Circuit Diagram - LG U8110 Service Manual

9. CIRCUIT DIAGRAM

1 1 2 2 3 3
A A
WCDMA_TX
B B
GSM_TX
DCS_TX
V1001
RN47A4
VCCB
C C C1010
1000p
ANTSW3
ANTSW2
ANTSW1
ANTSW0
D D
E E
VDD_A
VDD_B
EXTLDO
F F
VBATI
G G
H H
1 1 2 2 3 3
4 4 5 5 6 6
C1012
22p
RX
TX
N1002
DFYK61G95LBNCB
8
12 14 6
ANT
15
GND2 VC2
13
GND1 VC1
5
GND5
7
GND4
3
GND3 VDD
R1002
16 4 2 1
NA
C1011
R1007 22p
51
R1001 R1006
0
NA
R1005
0
R1004
0
R1003
0
C1007 C1001 C1009 C1002 C1008 C1003
0.01u 10p 10p 0.01u 10p 0.01u
N1800
LP2985AIBP-2.8
R1804
5 1
ON_OFF GND
NA
2
BYPASS
R1800 4 3
VIN VOUT
NA
NA
C1800
0.1u C1801
1000p
R1851
0
N1850 LP3981ILD-2.8
1 6
VOUT VEN
R1850
2 5
VIN BYPASS
0
3 4
VOUT_SE GND1
C1850 C1852 C1851
0.1u 10u 0.033u
2012
4 4 5 5 6 6
7 7 8 8
W1001
KMS-507
C1013
G2
RF ANT
G1
22p
N1000
LMSP54MA-213 L1001
12nH
9
10
11
C1004 C1005
0.01u 10p
R1810
0
R1811
0
C1810 C1811 C1802
10u 4.7u 10u
2012
2012
R1801
NA
R1825
0
R1826
0
Changed by: Changed by:
SG Kang
7 7 8 8
- 235 -
9 9 10 10 11 11
WCDMA_RX
C1000
6.8p
ANTPAD
L1002
5.6nH
DCS_RX
GSM_RX
VCCA
VCCB
V_wivi_A
V_wivi_B
Engineer: Engineer:
LG ELECTRONICS INC.
SG Kang
3G HANDSETS LAB.
Drawn by: Drawn by:
DEVELOPMENT GROUP 1
SG Kang
R&D CHK: R&D CHK:
TITLE: TITLE:
ANT SW to ANT
DOC CTRL CHK: DOC CTRL CHK:
U8100 PT V1.3 Staggered AMD
MFG ENGR CHK: MFG ENGR CHK:
Date Changed: Date Changed: Time Changed: Time Changed: QA CHK: QA CHK: REV: REV: Drawing Number: Drawing Number:
Tuesday, September 04, 2003 5:01:55 pm
9 9 10 10 11 11
12 12
A A
B B
C C
D D
E E
F F
G G
H H
Size: Size:
A2 A2
12 1 8 A 12 1 8 A
Page: Page:
1
12 12