Pam Schematic - LG KF350 Service Manual

3.24 PAM Schematic

L404
6.8nH
C410
0.5p
L405
3nH
C421
DNI
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Only for training and service purposes
TQM7M5005
15
PGND
8
GND3
11
GND2
14
GND1
9
BY_CAP2
13
BY_CAP1
C411
10
0.5p
GSM850_900_OUT
12
DCS_PCS_OUT
C419 C420 TQM7M5005(5x5)
0.01u 0.01u
C422
1.5p
Figure 30 PAM schematic
3. TECHNICAL BRIEF
VBAT
C403
C405
C404
33 uF
1u
27p
U400
7
GSM850_900_IN
6
TX_EN
5
VRAMP
4
VBATT
3
BS
2
MODE_SELECT
1
DCS_PCS_IN
C416
47p
- 63 -
LBAND_PAM_IN
TXON_PA
R405 10K
PA_LEVEL
PA_BAND
PA_MODE
HBAND_PAM_IN
C417 C412 C418
100p 100p 100p
LGE Internal Use Only