Circuit Diagram - LG L601i Service Manual

7. CIRCUIT DIAGRAM

1 2 3 4
ANT101 ANT102 VREG_RFRX_0_2.85V
ANT100
U100
3 4
OUT2 VCONT
2 5
GND IN
56p SW100
0
G2 1 6 R100
A ANT RF OUT1 VDD
R643 C100 G1
56p C102 10K
KMS-507 UPG2010TB-E3
NA
C104
C101
NA RF_OUT
FL508
LMSP54MA-543
14
VC1
15
VC2
16
VC3
13
VDD
1
B GND1
2
GND2
4
ANT_SEL0
GND3
5
ANT_SEL1
GND4
8
ANT_SEL2
GND5
10
GND6
12
GND7
17
GND8
18
GND9
C L114 15nH
VREG_RFRX_0_2.85V
C122
33p C117 C118
33p 33p
R108 R109
1.8nH 0
D
C603
NA
C604
NA
E
GSM/DCS/PCS
WCDMA
F
AWT6277R
11
GND5
10
VCC2
9
2.2p GND4
8
RFOUT
7
R637 GND3
6
GND2
NA C171
C168 NA
C IN COUP
2 3
HDET
OUT 50OHM
1 4
C609 NA
U106 LMV225TLX
R132 1K C186 100p
A1
RFIN_EN
B1
GND
R642 R133
PA_ON
0
C608 1.2p
10K
D
TX
ANT
8
RX
FL509
SAYDT1G95AF0B00R05
ILNA_OUT
L130
C191 12p L131 1.2nH
E
C192
L505
1.2p
27nH
VREG_RFRX_1_2.85V
C196
F 0.1u
1 2 4
LG(42)-A-5505-10:01
5
ANT_SEL2 ANT_SEL1 ANT_SEL0 GSM_PA_BAND MODE
TX_VCO_EN_0_N
GSM 900 TX LOW HIGH HIGH LOW GSM
GSM900
DCS/PCS
AC_T_N DCS1800/PCS1900 TX LOW LOW HIGH HIGH
GSM900 RX HIGH LOW LOW DCS1800/PCS1900
DCS 1800 RX HIGH HIGH LOW
OFF
PCS 1900 RX LOW HIGH LOW
L504
WCDMA HIGH HIGH HIGH
C106 NA
33p
11
19
GSM900_RX1
20
GSM900_RX2
21
GSM1800_RX1
22
GSM1800_RX2
23
GSM1900_RX1
24
GSM1900_RX2
3
GSM1800_1900TX
6
GSM900TX
7
UMTS2
9
UMTS1
25
PIN_DIREC1
26
PIN_DIREC2
+VPWR
C120
C125 925-960 MHz
0.01u 22u
L118 12nH
L119
15nH
C128
C129 0.01u
68p C131
1000p
L121
15nH
L122 12nH
R114
15 3
DCS_PCS_OUT DCS_PCS_IN
27 R115
11 4
U102
GSM_OUT GSM_IN
15
18
GSM_PA_EN
SKY77328 ENABLE
19 1
GSM_PA_BAND
RSVD_GND BS
R123
51
+VPWR
U606
C164
Close to Pin 1 Close to pin 10 R126
1 FL102 3
3.3nH 47p
VCC1
2 4 G3 1
RFIN OUT IN
3
G2 G1
GND1 R128
4 EFCH1950TDC1 5 2
PA_R0
VMODE NA
5 C169
0
VREF NA L126
TR100
KRX102E
PA_ON VREG_TCXO_RFR
C174
0.01u
VREG_RFTX_2.85V
IMT_RX_P
IMT_RX_M
A2
VREG_RFTX_2.85V
VDD
B2
HDET1
OUT
C188 C189
1200p 27p
13 49
PLNA_OUT PGND
14 48
ILNA_OUT GLNA_BIAS
15 47
PLNA_BIAS GLNA_IN
16 46 R137
100nH
PLNA_IN R_BIAS
17 45
11.3K
ILNA_BIAS VDDA8 (1%)
18 44
ILNA_IN SBST
19 43
RFR6250E
VDDRF3 SBDT
20 42
RX_IP U107 SBCK
21 41
RX_IM VDDM
22 40
C193 RX_QP GRX_IP
23 39
680p RX_QM GRX_IM
24 38
VDDA2 GRX_QP
37
GRX_QM
RX_QM
C197 R139
RX_QP
10p
