Pam Schematic - LG KC560 Service Manual

3. TECHNICAL BRIEF

3.26. PAM Schematic

GND3
GND2
GND1
C465 C466
0.01u 0.01u
LGE Internal Use Only
TQM7M5005(5x5 )
PGND GSM850_900_IN
15 7
TX_E N
8 6
11
VRAMP
14 5
U400
TQM7M500 5
BY_ CAP2 VB ATT
9 4
BY_ CAP1 BS
13 3
GSM850_900_OUT MODE_SELECT
10 2
DCS_PCS_OUT DCS_PCS_IN
12 1
Figure 34 PAM schematic
VSUPP LY
R411
C423 C424 C412 C425 C464
33 uF
0.1u 1u 27p 47p
- 56 - Copyright © 2008 LG Electronics. Inc. All right reserved.
LBAND_ P AM_I N
TXON_ P A
10K
P A_LEVE L
P A_BAN D
P A_MOD E
HBAND_ P AM_I N
C402
100p
Only for training and service purposes