Motorola CP150TM User Manual
Page 99
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)
7-29
6880309N62-C
June, 2005
NU
10 mV RMS (TX)
1.5 V
INTERNAL SPEAKER
ACCESSORY CONNECTOR
MICROPHONE CONNECTOR
NU
114 mV (RF)
150 mV RMS (25 kHz) (RX)
75 mV RMS (12.5 kHz) (RX)
NU
0
2.3 V
1.5 V
3 V (UNSQ)
0.15 V (UNSQ)
145 mV RMS
200 mV RMS
7.5 V
0 V (RX)
3 V (TX)
3.5 V (UNSQ)
3.46 V RMS (RX) (0.5 W @ 24 OHMS)
3.5 V (UNSQ)
R478
2.2K
20V
MMBZ5250B
VR474
2.2K
3V_A
NC
R471
R462
R499
270K
24K
2
3
1
8
4
C465
1000pF
LM2904
U480-1
6
5
7
8
4
NU
C466
R517
LM2904
U510-2
0.1uF
.01uF
C482
C463
.022uF
C475
C471
R477
2.2K
NC
2.2uF
C492
2.2uF
R460
24K
R451
47K
0.1uF
R472
680
0.1uF
C451
C456
5V_B
VR472
0.1uF
C483
C481
.01uF
Not_Placed:NU
R493
330K
R519
100K
NC
R518
220K
MMBZ5245B
VR475
2.2K
R470
15V
J491-2
2
0.1uF
C472
3V
C464
0.1uF
R481
100K
330
R474
2
6
4
1
3
NC
C476
.022uF
Q490
10K
R496
Not_Placed:NU
0
100K
R486
R480
C461
NC
C458
0.1uF
1000pF
180K
R483
R464
30K
VR473
MMBZ5250B
20V
R492
24K
LM2904
U510-1
2
3
1
8
4
0.1uF
C462
R473
D470
Not_Placed:NU
1
3
2
680
C511
Q481
150pF
220pF
C454
C474
J470-1
1
0.1uF
R521
D471
NC
100K
180K
3V_A
R475
C498
R482
180K
R463
1uF
24K
6
VCC
R513
7
GND
4
INNEG
INPOS
3
1
MODE
5
OUTNEG
8
OUTPOS
2
SVR
2
5
6
3
1
4
TDA8541
U490
C513
Q472
47K
220pF
D492
R498
11
VDDDAC
45
VDDRC
27
VDD
S
YN
7
VOX
9
SQIN
28
SYN
36
TXRTN
44
TXSND
10
UIO
1
VDDA
32
VDD
C
P
33
VDDD
40
MOD
26
NC
8
PLCAP
PLCAP2
25
43
RXRTN
39
RXSND
12
SQCAP
17
SQDET
30
GNDDO
47
GNDRC
23
GNDSYN
19
HSIO
24
LCAP
18
LSIO
48
MICEXT
46
MICINT
15
GCB0
14
GCB1
13
GCB2
35
GCB3
37
GCB4
38
GCB5
3
GNDA
31
GNDD
34
CLK168
20
CSX
6
DACG
5
DACR
4
DACU
22
DATA
2
DISC
29
F1200
U451
30C53
41
AUDIO
42
AUXTN
16
CHACT
CLK
21
0.1uF
C518
VR471
5V_B
16pF
C514
U480-2
LM2904
6
5
7
8
4
100K
R476
5V
0.1uF
C457
C453
0.1uF
D491
3V
NC
R487
BK1005HM471
E452
R515
0
Not_Placed:NU
3V_A
R484
2.2K
1
3
2
L471
390nH
Q482
5V_B
NC
R494
330K
C519
3V_A
5V_A
.022uF
1uF
R491
C455
100K
0
R485
1
0.1uF
C459
R511
100K
2.2K
R490
Not_Placed:NU
1uF
C496
C495
1uF
C488
C489
470pF
470pF
C477
C470
0.1uF
0.1uF
150pF
C473
C494
2.2uF
82pF
C467
NC
3V_A
C499
7
4
S2
S3
6
5
S4
1200pF
J471
1
M1
2
M2
3
M3
S1
0.1uF
C452
2
6
4
1
3
5V_A
5V
R497
Q471
1MEG
1%
3.9K
R520
100K
C497
R255
C493
0.1uF
R516
1000pF
6.8pF
C512
100K
R512
150K
R479
R514
100K
Q470
2
5
6
3
1
4
0.1uF
5.6K
C460
2
R495
E453
BK1005HM471
5V_B
BK1005HM471
E451
C484
.033uF
Not_Placed:NU
5V_A
Q520
1
3
2
3V
5V
OPT_MIC
5V_A
DEMOD
ASFIC_CS
BATT_CHARGE
OPT_TX_AUD_RETURN
OPT_RX_AUD_SEND_DETECTOR
SPI_DATA_OUT
LSIO
SPI_CLK
CH_ACT
VOX
PWR_SET
EXT_MIC_PTT
OPT_TX_AUD_FLAT_RETURN
SW_B+
16_8_MHZ
MOD_OUT
RESET
OPT_RX_AUD_RETURN
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_SEND
BOOT_ENA
SQ_DET
BW_SEL
F1200
HSIO
VS_GAIN_SEL
VS_RAC
VS_AUDIO_SEL
uP_CLK
SCI
Figure 7-35. VHF (146-174 MHz) Audio Circuitry Schematic Diagram (8486342Z09-A)