Rf Circuit - LG G5300 Service Manual

8. CIRCUIT DIAGRAM

8.4 RF CIRCUIT

1 2
A
ANTENNA
OUT401
CN401
KMS-502
B
C425
22p
C427
4p
FL401
LMSP54AA-097
8 L403
C429
ANT
8.2nH
0.5p
4
GND1 3
DCS_TX
6
5
GND2 EGSM_TX
7
GND3 L405
9
GND4 1.5nH
12
1
GND5
DCS_RX
13
10
GND6 EGSM_RX
L406
C433
NC
1p
2 11
C
L409 L410
2.7nH 1.8nH
DCSSEL
C445
10p
GSMSEL
C448
27p
C451 C452
1.5p NC
D
E
1 2
LGIC(42)-A-5505-10:01
3 4
R401
15K
TX_RAMP
C402
39p
R403
0
RF2.85V
C406
1000p
R404
100
TXPA
C407
27p
R405
100
BANDSEL1
C408
27p
VBAT
4dB Atten.
R408 R406
R409
220 22
220
C417 C418 C419 C420 C421
12p 12p 47p 47p 10uF
2012
R411
390
2dB Atten.
1
R415 R414
R416
DCS_IN 12
12 VCC2 470
2 470
BAND_SELECT
DCS_OUT
11
3
TX_ENABLE
U402
4
RF3110
VCC_OUT
VBATT
10
5 L404
VREG C432
150nH
47p
GSM_OUT
VRAMP
9
6
8 VCC1 GSM_IN
1608
7
R421
390
R422
C436
1K 1%
1n
1608
COG
C444
FL402
1.2p
FAR-G6CS-1G8425-L257
1 7
IN1 OUT1
3.3nH
3 IN2 5
OUT2
G4 G3 G2 G1
C450
0.5p
RF2.85V
RF2.85V VBAT
U404
1 6
OUT _SD VSYNTHEN
3 2
TEMPSENSE _ERR IN
5 4
NR GND C457
R430
C458
2.2u
0
10uF ADP3330
2012 2012
C459
470p
3 4
5 6 7
RF2.85V
R402
10
C403 C404
22p 0.1u
RF2.85V
C413 C412
33p 10p
L401
10nH
R410
C422
510 1.8p
R412
1
51
TxDCSPCS
2
TxVCOTune
TP403 3
RX_EN
RXEN
4
TX_EN TP405
TxEN
L402
TP407 5
BANDSEL1 PCO1
1.5nH
6
PCO2
7
TXBYPASS
8
VCC1
9
TxCPO
10
TxINP
11
LNAGSMIN
12
GNDLNAGSM
13
LNADCSIN
14
TP410 FEENA
RF2.85V
15
LNAPCSIN
16
NC6
17
NC7
C434
R420
C435
10p
10
0.1u
C441
12p
L407
1608
L408
82nH COIL
10nH
C446
22p
L411
2V7_VTCXO
C456
R424
1000p
15K
AFC
Iss. Notice No. Date Name
5
- 116 -
8 9
RF2.85V RF2.85V
C411
0.1u
C409
22p
C410
0.1u
TP401
C414
10u
C415
2012
1u
1608
R407
5.6K
RF2.85V
C423
220p
RF2.85V
49
R413
UHFBYP C424
48
VDDBB 680p
TP402
47
PLL_LE
LE
TP404
46
PLL_CLK
CLK
TP406
45
DATA PLL_DATA
TP408
44
LDMUX R417
43 TP409
SXENA PLL_PD 10
42
VCCFNCP
41
U401 C428
UHFCPO
C430
40 0.1u
GNDCP C431 22p
39
CX74017 10p
GNDFN
RF2.85V
38
FREF
37
VCCF
36
VCCD
35
GNDD
34
NC4 R418
33 10
NC5
G1
GND1
C438 C439 C440
C437
22p 0.1u 0.1u
22p
R423
39K 1%
RF2.85V
C447
0.1u
C449
100p
C453
100p
C454
2.2u
X401 2012
13MHz U403
SN74AHC1GU04DCKR
GND VCC C455
2 4 5 R425
1000p
100
2 VCC 4
CTL OUT
1 3 IN OUT
GND
3
R426 1M
Section Date Sign & Name
MODEL
12/02
Designer
MS YEO
2002
Checked
DH KIM
DRAWING
RF Circuit
NAME
NS KIM
Approved
DRAWING
LG Electronics Inc.
NO.
10
RXIP
C401
100p
RXIN
RXQP
C405
100p
RXQN
A
B
2.2K
C426
8200p
2012 FILM
RF2.85V
R419
10
C
T_H
TXQN
TXQP
TXIN
TXIP
D
13MHZ
Sheet/
Sheets
4/4
VER 1.4
LG Electronics Inc.