Wcdma Band1/8 Power Amplifier Module - LG KM555 Service Manual

WCDMA_850
WCDMA_900
WCDMA_1900
WCDMA_2100

4.5 WCDMA Band1/8 Power Amplifier Module

C564
1.8p
L512
2.2n
L516
1.8n
C572
3.3p
L526
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Copyright 2008 LG Electronics. Inc. All right reserved.
C550
DNI
VBAT VBAT
C565
DNI
C567
56p
C571
68p
C573
DNI
Place near to each port
[Figure 4.5-1] Schematic Diagram of WCDMA Band1/8 PAM (AWT6224R)
C588
1.5p
C591
1.5p
3.3n
C592
3.9p
C595
L529
4.7p
4.7n
[Table 4.5-1] AWT6224R Pin description
C549
33n
DNI
L506
3.3n
C551
C552 C599
1p
10n 10n
U505
AWT6224R
RFOUT_IMT
8
GND1
9
GND2
10
VCCA
11
VCC
12
RFOUT_900
13
GND3
C574
14
PGND
15
1n
AWT6222 : BAND1/5
AWT6321 : BAND2/5
2V85_VRF
AWT6224 : BAND1/8
L520
47n
C584
0.1u
Band 1 / 2 Change
R517
L524 DNI
5.6n
R518
0
L527
12n
- 67 -
BY_CAP2
9
U501
BY_CAP1
13
GSM850_900_OUT MODE_SELECT
10
DCS_PCS_OUT DCS_PCS_IN
12
4. RF Circuit Technical Brief
VBAT
Place near to each port
C561 C562
2.2n 2.2u
VEN_IMT
7
RFIN_IMT
6
NC_VMODE2
5
VBATT
4
VMODE1
3
RFIN_900
2
VEN_900
1
C575 C576
100p 10n
6
RFINM PGND
7
RFINH RFOUTM
U506
8
BGA735
RFGNDM1 RFOUTH
9
RFGNDM2 RFOUTL
R522
33K
VBATT
4
BS
3
2
1
C553
47p
C563
47p
C570
DNI
3G_PA_MODE1
C577
10n
SAFEA897MFL0F00
C579
C583 47p
DNI
Band 1 / 2 Change
17
R519 DNI
16
R520 0
15
14
L525
3.3n
LGE Internal Use Only
2G_BS
PA_MODE
SAFEB
1
L511
2
DNI
5
B
B
FL1
OU
1
C580
897.
DNI