Only For Training And Service Purposes - LG KF510C Service Manual

3. TECHNICAL BRIEF
2V85_VRF 2V85_VRF
1V5_VRF
C422 C423
0.1u 4.7n
VBIAS
LBAND_PAM_IN
HBAND_PAM_IN
R407
C438 C439
0.1u 0.1u
1V5_VRF
2V85_VRF
R413
10
C450
220n
Figure 32 RF transceiver PMB6272 SMARTi-PM schematic
LGE Internal Use Only
GSM850 GSM900 DCS1800
C414 C415 C416
C417 C418 C419
2.5p 2.5p
2.2p
2.2p 2.2p 2.2p
L405
L404
L403
18nH 5.1nH
22nH
FE2
33
VBIAS
34
VDDTX1V5 VDDRX2V8
35
TX1 VDDRX1V5
U402
36
TX2 VCO_RC
PMB6272
37
VDDTX2V8 VDDVCO2V8
38
VDDMIX2V8 EN
39
GND3 VDDXO2V8
40
10
FSYS1
GND4 GND1
41
C441
1000p
C451
0.1u
C407 C408
DNI DNI
PCS1900
C480
22p
C420 C421
C409 C410
1.5p 1.5p
DNI 0.5p
L406
5.1nH
2V85_VRF
1V5_VRF
C430 C431 C432
0.1u 0.1u 0.1u
20 C434
R406 47n
19
18 820
17
16
15
14
13 2V85_VRF
R410
10
C452 C453
0.1u 1u
BT_CLK
RF_CLK
RF_DA
QX
Q
IX
I
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 64 -
GND16 GND6
SKY77340
36 17
GSM_OUT EN
9 8
GND5 GSM_IN
10 7
GND4 VRAMP
11 6
RSVD2 VBATT
12 5
GND3 RSVD1
13 4
GND2 BS
14 3
GND1 DCS_PCS_IN
15 2
DCS_PCS_OUT MODE
16 1
C424 C425 C411 C426
68u
0.1u 1u 27p
2V85_VRF
C433
0.1u
RF_EN
C437
26MHZ_MCLK
1000 pF
R412
X400
10K
3 1
OUT VCONT
C442
4 2
VCC GND 0.01u
26MHz

Only for training and service purposes

C427
100p
AFC