Controller Audio Power Amplifier Schematic Diagram - Motorola GP328 Plus Service Manual

4-26
R423
470K
C447
R472
0.1uF
36K
AUDIO
R431
470K
C448
R424
0.1uF
36K
AUDIO_PA_ENA

Controller Audio Power Amplifier Schematic Diagram

UNSWB+
C475
10uF
R473
10
5102463J44
C442
R499 U420 0.1uF
10K TDA8547
20 11
16 3
IN1POS OUT1POS
17 18
IN1NEG OUT1NEG
R498
15 8
IN2POS OUT2POS
10K
14 13
IN2NEG OUT2NEG
2
NC1
7
6
SELECT NC2
9
4
MODE NC3
12
5
EXT_MIC
SVR NC4
19
NC5
C476
10uF
5V
R436 R421
2K
0
Vdda
(3.3V)
C440
SWB+
4.7uF
INT_MIC
C450
R471
100pF
NU 20K
6
4
Q410
UMG5
4802245J54
MMQA5V6T1
3 4805656W08
1 2
EXT_SPKR_SEL
VR432
5.6V
OPT_SEL2
OPT_SEL1
C443
L401
0.1uF
390nH
C445
100pF
R435
2K
R434
330
SCI_RX
C444
100pF
SCI_TX
L400
390nH
RSSI
FLAT_RX_SND
C441
100pF
BOOT_CTRL
C497
100pF
C496
VR450
100pF
C495
10V
100pF
C494
100pF
MMBZ5240B
4880140L15
MMBZ5240B 4880140L15 x 5pcs.
SWB+
VR446
VR445 10V
10V
R450
68
1W
C471
100pF C472
100pF
C473
100pF
R477
1K
C493
VR433
100pF
5.6V C490
100pF
C492
100pF
C491
100pF
ZMY0130820-O
MMQA5V6T1
4805656W08
VR447 VR448 VR449
10V 10V 10V
J403
0909059E04
20 PIN CONN
J403-1
GND
J403-2 INT_SPK+
J403-3
INT_SPK-
J403-4
EXT_SPK+
J403-5
EXT_SPK-
J403-6
OPT_B+
J403-7 EXT_MIC
J403-8 OPT_SEL_2
J403-9 OPT_SEL_1
J403-10 GND
J403-11
RX_DATA
J403-12
TX_DATA
J403-13
GND
J403-14
RSSI
J403-15
RX_AUDIO/TX_AUDIO
J403-16 BOOT_CTRL
J403-17 NC
J403-18 MIC
J403-19 GND
J403-20 GND