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7. CIRCUIT DIAGRAM
1
2
3
A
B
C
R516
(GPO_11)
ANT_SW2
0
C524
270p
R517
(GPO_9)
ANT_SW1
D
0
C528
270p
E
F
G
H
1
2
3
LGIC(42)-A-5505-10:01
4
5
6
TP501
TP502
TP503
C555
15p
C510
C511
0.5p
NA
C516
22p
C517
C518
NA
NA
GND13
PCS_RX2
24
15
GND12
PCS_RX1
23
14
GND11
DCS_RX2
22
13
GND10
DCS_RX1
21
12
GND9
EGSM_RX2
20
11
GND8
EGSM_RX1
19
10
GND7
18
GND6
17
GND5
16
GND4
7
GND3
DCSPCS_TX
6
5
GND2
EGSM_TX
4
8
GND1
2
HWXQ511
FL501
VBAT
2V85_RF
U504
MIC5255-2.85BM5
1
5
IN
OUT
2
GND
3
4
CLKON
EN
BYP
C543
C545
C546
C547
4.7u
27p
1uF
0.01u
VBAT
1V8_CLK
U505
BH18LB1WHFV
1
5
CLKON
STBY
NC
2
6
GND
BGND
3
4
VIN
VOUT
C550
C552
C553
2.2u
27p
1uF
4
5
6
7
8
9
VBAT
R501
PA_BAND
(GPO_17)
C502
C503
C504
C505
C501
0
18p
0.01u
27p
10p
22u
C506
1000p
R502
PA_EN
(GPO_16)
0
C508
1000p
RSVD_GND
BS
3dB ATTEN
19
1
ENABLE
18
SKY77328
R507
GSM_OUT
U501
GSM_IN
11
4
18
DCS_PCS_OUT
DCS_PCS_IN
R508
R509
15
3
300
300
2dB ATTEN
2V8_VEXT
R510
C513
C514
12
0.01u
0.01u
R512
R513
R514
430
430
0
(PA)
R515
TX_RAMP
10K
C519
27p
C520
22p
C525
1.8p
RFIPP
XOUT
17
8
RFIPN
BIP
18
7
RFIDP
BIN
L503
U502
19
6
RFIDN
BQP
C527
5.6nH
20
SI4210D
5
RFIEP
BQN
21
4
1.8p
RFIEN
SDIO
22
3
RFIAP
_SEN
23
2
RFIAN
SCLK
2V85_RF
24
1
C529
1.5p
C530
27p
L504
6.8nH
C533
C534
C535
1.5p
22p
0.1u
C536
1.5p
27nH
L505
C539
1.5p
R521
100
C542
NA
2V75_VVCXO
C544
27p
X501
R523
1
3
(AFCDAC)
AFC
VCONT
OUT
15K
2
4
GND
VCC
C548
26MHz
1000p
C549
2.2u
C551
27p
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
LG Electronics Inc.
7
8
9
- 145 -
10
11
12
R511
RF_RST
(GPO_10)
NA
RF_PWR_DWN
(GPO_4)
C515
2V85_RF
27p
C521
C522
IP
0.1u
100p
C523
39p
IN
QP
C526
39p
QN
S_DATA
(GPO_20)
(GPO_19)
S_EN
(GPO_21)
S_CLK
C531
C532
27p
27p
1V8_VCORE
1V8_CLK
C538
0.1u
1M
C540
R520
1000p
U503
5
NC7SV00P5X_NL
1
VCC
R522
4
26MHZ
2
CLKON
0
GND
3
27p
C541
Date
Sign & Name
Sheet/Sheets
MODEL
KG920(MAIN)
2006/
H. LEE
5/7
03/11
DRAWING
RF PART
NAME
DRAWING
VER_1.0
NO.
10
11
12
LG Electronics Inc.
A
B
E
F
G
H
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