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3. TECHNICAL BRIEF
3.24 PAM Schematic
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TQM7M5005(5x5)
C420
0.01u
VBAT
C410
0.5p
L405
3nH
C418
100p
6.8nH
L404
C403
33 uF
100p
C417
C412
100p
C419
0.01u
GSM850_900_IN
10
GSM850_900_OUT
2
MODE_SELECT
15
PGND
TX_EN
6
4
VBATT
VRAMP
5
3
BS
13
BY_CAP1
BY_CAP2
9
DCS_PCS_IN
1
DCS_PCS_OUT
12
GND1
14
GND2
11
GND3
8
7
C404
TQM7M5005
U400
1u
47p
C416
27p
C405
C421
C422
1.5p
DNI
C411
0.5p
10K
R405
PA_BAND
PA_LEVEL
TXON_PA
HBAND_PAM_IN
LBAND_PAM_IN
PA_MODE
Figure 30 PAM schematic