Motorola HT Series User Manual

800 MHz Circuit Board/Schematic Diagrams and Parts List (PCB 8471827L03) 9-433
Figure 9-257. 800 MHz Controller Audio Power Amplifier
19
18
3
13
8
2
7
9
12
VCC2
NC5
OUT1NEG
OUT1POS
OUT2NEG
OUT2POS
SELECT
SVR
VCC1
IN1POS
IN2NEG
IN2POS
MODE
NC1
NC2
NC3
NC4
GND1 GND2
IN1NEG
6
5
16
14
15
4
17
1120
U420
TDA8547
R423
470K
.022uF
C447
470K
R431
0.1uF
C448
36K
R424
R472
36K
AUDIO
C476
10uF
C475
10uF
UNSWB+
1
10
SWB+
NU
C450
5.6K
R471
3
Q410
21
EXT_SPKR_SELAUDIO_PA_ENA
46
3
64
Q411
NU
21
NU
R499
10K
5V
NU
M401
C444
100pF
2K
R421
0
R436
2.2uF
C438
100pF
C441
L401
L400
390nH
390nH
2.2uF
C440
2K
R435
100pF
C445
0.1uF
C443
330
R434
Vdda
5V
INT_MIC
EXT_MIC
FLAT_RX_SND
BOOT_CTRL
SCI_RX
SCI_TX
RSSI
0.1uF
C442
R473
10
OPT_SEL2
SWB+
OPT_SEL1
C471
100pF
R450
68
100pF
C472
C473
100pF
10.0V
10.0V
10.0V
VR446 VR449
10.0V
VR447 VR448
10.0V
VR445
20 PIN CONN
J403
GND
INT_SPK-
EXT_SPK+
EXT_SPK-
OPT_B+
EXT_MIC
OPT_SEL_2
OPT_SEL_1
GND
RX_DATA
TX_DATA
GND
RSSI
RX_AUDIO/TX_AUDIO
INT_SPK+
NC
BOOT_CTRL
GND
MIC
GND
J403-14
J403-4
J403-16
J403-7
J403-15
J403-8
J403-1
J403-20
J403-11
J403-3
J403-10
J403-18
J403-6
J403-5
J403-13
J403-9
J403-2
J403-19
J403-17
J403-12
R477
1K
VR434
6.8V
VR460
6.8V
C490
100pF
C492
100pF
100pF
C493
C491
100pF
VR450
12.0V
C496
100pF
100pF
C497
5.6V
VR433
C495
100pF
C494
100pF
5.6V
VR432
AUDIO_PA

Motorola HT Series Specifications

General

Battery Type	Li-Ion
Waterproof	IP54
Operating Temperature	-30°C to +60°C
Frequency Range	VHF: 136-174 MHz
Number of Channels	16