Gsm Power Amplifier Module - LG GS500 Manual

4.3 GSM Power Amplifier Module

4.3 GSM Power Amplifier Module
C613
GSM_PAOUT_LB
L552
15n
GSM_PAOUT_HB
C580
DNI
[Figure 4.4-1] Schematic Diagram of 2.5G PAM (TQM7M5005H)
[Figure 4.4-1] Schematic Diagram of 2.5G PAM (TQM7M5005H)
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Only for training and service purposes
PGND
15
GND3
8
GND2
3.9p
11
GND1
14
BY_CAP2
9
C554
33n
BY_CAP1
13
GSM850_900_OUT
L525
10
DCS_PCS_OUT
3.3n
12
C585 C558
C579
10n 10n
0.5p
[Table 4.4-1] TQM7M5005H Pin description
[Table 4.4-1] TQM7M5005H Pin description
4. RF CIRCUIT TECHNICAL BRIEF
GS500 service manual
GS500 service manual
GSM850_900_IN
7
TX_EN
6
VRAMP
5
U503
VBATT
4
BS
3
MODE_SELECT
2
DCS_PCS_IN
1
- 59 -
VBAT
C588 C555 C557 C611
C586
0.1u
10u 47p 18p 10u
TXON_PA
R526
PA_LEVEL
10K
2G_BS
PA_MODE
C584
47p
LGE Internal Use Only