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7
11
3
11
D
8
10
Date Changed:
4
Engineer:
Page:
W.J.KIM
12
Size:
QA CHK:
F
2
REV:
Time Changed:
B
10
R&D CHK:
DCS1800
PCS1900
12
C
6
7
A
Drawn by:
E
5
C
Changed by:
GSM850
MFG ENGR CHK:
ME820
A3
12 1 8 A
E
DOC CTRL CHK:
9
H
4
TITLE:
1
D
6
Issue 1.0
Drawing Number:
G
2
1
GSM900
9
A
3
H
8
5
B
LG Electronics
G
F
mentor
2005-06-01
3:07:35 pm
3/5
3
4
VBATT
VMODE
5
6
VRAMP
100p
C402
23
9
GND2
GND3
11
GND4
13
GND5
14
16
GND6
GND7
17
GND8
19
GND9
21
HB_RFIN
1
18
HB_RFOUT
LB_RFIN
7
12
LB_RFOUT
10
NC1
NC2
15
20
NC3
TX_EN
U401
RF3158
2
BAND_SEL
8
GND1
22
GND10
GND11
R454
0
33nH
L410
1000p
1000p
C427
C423
10nH
L406
R449
0
0
R448
NA
C433
L402
5.6nH
R413
2V85_RF
0
2V85_RF
C455
1500p
C444
NA
C432
1.8p
R440
NA
NA
R416
C463
15p
2V85_RF
C440
1.8p
C426
100p
R429
0
C454
820
R414
100p
C446
R415
NA
1.8p
R430
0
C425
0.1u
2V7_VCXO
0.1u
C420
R412
0
11
XO
XOX
12
10
R423
RX4X
23
TX1
36
37
TX2
VBIAS
34
18
VCO_RC
VDDBIAS2V8
31
VDDDIG1V5
8
5
VDDDIG2V8
VDDLNA1V5
21
39
VDDMIX2V8
19
VDDRX1V5
VDDRX2V8
20
35
VDDTX1V5
VDDTX2V8
38
17
VDDVCO2V8
15
VDDXO2V8
32
FE1
33
FE2
FSYS1
14
FSYS2
10
9
FSYS3
GND1
13
26
GND2
GND3
40
41
GND4
RX1
29
30
RX1X
RX2
27
28
RX2X
24
RX3
RX3X
25
22
RX4
U402
1
A
AX
2
3
B
BX
4
7
CLK
DA
6
EN
16
C409
100p
PMB6272
C424
0.1u
100p
PCS_RX-
12
6
TX1G
8
TX2G
22
VCTRL1
VCTRL2
21
VCTRL3
20
VDD
3
VSUPPLY
C403
17
EGSM_RX-
16
GMS_RX-
18
GND1
2
GND10
25
26
GND11
GND2
4
5
GND3
GND4
7
9
GND5
GND6
10
GND7
11
23
GND8
24
GND9
19
13
YGHF-S006A
FL308
1
ANT
15
DCS_RX-
14
C419
47n
0.1u
C428
0
R426
R424
0
0
R427
PT401
0.1u
C421
10K
R431
0
C416
C435
NA
0.1u
2V7_VCXO
C443
1.8p
100p
C404
1K
R425
C429
0.1u
R428
0
1nH
L408
15nH
L409
5.6nH
L403
C417
1u
C445
1.8p
2V85_RF
ANT406
100p
100p
C452
C401
1
R420
NA
2V85_RF
ANT405
0
R419
C410
0.5p
KMS-506
SW401
ANT
G1
G2
RF
1V5_RF
C431
1uF
27p
0
R407
C406
C414
2.2p
L404
18nH
C437
0.1u
1.8p
C441
C408
68u
R405 100
NA
1V5_CORE
0.1u
C418
R421
C439
1.8p
C434
NA
NA
C430
R417
22K
1V5_RF
100p
100
R441
C453
10
R418
0.1u
C422
1
VCONT
18nH
L405
X401
26MHz
2
GND
OUT
3
4
VCC
0
R406
L407
3.9nH
GND405
C457
C442
10u
1.8p
100
R403
ANT_SW3
MODE
HBAND_PAM_IN
LBAND_PAM_IN
I
IX
Q
QX
RF_TEMP
AFC
ANT_SW2
ANT_SW1
RF_DA
RF_EN
TXON_PA
PA_BAND
RF_CLK
26MHZ_MCLK
BT_CLK
PA_LEVEL
HBAND_PAM_IN
LBAND_PAM_IN
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
