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7. CIRCUIT DIAGRAM
1
2
ANT500
ANT501
C500
1.5p
L507
3.3nH
C905
NA
A
SW500
KMS-505
C508
33p
U504
8
ANT
4
GND1
6
5
GND2
EGSM_TX
7
3
GND3
DCS_TX
B
9
GND4
12
GND5
13
10
GND6
EGSM_RX
14
1
GND7
DCS_RX
11 2
SHS-C090DR
ANT_SW1
ANT_SW2
GSM_TX
H
L
L
H
DCS_TX
RX
L
L
C
ANT_SW2
C639
27p
ANT_SW1
C642
D
27p
E
1
2
LGIC(42)-A-5505-10:01
3
4
5
ANT502
ANT503
ANT504
C502
C599
C503
C504
C505
C506
27p
18p
10p
0.01u
0.01u
0.01u
RSVD
15
C510
PAC_ENABLE
SKY77325
33p
GSM_OUT
U501
GSM_IN
12
DCS_PCS_OUT
DCS_PCS_IN
17
C637
C648
C649
C650
22p
NA
0.5p
NA
R509 1K
C638
39p
L503
L504
0
0
C523
1p
2
3
L509
1
G1
O1
IN
G2
O2
27nH
5
4
FL502
C525
1p
EFCH942MTCA7
C527
1p
2
3
L505
G1
O1
1
IN
6.8nH
G2
O2
C526
C640
FL503
5
4
NA
NA
C529
1p
EFCH1842TCA7
GPO_11
GPO_9
C536
Iss.
3
4
5
6
7
8
VBAT
R501
100
C501
27p
C507
22uF
R502
100
C509
27p
RF2.85V
RF2.85V
BS
4
C636
C514
2
33p
100p
R503
6
47
R504
R505
130
130
5
C635
27p
R506
36
R507
R508
150
150
TX_RAMP
21
RFIGN
20
RFIGP
19
1
RFIDN
RXQN
18
2
RFIDP
U505
RXIP
17
3
RFIPN
RXIN
16
4
SI4205
RFIPP
TXIP
15
5
GND1
TXIN
36
6
GND8
TXQP
35
7
GND7
TXQN
34
GND6
33
GND5
RF2.85V
C531
1u
RF_LDO
VBAT
RF2.85V
U503
5
1
OUT
IN
2
GND
4
3
BYP
EN
CLKON
C535
C537
0.022u
MIC5255-2.85BM5
10u
4.7u
(1608)
(1608)
Section
Date
Designer
Checked
Approved
Notice No.
Date
Name
LG Electronics Inc.
- 101 -
9
10
PA_BAND
GPO_17
PA_EN
GPO_16
C515
C998
22p
0.1u
26MHz_A
C516
1000p
26MHz_C
QP
C590
39p
QN
IP
C591
39p
IN
C530
22p
2V75_VVCXO
X502
R512
3
1
OUT
VCONT
AFC
(AD6535_AFCDAC)
10K
4
2
VCC
GND
C533
C540
0.01u
C534
26MHz
7p
2.2u
(1608)
R1111
51
RF_PWR_DWN
(GPO_4)
R1110
51
S_EN
(GPO_19)
R1109
51
S_CLK
(GPO_21)
R1108
51
S_DATA
(GPO_20)
C654
C653
C652
C651
27p
27p
27p
27p
Sign & Name
Sheet/Sheets
F2400
MODEL
DRAWING
RF
NAME
DRAWING
Ver.1.0
NO.
A
B
C
D
5/6
LG Electronics Inc.
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