Power Amplifier Module; Only For Training And Service Purposes - LG KS360 Service Manual

3.26 Power Amplifier Module

L606
1.2nH
C635
C634
0.5p
0.5p
R615
1
C641 C642
DNI DNI
Table 10 PAM pin description
Pin Mame
1 MODE
2 DCS/PCS_IN
3
4 REVD1
5 VBATT
6 VRAMP
7 GSM_IN
9 GSM_OUT
10,11 GND
12 REVD2
13,14,15 GND
16 DCS/PCS_OUT
Pad GND PAD GRID
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

TQM7M5005
15
PGND
8
GND3
11
GND2
14
GND1
9
BY_CAP2
13
BY_CAP1
10
GSM850_900_OUT
12
DCS_PCS_OUT
C639 C640
0.01u 0.01u
Figure 28. Power Amplifier Circuit Diagram
GMSK/EDGE Power control mode. L=GMSK, H=EDGE
RF input(DCS/PCS) DC Blocked
BS Band Select
Reserved
DC Supply
Analog PA Bias Control(All Bands, EDGE Mode)
Analog Output Power Control(All Bands, GMSK Mode)
RF input(EGSM) DC Blocked
RF Output(EGSM) DC Blocked
Ground
Reserved
Ground
RF Output(DCS/PCS) DC Blocked
Ground pad grid is device underside.
3. TECHNICAL BRIEF
VBAT
C628
C629 C630
10u
1u 27p
U600
7
GSM850_900_IN
6
TX_EN
5
VRAMP
4
VBATT
3
BS
2
MODE_SELECT
1
DCS_PCS_IN
C636
DNI
Description
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R609 1
TXLB
R610 1
PA_EN
R611 10K
TX_RAMP
R612 1
PA_BAND
R613 1
PA_MODE
R614 1
TXHB
C638
C637
DNI 47p
LGE Internal Use Only