Only For Training And Service Purposes - LG GD310 Service Manual

1V5_VRF 2V85_VRF
C408
100n
LBAND_PAM_IN
HBAND_PAM_IN
C401
220N
1V5_VRF
R404
10
C410
220N
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

GSM850 GSM900 DCS1800
2V85_VRF
C403
4.7N
L403 L401 L402
18n 18n 5.6n
FE2
33
VBIAS
34
VDDTX1V5
35
TX1
36
TX2
37
VDDTX2V8
R407
38
VDDMIX2V8
10 39
GND3
40
GND4
41
2V85_VRF
C407
100n
Figure 28. RF transceiver PMB6272 SMARTi-PM schematic
PCS1900
C423
L400
5.6NH
1V5_VRF 2V85_VRF
C404 C432 C419
100n 100n 100n
VDDRX2V8
20 C406 47N
VDDRX1V5
R403
19
VCO_RC
820
18
VDDVCO2V8
17
EN
16
VDDXO2V8
15
FSYS1
14
GND1
13
X400 NX3225SA
4
3
GND2 HOT2
1 2
HOT1 GND1
26MHZ
BT_CLK
RF_CLK
RF_DA
QX
Q
IX
I
- 57 -
3. Technical Brief
L405
C431 C445
0.01U 0.01U
3.9n
C435
DNI 1.5p
2V85_VRF
C418
100n
RF_EN
C405 1000P
26MHZ_MCLK
LGE Internal Use Only