Circuit Diagram - LG KU800 Service Manual

7. CIRCUIT DIAGRAM

1 2 3
R1000
NA
SW1000
C1000 33p
L1030
G2
ANT RF
G1
0
1.2p
KMS-506
A L1031
C1001
L1000
12nH
NA
U1000
19
VREG_RFRX_0_2.85V
VDD GSM850_RX1
GSM850_RX2
18
ANT_SEL0 CTRL1 GSM900_RX1
22
ANT_SEL1 CTRL2 GSM900_RX2
GSM1800_RX1
GSM1800_RX2
10
B GND1 GSM1900_RX1
12
GND2 GSM1900_RX2
13
smd_0603h_3_r smd_0603h_3_r GND3 WCDMA2100
15
GND4
C1004 C1005 17
C1007 C1008 GND5 DGM085M01
20
10p 0.1u GND6
100p 100p
21
smd_0603h_3_r smd_0603h_3_r GND7 GSM850900_TX
23
GND8 GSM18001900_TX
C
L1011
4.7nH
L1013
3.3nH
D
14
L1016 L1017
NA 4.7nH 11
E
GSM/DCS/PCS
WCDMA +VPWR
C1047 C1048 C1049
22u 10n 100p
11
10
F
C1063
C
2p
2.2nH
L1025
C1065
NA
C1072
120p
CP0402A1880EL
D IN COUP
2 3
R1027
OUT 50OHM
62
1 4
U1004
ADL5500 U1006
VOPS VRMS
RFIN COMM
HDET
G1
E G2
ANT G3
G4
G5
G6
G7
L1028 1.8nH
F
1 2
LG(42)-A-5505-10:01
4 5
ANT1001
ANT1002 ANT1003
ANT_SEL0 ANT_SEL1 GSM_PA_BAND
GSM 900 RX HIGH LOW LOW
GSM 900 TX/WCDMA LOW HIGH HIGH
DCS1800/PCS1900 TX HIGH HIGH
DCS1800/PCS1900 RX LOW LOW
7
8
5
6
1
2
3
4
9
16
14
+VPWR
C1017 C1015
33p 47u
1
DCS_PCS_OUT DCS_PCS_IN
2
GSM_PA_BAND
GND5 BS
3
GND4 TX_EN GSM_PA_EN
VCC VBATT C1029 C1030
R1012
2.2n 2.2n
smd_0603h_3_r smd_0603h_3_r 15
GND3 GND1 R1013
U1002
GND2 TQM7M5003 VRAMP 15
8 7
GSM_OUT GSM_IN C1034
1.5p
R1019
GSM_PA_RAMP
2.2K
R1022
C1041
82p
47
AWT6277R U1003
GND5
1
VCC2 VCC1
9 2
GND4 RFIN
8 3
RFOUT GND1 R1024 220
7 4
GND3 VMODE PA_R1
6 5
GND2 VREF
C1058
smd_0603h_3_r
10n
C1060
smd_0603h_3_r
10n
VREG_RFRX_0_2.85V
Q2_E Q2_C
C1068
4 3
100p
Q2_B
smd_0603h_3_r
5
Q1_B PA_ON
2
C1073 C1074
Q1_C Q1_E 0.1u 100p
6 1
smd_0603h_3_r smd_0603h_3_r
Q1000
R1026
VREG_RFTX_2.85V
0
HDET1 ILNA_OUT
C1076
10n
smd_0603h_3_r
L1029 2.7nH
C1081
1.8p
10
VREG_TCXO_2.85V
R1032
C1083 C1084
4.7u 100p
smd_0603h_3_r
4 5 6 7
MODE
TX_VCO_EN_0_N TX_VCO_EN_1_N
GSM
GSM900 HIGH LOW
DCS/PCS
DCS1800/PCS1900 LOW HIGH
OFF HIGH HIGH
L1001
2.7nH
L1003
1930-1990 MHz 3.3nH
L1007
2.7nH
VREG_RFTX_2.85V
L1009
3.9nH R1003 R1004
(1%)
4.7K 4.3K
ECHU1C682JX5
C1014
680p
1805-1880 MHz C1011 6.8n smd_0603h_3_r
(PPS)
C1016
10n
L1012
CP2_OUT
3.9nH
RX_VCO_IN
R1006
11.3K (1%)
925-960 MHz
R1008
R1007 15
(1%) 0
C1020 R1011 33 C1021
120p 330p
C1024 C1025
82p
FB1000 (PPS)
5.6n
VREG_RFTX_2.85V
C1028
smd_0603h_3_r
10u VREG_MSMP_2.7V
C1031
R1014 100
33p
R1015 100
VB SW2 GSM_TX_VCO_0_EN_N
R1016 100
3 8
SW1 GSM_TX_VCO_1_EN_N
10
OUT2
