LG GB210 - Page 94

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7. CIRCUIT DIAGRAM
LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5
A
2
10
IN CASE OF GSM850 /PCS1900
A
E
B
CHANGE THIS MODULE
TO PART_NO SKY77517
H
L
VLOGIC
D
9
5dB
BS
4dB
MODE
L
GSM 900 RX
L
H
H
H
7
6
H
2
IN CASE OF GSM850 /PCS1900
1
H
TX_EN
GSM 900 TX
1 4
L
4
H
D
LGIC(42)-A-5505-10:01
H
5 7
A
C
3
CHANGE THIS DUAL SAW FILTER
C
863
DCS1800 RX
DCS1800 TX
TO PART_NO SFSB0001301
4
C524
56p
DSX321G-26M
X500
26MHz
12
3
220
R502
OUT500
R505
30
C522
R504
180
39p
0R507
0.1u
C516
3pC513
12
13
VDD
15
VLDO1
VLDO2
16
9
VLDO3
56p
C525
RX1900B
RX850
32
31
RX850B
RX900
30
29
RX900B
SCLK
6 5
SDATA
7
SEN
11
TXOP_HI
TXOP_LO
10
18
VAFC_NC
VBAT
14
VCC_BBI
4
24
VCC_BBQ
1
VCC_FE
VCC_REF
17
VCC_TXVCO
EUSY0280101
AD6548
U501
GND
33
I
2 3
IB NC
8
Q
23 22
QB
20
REFIN
REFINB
19
REF_OP
21
RX1800
28
27
RX1800B
RX1900
26
25
R500
68
0.1u
C509
C508
0.1u
18nH
L506
0.1u
C510
0.01u
C507
17
7
GSM_RX
NC
18
21
PGND
TX_EN
4
1
VBATT
VLOGIC
2 3
VRAMP
C502
56p
11
ANT
5
BS
DCS_IN
19
6
DCS_RX
GND1
8
9
GND2
10
GND3
GND4
12 13
GND5
14
GND6
15
GND7
GND8
16
GND9
20
GSM_IN
C518
0.1u
SKY77518
U500
C517
27p
27p
C521
FL500
B9308
G1
2
G2
3
G3
5
G4
10
1
I1
4
I2
O1_1
9
8
O1_2
7
O2_1
O2_2
6
KMS-507
SW500
ANT
G1 G2
RF
1nH
C504
L502
NA
L503
4.7nH
OUT501
68p
C501
0.1u
C514
2V75_VVCXO
C523
56p
VBAT
C505
DNI
2V8_VMEM
NA
L504
24
R501
R503
220
180
R506
C506
10u
0.1u
OUT502
C515
56p
VBAT
C512
56p
C500
C511
C526
DNI
56p
NA
L500
C520 3p
220n
56p
C519
C503
L501
NA
5.6nH
L505
10K
R508
26MHz_BT
26M_DBB
AFC
ANT_SW
PA_BAND
PA_EN
TX_RAMP
S_EN
S_CLK
IN
QN
QP
IP
S_DATA