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8. CIRCUIT DIAGRAM
ANT1
ANT2
ANT3
C401
C460
C461
0
NA
1.5p
R401
5p
C402
GND1
GND2
NA
SW401
KMS-507
C411
22p
C412
FL401
8
0.5p
ANT
4
GND1
6
5
GND2
EGSM_TX
7
3
GND3
DCS_TX
9
C416
GND4
12
2p
GND5
13
10
GND6
EGSM_RX
14
1
GND7
DCS_RX
11 2
SHS-C090DR
C423
27p
ANT_SW2
GPO_11
C433
27p
ANT_SW1
GPO_9
C436
10p
ANT_SW1
DCS_TX
L
GSM_TX
H
RX
L
RF2.85V
RF2.85V
R414
10K
BOARD_TEMP
10u
R499
C456
RF BOARD TEMPERATURE
VBAT
Closed to Pin 4
GND3
GND4
C403
C404
C405
C406
C450
18p
18p
47p
22p
33u
RF2.85V
GSM_IN
7
VCC1
8
L401
VRAMP
6
GSM_OUT
3.9nH
9
C413
VREG
5
NA
VCC_OUT
RF3133
VBATT
4
10
U401
C414
TX_ENABLE
3
DCS_OUT
7p
11
BAND_SELECT
2
VCC2
L402
12
DCS_IN
1
4.7nH
C422
2p
2
3
FL402
1
G1
O1
L403
22nH
IN
G2
O2
5
4
B7820
C424
2p
C426
1.5p
2
3
FL403
1
G1
O1
IN
L404
6.8nH
G2
O2
5
4
B7821
C428
1.5p
ANT_SW2
H
L
L
VBAT
U410
5
1
OUT
IN
2
C438
GND
4
3
BYP
EN
CLK_ON
0.01u
MIC5255-2.85BM5
10u
6.8K
C457
R489
Iss.
C407
C408
C409
R405
C410
27p
27p
39p
47
33p
R406
R407
130
130
RF2.85V
R309
C417
C418
100p
36
10p
R408
R409
150
150
RF2.85V
C420
22n
21
RFIGN
20
RFIGP
19
1
RFIDN
RXQN
18
2
RFIDP
U402
RXIP
17
3
RFIPN
RXIN
16
4
RFIPP
TXIP
15
5
SI4205
GND1
TXIN
36
6
GND8
TXQP
35
7
GND7
TXQN
34
GND6
33
GND5
RF2.85V
C429
C430
0.022u
22p
C431
100p
2V75_VTCXO
X401
R412
3
OUT
VCONT
100
4
VCC
C437
13MHz
2.2u
(1608)
Section
Date
05/21
Designer
2004
05/21
Checked
2004
05/21
Approved
2004
Notice No.
Date
Name
LG Electronics Inc.
- 94 -
TP401
RF_PWR_DWN
TP402
S_EN
TP403
S_CLK
TP404
S_DATA
R402
15K
TX_RAMP
AD6535_PA
R403
100
PA_EN
GPO_16
R404
100
PA_BAND
GPO_17
C415
1000p
13MHZ
RXQP
C419
39p
RXQN
RXIP
C421
39p
RXIN
TXIP
C425
39p
TXIN
TXQP
C427
39p
TXQN
R413
1
AFC
AD6535_AFCDAC
15K
C434
2
1000p
GND
RF_PWR_DWN
GPO_4
S_EN
GPO_19
S_CLK
GPO_21
S_DATA
GPO_20
Sign & Name
Sheet/
MODEL
Sheets
F7100
LEE S.Y.
4/4
KIM B.Y.
YOUN K.J.
DRAWING
RF
NAME
CHO J.G.
DRAWING
V1.1
NO.
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