Motorola CP150TM User Manual
Page 221
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)
12-39
6880309N62-C
June, 2005
280 mV (RF)
500 mV (RF)
100 mV RMS (25 kHz)
50 mV RMS (12.5 kHz)
167 mV (RF)
0.62 V
1.23 V
17.5 mV (RF)
167 mV (RF)
2.14 V
108 mV (RF)
128 mV (RF)
0 V (25 kHz)
1 V (12.5 kHz)
0 V (25 kHz)
2.8 V (12.5 kHz)
0.33 V
1 V (25 kHz)
0 V (12.5 kHz)
2.8 V (25 kHz)
0 V (12.5 kHz)
5 V (25 kHz)
0 V (12.5 kHz)
0 V for 25 kHz
5 V for 12.5 kHz
370 mV (RF)
500 mV (RF)
5V for 25 kHz
0V for 12.5 kHz
3.39 V
3.05 V
0.74 V
1.5 V
2.1V When -47 dBm @ antenna
482 mV (RF)
296 mV (RF)
R81
1K
C65
0.1uF
12K
R75
0.1uF
C57
20K
R64
33pF
1%
C81
IF_IN
C70
130pF
4
OSCIN
OSCOUT
3
QUADIN
10
RFIN
1
2
RFIN_DEC
RSSIOUT
5
9
RSSI_FEED
VCC
6
IFAMPOUT
16
19
IFAMP_DEC1
IFAMP_DEC2
17
LIMIN
14
11
LIMOUT
LIM_DEC1
13
LIM_DEC2
12
MIXOUT
20
U51
SA616
8
AUDIOOUT
AUDIO_FEED
7
GND
15
IFAMPIN
18
R78
680
8.2K
1%
R77
IF_BAND_SEL
20K
5V
12K
1%
R76
R67
68pF
C68
C61
R54
0.1uF
MMBT3904
Q70
1
3
2
5.1K
1%
22pF
C80
0.1uF
C72
D52
1
2
3
FL52
FLTR
9180468V04
GND
3
1 IN
2
OUT
3.9pF
C58
TC7W04F
U52-1
1
7
FL53
CFWC455E
3
GND1
GND2
4
1 IN
2
OUT
C69
0.1uF
12K
R52
C73
4700pF
CFWC455G
FL54
3
GND1
4
GND2
IN
1
OUT 2
C55
0.1uF
C62
5V
C56
0.1uF
0.1uF
0.1uF
C60
0.1uF
C67
33K
R53
2.4K
R60
C66
0.1uF
C53
1.1%
9.1pF
8
VCC
IF_RSSI
10uF
U52-4
PWR_GND
4
GND
C91
330
R55
0.1uF
C64
R72
390
R65
39K
3.3K
R62
100K
R61
U52-3
TC7W04F
3
5
IF_5V
0.1uF
C92
47pF
C74
5
GND1
1
GND2
4
IN
3
OUT 6
FL51
MXF45
44.85MHz
CC1
2
CC2
36pF
C82
20K
R66
1.8K
R73
1.2K
R74
CR51
1
3
2
IF_DEMOD
C71
0.1uF
1.6K
R91
2
R80
5.1K
Q51
PBR941
1
3
3.6pF
C93
NU
0.1uF
C90
C63
0.1uF
NU
120pF
L53
R82
L54
2%
1.2uH
C52
L81
1uH
4.7K
5V
22pF
1
R57
R90
51
SHIELD
SH52
GND
2
GND1
4
OUT
3
1
IN
1
2
3
5V
Y51
TSS2_44_395MHZ
44.395MHz
D51
2
1
R63
39K
455KHz
Y70
45B02
3
NC
2.7pF
C59
SHIELD
SH50
1
5V
TC7W04F
U52-2
6
2
BW_SEL
5V
IF_IN
RSSI
DEMOD
Figure 12-29. UHF (438-470 MHz) Receiver Back End Schematic Diagram (8486348Z13-C)