LG GS290 - Page 54

- 55 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
GS290 Operational Description Revision B
LG Electronics 56/136 LGE Property
Figure 24 RF transceiver PMB6272 SMARTi-PM schematic
26MHz
X500 TSX-3225
21
3
4
GND2 HOT2
HOT1 GND1
0.1u
C518
U500
PMB6272
20
19
18
17
16
15
14
13
12
2
1
2211
32
01
42
9
528 6
2
7
72
6
82
5
924 0
3
3
13
2
23
1
33
34
35
36
37
38
39
40
41
GND4
GND3
VDDMIX2V8
VDDTX2V8
TX2
TX1
VDDTX1V5
VBIAS
FE2
A 1EF
XA 8V2SAIBD
DV
B X1X
R
XB 1X
R
8V2
G
IDDDV X2X
R
A
D
2XR
K
L
C
2DN
G
5V1
GI
D
D
DV X3X
R
3SYSF 3XR 2SYSF X4X
R
OX 4X
R
X
OX 5V
1AN
L
D
DV
GND1
FSYS1
VDDXO2V8
EN
VDDVCO2V8
VCO_RC
VDDRX1V5
VDDRX2V8
VRF_2V85
VRF_1V5
C511
220n
VRF_2V85
1nC516
C517
47n
0.1u
C535
01
6
0
5R
10
R507
VRF_2V85VRF_1V5
220n
C522
0.1u
C506
R508
820
0.1u
C536
0.1u
C537
RF_EN
RF_DA
RF_CLK
26MHZ_MCLK
QX
Q
IX
I
CLK26M
LBAND_PAM_IN
HBAND_PAM_IN
VC1
VC2