Table of Contents
Advertisement
7. CIRCUIT DIAGRAM
1
2
OUT500
OUT501
OUT503
A
R500
R501
0
0
L601
2.2nH
C707
3.9p
L602
10nH
B
SW500
KMS-507
L502
IN CASE OF GSM850 /PCS1900
CHANGE THIS MODULE
NA
TO PART_NO SKY77517
L506
1nH
L503
NA
C
MODE
VLOGIC
TX_EN
L
GSM 900 RX
H
D
H
L
DCS1800 RX
H
H
GSM 900 TX
H
H
DCS1800 TX
E
1
2
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3
4
5
R503
68
C500
C501
C502
C503
56p
68p
56p
56p
VBAT
C508
C510
10u
0.01u
6
1
DCS_RX
VBATT
7
20
GSM_RX
U501
GND9
8
19
GND1
DCS_IN
9
18
GND2
NC
SKY77518
10
17
GND3
GSM_IN
11
16
ANT
GND8
C515
56p
FL500
B9308
L504
1
9
5.1nH
I1
O1_1
C516
56p
8
O1_2
7
O2_1
C517
3p
4
6
I2
O2_2
L505
2
3
5 10
18nH
C524
3p
BS
L
IN CASE OF GSM850 /PCS1900
H
CHANGE THIS DUAL SAW FILTER
TO PART_NO SFSB0001301
L
H
3
4
5
6
7
PA_BAND
PA_EN
TX_RAMP
ANT_SW
4dB
R506
24
R507
R508
220
220
R510
30
R509
R511
QP
180
180
5dB
C507
DNI
QN
X500
2V75_VVCXO
C512
0.1u
3
4
2
1
C513
0.1u
26MHz
DSX321G-26M
C514
0.1u
RX1900B
25
RX1900
VLDO2
26
16
RX1800B
VLDO1
U502
27
15
RX1800
VBAT
28
14
RX900B
AD6548
VDD
29
13
RX900
VCC_TXVCO
30
12
RX850B
EUSY0280101
TXOP_HI
31
11
RX850
TXOP_LO
32
10
VLDO3
9
GND
33
C520
C521
0.1u
C525
C526
27p
39p
IP
C530
DNI
IN
- 95 -
8
9
10
2V75_VVCXO
C505
DNI
N.M
5
R706
0
2
VCC
4
26MHz_BT
GND
U500
R514
3
AFC
MC74VHC1G04DFT2G
10K
R515
0
26M
2V8_VMEM
VBAT
C518
C519
0.1u
0.1u
C522
C523
27p
0.1u
220n
S_EN
S_CLK
S_DATA
C527
C528
C529
56p
56p
56p
LGE Internal Use Only
A
B
C
D
Advertisement
Table of Contents
