Motorola CP150 - Figure 7-29. VHF (146-174 Mhz) Receiver Back End Schematic Diagram (8486342 Z09-A)

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-23
6880309N62-C June, 2005
500 mV (RF)
320 mV (RF)
390 mV (RF)
550 mV (RF)
290 mV (RF)
490 mV (RF)
100 mV RMS (25 kHz)
50 mV RMS (12.5 kHz)
0.62 V
165 mV (RF)
1.23V
16 mV (RF)
170 mV (RF)
2.14 V
0 V (25kHz)
2.8 V (12.5 kHz)
0 V (25 kHz)
1 V (12.5 kHz)
110 mV (RF)
130 mV (RF)
0.33 V
0 V (25 kHz)
5 V (12.5 kHz)
5 V (25 kHz)
0 V (12.5 kHz)
2.8 V (25 kHz)
0 V (12.5 kHz)
1 V (25 kHz)
0 V (12.5 kHz)
C92
0.1uF
TC7W04F
U52-3
20K
R67
5V
18pF
1.2uH
2%
L54
L53
680nH
0.1uF
C71
3V (25kHz)
0.74V
2.1V @ -47 dBm @ antenna
0V (12.5kHz)
3.39V
3.05V
1.5V
0.1uF
C69
12K
C73
R52
GND2
4
1
IN
2
OUT
4700pF
FL54
CFWC455G
GND1
3
0.1uF
C55
5V
0.1uF
C56
C62
0.1uF
0.1uF
C60
0.1uF
C67
2
R53
33K
Q70
MMBT3904
1
3
C80
30pF
1%
C59
2.7pF
R73
1.8K
R74
1.2K
R91
1.6K
C93
3.6pF
0.1uF
C63
0
R82
5V
NU
L81
4.7K
R57
C66
SH52
SHIELD
1
0.1uF
9.1pF
1.1%
C53
9186471Z01
FLTR
FL52
GND
3
IN
1
OUT
2
D51
1
2
3
PWR_GND
U52-4
GND
4
VCC
8
0.1uF
C65
D52
1
2
3
20K
CR51
1
3
2
R64
130pF
C70
U52-1
TC7W04F
17
680
R78
CFWC455E
FL53
GND1
34
GND2
IN
1
OUT
2
R76
1%
12K
C82
C68
0.1uF
NU
2.4K
R54
4.7K
R60
20K
NC
R66
R63
C72
0.1uF
39K
62
C81
1%
30pF
R80
U52-2
TC7W04F
1
3
2
15K
0.1uF
PBR941
Q51
5V
5V
C90
SH50
SHIELD
1
C52
R55
330
C64
0.1uF
390
R72
R65
3.3K
39K
R62
35
R61
100K
R90
Y51
2
GND
4
GND1
3
OUT IN
1
51
GND1
4
GND2
3
IN
6
OUT
44.395MHz
06B09
44.85MHz
MXF45
FL51
2
CC1
5
CC2
1
C58
3.9pF
10uF
C91
R81
R75
12K
1
C57
0.1uF
9
6
VCC
45B02
Y70
455KHz
3
2
LIM_DEC2
20
MIXOUT
OSCIN
4 3
OSCOUT
10
QUADIN
1
RFIN RFIN_DEC
2 5
RSSIOUT RSSI_FEED
GND
18
IFAMPIN
16
IFAMPOUT
IFAMP_DEC1
19 17
IFAMP_DEC2
14
LIMIN
LIMOUT
11 13
LIM_DEC1
12
SA616
U51
AUDIOOUT
8 7
AUDIO_FEED
15
R77
1%
8.2K
BW_SEL
5V
IF_IN
RSSI
DEMOD
Figure 7-29. VHF (146-174 MHz) Receiver Back End Schematic Diagram (8486342Z09-A)