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3. TECHNICAL BRIEF
LG Electronics
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LGE Property
3.22 PAM Schematic
Figure 28 PAM schematic
R513
100p
C591
10n
U502
15
7
8
6
11
14
5
9
4
13
3
10
2
12
1
DCS_PCS_IN
DCS_PCS_OUT
MODE_SELECT
GSM850_900_OUT
BS
BY_CAP1
VBATT
BY_CAP2
VRAMP
GND1
GND2
TX_EN
GND3
GSM850_900_IN
PGND
C549
100p
10K
R507
C547
27p
C548
100p
C590
10n
C524
100p
41
5
R
p0
01
1u
C546
T
A
B
V
47p
C639
C520
33u
PA_LEVEL
PA_MODE
PA_BAND
TXON_PA
LBAND_PAM_IN
HBAND_PAM_IN