQ_LSB
DATA_STR
QDATA_AMP_MSB
IDATA_FREQ_MSB
F
RF_CTRL_STR_1
RF_CTRL_DATA
RF_CTRL_CLK
TESTOUT
MCLKREQ
MCLK
R144
0
TN4-26562
26MHz
2 GND1
HOT1
1
3
HOT2
GND2
4
G
X100
R157
0
MCLKSEC
VDIGRAD_1V8
H
WTX_I_P
WTX_I_N
WTX_Q_P
WTX_Q_N
1
2
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3
4
5
VDDA_2V8
VRAD_2V8
SKY77182
9
PGND
8
GND2
C110
C111
0.1u
22p
7
GND1
L100
6
RFOUT
18p
5
VCC
C118
NA
C117
NA
U103 LDC151G8620Q-359
VBAT
1
4
OUT
TER
2
3
IN
COU
U105
SKY77175
1
15
VEN_BAND_2
PGND
L101
2
14
IN_BAND_2
GND4
1.8nH
3
13
GND1
OUT_BAND_2
4
12
VCC1
GND3
5
11
VCONT
VC2
6
10
U104
LDC151G8620Q-359
IN_BAND_5
VBIAS
1
4
OUT
TER
9
OUT_BAND_5
2
3
IN
COU
7
8
VEN_BAND_5
GND2
U107
SKY77181
U106 LDC15874M19Q-360
1
8
1
4
VBIAS
VCC
OUT
TER
C147 22p
2
7
C146
100p
2
3
RF_IN
RF_OUT
IN
COU
3
6
VCONT
GND2
5
GND1
L103
4
9
VEN
PGND
C153
C154
C155
C156
8.2nH
1000p
0.1u
10u
DNI
WCDMA PA Block
R123
560
R124
390
FB100
1800
closed to RF3300
VRAD_2V8
R129
27
R130
0
VDDA_2V8
GTX_1800_1900
R134
27
GTX_850_900
1
WRXQN
2
51
WRXQP
VCCA2
27
VCCA1
3
WRXIN
4
56
WRXIP
ETXHB
54
ETXLB
6
EDATAC
7
52
EDATASTR
EAMMOD
GTX_VAM
8
EDATAA
9
50
EDATAB
ERXHB2
48
ERXHB1
10
STR
46
ERXLB2
11
44
U111
DATA
ERXLB1
RF3300
12
42
CLK
WRXHB2
38
WRXHB1
13
TESTOUT
14
40
560
R143
CLKREQ
WRXLB
15
39nH L116
MCLK
37
RFCTRL1
DNI
WDCDC_EN
C180
17
36
XON
RFCTRL2
DNI
18
R145
XOP
20
35
MCLKSEC
WTXLB
21
VCCD
FL105
31
SAFEB897MAM0F00
WTXHB3
R151
R152
0
23
33
1
4
WTXLP
WTXHB2
IN
OUT
24
29
WTXIN
WTXHB1
0
25
G1
G2 G3
WTXQP
26
57
2
3
5
WTXQN
PGND
FL106
SAFEB1G95KA0F00
3
R161
G3
0
1
4
R162
IN
OUT
G1
G2
0
2
5
RF TRANCEIVER
FL107
SAFEA1G88KB7F00
3
R165
1
G3
4
R166
0
IN
OUT
G1
G2
0
2
5
3
4
5
6
7
8
U100
LMV221
R102
1
6
VDD
OUT
WPOW_DET
1K
R103
2
5
RF_IN
REF
C106
120
33nF
3
4
GND
EN
WPOW_DET_EN
7
5
GND4
GND3
8
4
GND5
GND2
9
2
GND6
GND1
C119 100p
3
TX
1
6
RX
ANT
WRF_BAND_1
GTX_850_900
FL100
SAYFP1G95AA0B00
GTX_1800_1900
3.6nH
C124
R111
0
ANTSW2
R112
0
ANTSW1
WRX_BAND_1
GND4
GND3
GND5
GND2
GND6
GND1
R114
C135
100p
ANTSW0
R115
TX
ANTSW3
RX
ANT
WRF_BAND_2
FL101
ACMD-7407
C143
0.5p
WRX_BAND_2
GND4
GND3
GND5
GND2
GND6
GND1
C145
100p
TX
R652
RX
ANT
WRF_BAND_8_5
0
FL102
LT56B
6.8nH
C152
WRX_BAND_8_5
C159
3.9p
4.3nH
R125
GRX_1900
FL103
L104
L105
GND6
GND5
3.3nH
10
5
NA
GND4
GND3
8
3
GND2
GND1
7
2
OUT_1960
IN_1960
6
4
3.9nH
C164
15p
R128
OUT_1842_5
IN_1842_5
GRX_1800
9
1
SAWEN1G84BC0F25
L106
L107
2.2nH
NA
0
R133
GRX_900
FL104
C172
3.3p
L109
GND6
GND5
10
5
NA
GND4
GND3
L110
L111
8
3
GND2
GND1
8.2nH
NA
7
2
OUT_942_5
IN_942_5
6
4
0
R140
OUT_881_5
IN_881_5
GRX_850
9
1
C177
3.3p
SAWEN881MBA0F25
L112
NA
L113
L114
10nH
NA
C178
33p
R142
18p
WRX_BAND_1
ADOUT
L115
C179
TX_ADC_STRB_2V8
5.6nH
10nH
RTEMP
WRX_BAND_2
WTX_BAND_8_5_TO_PA
L117
2.2nH
TEMP SENSOR
L118
10nH
WRX_BAND_8_5
NA
WTX_BAND_1_TO_PA
L119
L120
1.8p
WTX_BAND_2_TO_PA
6
7
8
- 179 -
9
10
11
12
VBAT
GND13
VBATT
30
5
R105
0
GND12
VAPC
GTX_VAM
29
4
GND11
28
C112
22p
GND10
WCDMA3
WRF_BAND_2
27
20
C113
33p
GND9
WCDMA2
WRF_BAND_8_5
26
19
C114
22p
GND8
WCDMA1
WRF_BAND_1
25
18
GND7
24
GND6
RX1
GRX_850
U101
23
16
GND5
RX2
GRX_900
22
15
GND4
RX3
GRX_1800
21
14
GND3
RX4
GRX_1900
12
13
GND2
11
R108
DNI
SW100
GND1
RSVD
2
10
KMS-518
LB_RF_IN
MODE
3
9
SW101
HB_RF_IN
1
UFL-R-SMT10
_TXEN
8
L102
100p
BS2
G1
C125
22p
6
BS1
ANT
ANT
G2
7
17
SKY77521
0
0
GSM PA WITH ASM
GT500 GND contact for ANT
SC1
1
10
CN198
2
11
1
3
12
4
13
5
14
6
15
CN199
7
16
1
8
17
9
18
VBAT
C168
10u
U109
LM3208TL
L108
3.3uH
B1
A2
C171
VDD
SW
A1
PVIN
0.01u
C3
FB
C2
DCDC_REF
VCON
C173
C174
C175
B3
SGND
4.7u
1000p
22p
R135
C1
A3
WDCDC_EN
EN
PGND
220
C176
22p
Placement Notice:PGND must be isolated from Common GND on L1, L2 and L3
DC-DC CONVERTER
VBAT
VRAD_2V8
CE
GND
R147
3
2
VDD
VOUT
4
1
0
C182
RP101K282D
U110
C183
1u
2.2u
R156
VDDA_2V8
0
R160
EXT_LDO
DNI
EXTERNAL LDO
9
10
11
12
A
B
C
D
E
VCC_WPA
F
G
H
LGE Internal Use Only
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