1
OUT1 VC VREG_RFTX_2.85V
5 9 smd_0603h_3_r smd_0603h_3_r
MQW6V0C869M X1000
C1042 C1043 C1044
C1036
10u
33p RF_ON_TX_ON
0.1u 100p
smd_0603h_3_r
FL1000
EFCH1950TDC1 3
2.7nH
G3
4 1
OUT IN
G2 G1
L1020
5 2
FL1001
0.5p
2
C1053 C1054 1.5nH
1
ILNA_OUT IN
6.8p L1021 B7827
5
L1024
2.2nH
IMT_RX_P
IMT_RX_M
VREG_TCXO_2.85V
C1066 C1067
0.1u 100p
C1071
smd_0603h_3_r smd_0603h_3_r C1069 C1070
0.1u
100p 10p
smd_0603h_3_r smd_0603h_3_r smd_0603h_3_r
13 49
PLNA_OUT PGND
14 48
ILNA_OUT GLNA_BIAS
15 47
PLNA_BIAS GLNA_IN
16 46 R1028
PLNA_IN R_BIAS
17 45 11.3K
ILNA_BIAS VDDA8
18 44
ILNA_IN SBST SBST
19 43
RFR6250E
VDDRF3 SBDT SBDT
20 42 smd_0603h_25_r
RX_IP SBCK SBCK
U1005 R1030
21 41
RX_IM VDDM VREG_MSMP_2.7V
22 40
RX_QP GRX_IP 100
23 39
RX_QM GRX_IM C1078
24 38
VDDA2 GRX_QP 10n
37
smd_0603h_3_r
GRX_QM
10
RX_QM VREG_TCXO_2.85V
R1031
smd_0603h_3_r
RX_QP
C1080 C1079
100p 4.7u
VREG_TCXO_2.85V
RX_IM
C1082
RX_IP 100p
smd_0603h_3_r
smd_0603h_3_r
3p
RX_VCO_IN
C1085
8 9
- 151 -
14 15
DAC_REF
TX_IM
C1003
47p
TX_IP
TX_QM
C1006
47p
TX_QP
smd_0603h_3_r C1009
33p
smd_0603h_3_r VREG_SYNTH_2.85V
C1010
33p
C1012 C1013
33p 220n
smd_0603h_3_r
CP_HOLD2 RX_IN RX_IM
29 14
CP2 RX_IP RX_IP
30 13
VDDA9 RX_QN RX_QM
31 12
RX_VCO_IN RX_QP RX_QP
32 11
R_BIAS VDDA4
33 10
GSM1800_INN VCO_TUNE C1018 C1019
34 9
GSM1800_INP RTR6250D VTUNE_REF 2.2u 47p
35 8
smd_0603h_3_r
VDDA10 U1001 VDDA3
36 7
GSM900_INP TCXO
37 6 R1010
GSM900_INN VDDA2
38 5
VDDA11 VDDA1 6.2K
39 4 R1009 3.3K
TX_MOD_CP FAQ1 (1%)
40 3 (1%)
VDDA12 CP1
41 2
TX_VCO_FB CP_HOLD1 C1022 C1023
42 1
VREG_RFTX_2.85V
3.9n 390p
C1026 (PPS)
0.01u C1027
100p
smd_0603h_3_r
C1033
10n
smd_0603h_3_r
C1035 VREG_RFTX_2.85V
33p
smd_0603h_3_r
C1039 C1040
33p 100p
smd_0603h_3_r smd_0603h_3_r
R1023
TX_AGC_ADJ
C1046 1K
C1045
4700p smd_0603h_25_r
100p
smd_0603h_3_r
smd_0603h_3_r
C1051
IMT_RX_P 1000p
C1050
L1019
15p VREG_TCXO_2.85V
1nH
smd_0603h_3_r
3
C1055 0.1u C1056 C1057
G1 O1
2.2n 0.1u
G2 O2 smd_0603h_3_r
smd_0603h_3_r
4
L1022
1nH 19.2MHz
IMT_RX_M
VCC GND smd_0603h_25_r
4 2
C1059 X1001
R1025
15p
OUT VCONT
3 1
100
TG-5001LA-19.2MHz
smd_0603h_3_r C1061
C1062 10n
1000p smd_0603h_3_r
smd_0603h_3_r
C1064 100p
SC1000
1
KU311
Section Date Sign & Name
05/11
KU800
S.M.KIM MODEL
Designer
2006
Checked
DRAWING
RF
Approved
DRAWING REV 1.1
LG Electronics Inc.
NO.
16
A
B
C
D
E
F
TRK_LO_ADJ
C
TCXO_PM
TCXO_BT_IN
D
E
Sheet/
Sheets
1/5
LG Electronics Inc.