Motorola CP040 - Page 322

3-12 UHF2 PCB 8486348Z13-C Schematic Diagrams
UHF2 (438-470 MHz) Transmitter and Power Control Schematic Diagram PCB No. 8486348Z13-C
3.3 V (Tx)
7.5 V (Rx)
0 V (Tx)
4.4 V (Hi)
3.6 V (Lo) (TYP, Tx)
0 V (Rx)
6.8 V (Tx)
2.6 V (Hi)
1.8 V (Lo) (TYP, Tx)
2.73 V (Hi)
2.32 V (Lo) (TYP, Tx)
+11.7 dBm
860 mV (RF)
1.38 V (Tx)
0.65 V (Tx)
+18.7 dBm
1930 mV (RF)
+18.5 dBm
1900mV (RF)
DO NOT MEASURE
0.9 V (Tx)
0 V (Rx)
7.5 V
0 V (Rx)
R152
1%
100K
820
R102
390pF
C113
390pF
C171
C170
390pF
R150
0.1
390pF
R107
NU
C103
C109
0.1uF
390pF
C158
390pF
PA_5T
C154
C106
2
G1
5
G2
4
S1
3
S2
1
T1
6
T2
390pF
J140
U150-2
LM2904
6
5
7
8
4
C104
10pF
PA_PWR_SET
VR110
C157
MM3Z3V9T1
3.9V
R100
NC
0.1uF
C152
820
L110
390pF
C155
0.1uF
220nH
390pF
C123
3.9pF
R158
C121
30.54nH
1.5K
390pF
C124
L141
5
23
64
1
Q170
EMB1
0
C137
220pF
0.1uF
C116
2.7K
R105
330
R156
RFOUT
3
VDD
2
VGG
L132
17.02nH
RA07M4452M_UHF
U110
5
GND
1
RFIN
4
6.8pF
C134
C112
0.1uF
SH100
SHIELD
1
10K
R162
L102
R106
4.7K
18
3.6nH
R104
220nH
C100
390pF
Q171
L100
C159
NC
PA_USWB+
390pF
5.1nH
L103
PA_TX_ENA
1
TP150
C105
3.9pF
NC
PA_TX_INJ
2
3
1
8
4
57R01
U151
220nH
L101
U150-1
LM2904
R154
R153
100K
1%
NU
100K
1%
C133
0.47uF
C153
390pF
C108
R121
150
390pF
C111
C135
NU
TAB4
4
0.1uF
C101
M140
ANTENNA_NUT
TAB1
1
TAB2
2
TAB3
3
C156
C131
NU
.01uF
17.02nH
L131
PA_RX_OUT
R103
R157
2.2K
3K
R101
5.6
C122
Q150
1
3
2
L120
220nH
C115
1uF
D121
MA4PH261
150
R120
39
R151
15nH
L121
R155
1%
100K
390pF
C117
4.3pF
C136
680
R110
C102
0.1uF
D120
MA4PH261
390pF
C151
390pF
C172
L140
NU
C141
390pF
43pF
NU
C150
5.1pF
C120
2
1
C130
BFG540W
Q100
2K
R111
6.8pF
C132
NU
C107
L130
17.02nH
390pF
C114
USWB+
C173
390pF
TX_INJ
5T
PWR_SET
TX_ENA
RX_OUT