0 R140 C198
RX_IM 3300
C199 (PPS) 0.01u
C80 3.9n
RX_IP
C81 C82 470p
0.1u 100p
5 6 7 8
TX_VCO_EN_1_N
HIGH LOW
LOW HIGH
HIGH HIGH
L101 1nH
1930-1990 MHz
L102
2.2nH
L506
NA
C109
L106 1000p
2.2nH
L109 1nH
VREG_RFTX_2.85V
C110
33p
L110 5.6nH
VREG_RFTX_2.85V
1805-1880 MHz
L112
18nH
C121 CP_HOLD2
29
1000p CP2
L115 30
VDDA9
18nH 31
L120 5.6nH RX_VCO_IN
R105 32
R_BIAS
11.3K (1%) 33
GSM1800_INN
34
GSM1800_INP
35
VDDA10
36
GSM900_INP
37
GSM900_INN
38
VDDA11
R110 82 39
TX_MOD_CP
40
C132 C133 VDDA12
R113 41
120p 1000p TX_VCO_FB
47 42
(PPS)
C138 C139
22n 82p
MQW5V0C869M U103 FB100
10 3
VREG_RFTX_2.85V
VC VB
R116 100ohm
1 9
GSM_TX_VCO_0_EN_N
OUT_GSM SW1
5 11 R117 100ohm
GSM_TX_VCO_1_EN_N
OUT_DCSPCS SW2
R118
8 2
GND5 GND1 VREG_MSMP_2.7V
12 4
GND6 GND2 51 C150
13 6
GND7 GND3 0.1uF
14 7
GND8 GND4
VREG_RFTX_2.85V
C152 C153 C154
RF_ON_TX_ON
10u 33p 100p
C158 22p
FL101
2 3
C162 R125 C163 0.1u
1 G1 O1 L124
ILNA_OUT
L502 IN
G2 O2 27nH
8p 0
B7827 5 4
1.5nH C165 56p
L127
C170 22p
3.9nH
C178 C181 C182 C184 C185
10p 5p 10p 0.1u 100p
10u 0.1u
(VDDA_7_45) (VDDA_24_26_27)
(VDDA_32_34_36)
VREG_TCXO_RFR
SBST
SBDT
SBCK
R138
VREG_MSMP_2.7V
51
Section
C194 C195
10p 1u
Designer
Checked
Approved
9
- 135 -
14 15 16
DAC_REF
TX_IM
2.2uH
L103 C107 47p
TX_IP
2.2uH
L105
TX_QM
2.2uH
L107 C108 47p
TX_QP
2.2uH
L108
R104
VREG_RFTX_2.85V
10
C111
0.1u
47nH
L111
VREG_SYNTH_2.85V
C115 C116
33p 0.1u
VREG_RFTX_2.85V
C119 47nH
RX_IM
RX_IN 0.1u L113
14
RX_IP
RX_IP
13
RX_QM
RX_QN
12 R106
RX_QP
RX_QP 10
11
VDDA4
10
VCO_TUNE C126 C124
9
1.5u
RTR6250D VTUNE_REF 47p
8
U101 VDDA3
7
TCXO
6
R112
VDDA2
5
6.2K
VDDA1
4 R111
FAQ1
3 6.2K
CP1
2 C134
CP_HOLD1 C135
1 3.9n
390p
(PPS)
C140
0.01u
L501
47nH
VREG_RFTX_2.85V
C148 C149
C151 100p 0.1u
1000p
R124
TX_AGC_ADJ
C155 C156 1K
100p 4700p
C159
IMT_RX_P
1000p
L123
VREG_TCXO_2.85V
1.5nH
C166 C167
1000p 0.1u
L125
1.5nH 19.2MHz
IMT_RX_M
VCC GND
4 2
X100
R129
TRK_LO_ADJ
OUT VCONT
3 1
100ohm
TG-5001LA-19.2MHz
C172
C173 0.01u
1000p
4.7
VREG_TCXO_2.85V
R130
C176
C177 100p
10u TCXO_PM
R135
VREG_RFTX_2.85V PA_THERM
80.6K R136
(1%) RT100
(1%) C190
470K 0.068u
68K
Date Sign & Name Sheet/
Sheets
D2
MODEL
06/29/2006
1/6
DRAWING
RF
DRAWING
LG Electronics Inc. Rev_1.0
NO.
A
B
C
D
E
F
C
D
E