Motorola CP150TM User Manual
Page 205
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)
12-23
6880309N62-C
June, 2005
2.14 V
0 V (25kHz)
2.8 V (12.5 kHz)
0 V (25 kHz)
1 V (12.5 kHz)
108 mV (RF)
128 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)
3V (25kHz)
0.74V
2.1V @ -47 dBm @ antenna
0V (12.5kHz)
3.39V
3.05V
1.5V
0.1uF
482 mV (RF)
296 mV (RF)
370 mV (RF)
500 mV (RF)
280 mV (RF)
500 mV (RF)
100 mV RMS (25 kHz)
50 mV RMS (12.5 kHz)
0.62 V
167 mV (RF)
1.23V
17.5 mV (RF)
167 mV (RF)
12K
R52
C69
C73
4700pF
IN
1
OUT 2
CFWC455G
FL54
3
GND1
4
GND2
C55
0.1uF
5V
C56
0.1uF
0.1uF
C62
0.1uF
C60
0.1uF
C67
33K
R53
MMBT3904
Q70
1
3
2
1%
30pF
C80
2.7pF
C59
1.8K
R73
1.2K
R74
1.6K
R91
3.6pF
C93
C63
0.1uF
R82
0
L81
NU
R57
4.7K
SHIELD
SH52
1
C66
0.1uF
C53
1.1%
9.1pF
FL52
FLTR
9186471Z01
3
GND
1 IN
2
OUT
D51
1
2
3
U52-4
PWR_GND
4
GND
8
VCC
0.1uF
D52
1
2
3
C65
R64
CR51
1
3
2
20K
5V
C71
0.1uF
TC7W04F
U52-1
1
7
C70
130pF
680
3
GND1
GND2
4
1 IN
2
OUT
R78
R76
FL53
CFWC455E
NU
12K
1%
C82
R60
0.1uF
C68
2.4K
R66
4.7K
R54
NC
20K
0.1uF
C72
39K
30pF
1%
C81
R63
TC7W04F
U52-2
6
2
R80
15K
Q51
PBR941
1
3
2
0.1uF
C90
680nH
L53
5V
5V
20K
L54
2%
1.2uH
R67
18pF
C52
5V
SHIELD
SH50
1
330
R55
0.1uF
C64
R72
390
R65
39K
3.3K
R62
100K
R61
U52-3
TC7W04F
3
5
C92
51
0.1uF
GND
2
GND1
4
OUT
3
1
IN
R90
1
GND2
4
IN
3
OUT 6
Y51
06B09
44.395MHz
FL51
MXF45
44.85MHz
CC1
2
CC2
5
GND1
3.9pF
C58
C91
10uF
R81
12K
R75
1
0.1uF
C57
RSSI_FEED
VCC
6
455KHz
Y70
45B02
3
2
12
MIXOUT
20
4
OSCIN
OSCOUT
3
QUADIN
10
RFIN
1
2
RFIN_DEC
RSSIOUT
5
9
15
IFAMPIN
18
IFAMPOUT
16
19
IFAMP_DEC1
IFAMP_DEC2
17
LIMIN
14
11
LIMOUT
LIM_DEC1
13
LIM_DEC2
U51
SA616
8
AUDIOOUT
AUDIO_FEED
7
GND
8.2K
1%
R77
BW_SEL
5V
IF_IN
RSSI
DEMOD
Figure 12-17. UHF (438-470 MHz) Receiver Back End Schematic Diagram (8486348Z09-A)