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1
2
A
TP502
TP501
TP500
C500
NA
C502
0
C503
1p
B
C543
22p
L550
1.8nH
FL500
ANT
1
GSM_RX1
2
GSM_RX2
LMSP7CHA-158
3
DCS_RX1
14
4
VC2
DCS_RX2
16
5
VC3
PCS_RX1
7
6
C
VC1
PCS_RX2
15
DCS_PCS_TX
17
GSM_TX
GND3
GND1
GND4
GND2
12
13
19
R512
C535
0
270p
D
R515
C537
0
270p
R517
C539
0
270p
ANT SW CONTROL TABLE
VC1
VC2
VC3
EGSM_TX
L
L
H
L
DCS/PCS_TX
H
L
E
EGSM/DCS_RX
L
L
L
PCS_Rx
H
L
L
1
2
LGIC(42)-A-5505-10:01
3
4
5
C505
C506
C507
C508
18p
NA
0.01u
3p
L500
2.7nH
9
DCS_PCS_OUT
C512
C513
BAND_SELECT
26
2.2p
1.8p
GND17
27
GND18
28
GND19
29
GND20
U501
30
GND21
RF3166
31
GND22
32
GND23
C515
6.8nH
8
GSM_OUT
L501
3p
C517
10nH
1.5p
22nH
C524
L506
1.5p
C525
1.5p
L504
C531
6.2nH
1.5p
C540
1.8p
L502
C541
5.6nH
1.8p
C542
ANT_SW3
GPO_10
ANT_SW2
GPO_11
CLKON
R520
4.7K
ANT_SW1
GPO_9
3
4
5
6
7
C501
39p
VBAT
C504
C509
C510
27p
33u
10p
C511
27p
1
DCS_PCS_IN
2
3
TX_ENABLE
R503
4
VBATT
36
R504
R505
5
GND
150
150
[6dB]
6
VRAMP
R506
7
GSM_IN
30
R507
R508
180
180
[5dB]
RF2V85
C523
100p
21
RFIGN
20
RFIGP
19
RFIDN
18
RFIDP
U500
17
RFIPN
SI4205
16
RFIPP
15
GND1
36
GND8
35
GND7
34
GND6
33
GND5
RF2V85
VBAT
U702 MIC5255-2.85BM5
1
5
IN
OUT
2
GND
3
4
EN
BYP
C533
C734
C534
10u
0.01u
10u
(1608)
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
- 105 -
8
9
R500
TX_RAMP
15K
R501
PA_BAND
GPO_17
100
R502
PA_EN
GPO_16
100
RF2V85
C518
C519
0.022u
22p
1
RXQN
2
RXIP
3
RXIN
4
TXIP
5
TXIN
6
TXQP
7
TXQN
RF2V85
2V75_VVCXO
C527
C528
C530
0.022u
22p
1000p
C730
C731
C732
C733
27p
27p
27p
27p
Date
Sign & Name
MODEL
2005
KIM Y.G.
03.20
2005
LEE S.Y.
03.20
DRAWING
NAME
2005
KIM B.Y.
03.20
DRAWING
LG Electronics Inc.
NO.
7. CIRCUIT DIAGRAM
10
A
C532
1000p
13MHZ
QP
C514
39p
QN
IN
B
C516
39p
IP
C
X500
R516
3
1
OUT
VCONT
AFC
C538
15K
4
2
VCC
GND
1000p
C536
13MHz
2.2u
RF_PWR_DWN
GPIO_4
S_CLK
GPO_21
D
S_EN
GPO_19
S_DATA
GPO_20
Sheet/Sheets
B2070
5/5
RF
Ver.1.1
LG Electronics Inc.
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