Figure 8-8. Nud7120A Transmitter And Automatic Level Control Circuits - Motorola APX 5000 Service Manual

8-10
DC_REF_B+
IN
DC_RAW_B+
IN
DC_LIN_5V
IN
C1101 C1102
DC_LIN_3V
IN
.01UF 1UF
DC_LIN_5V
DC_LIN_3.3V
R1183
1K
R1184
2.2K
DIG_CTRL_I_LIMIT
IN
R1171 R1172
ANA_CTRL_ISET 0 4.7K
IN
R1160 C1137
12K .022UF
DC_LIN_3.3V
HF_OUT_1
2 TX1
IN
4
TX2
21 TX3
23
TX4
V1_V2
15 V1
14
V2
V3
13 V3
1 NC1
3 NC2
5 NC3
7 NC4
9
NC5
10
DC_LIN_1_875V_D
DC_LIN_5V
IN
U1137
SN74LVC2T45
D2
DIR
DIG_SPI_CLK B2 B1
IN B1
A1
C2 C1
B2 A2
ANA_CTRL_VSET
IN
DC_LIN_5VREF
10
DC_LIN_5V
DC_LIN_1_875V_D
C1165
U1138
.1UF
SN74LVC2T45
DIG_DATA_SPI_MOSI D2
IN
DIR
B2 B1
B1 A1 TX_INH
C2 C1
B2
A2
DIG_CTRL_TX_INH
IN
DC_LIN_1_875V_D
DC_LIN_5V
U1139
DIG_DMCS SN74LVC2T45
U1147
IN
U1146 74LVC1G08YZP
74LVC1G32YZP A1
DIR
A1 C2 B2
B1 A1
C2 B1 C2
B2 A2
B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
TXH
VCC VCC
U1147
74LVC1G08YZP
GND GND
U1146
74LVC1G32YZP
R1125
100K
3
1
R1126
39K
DC_LIN_5V
DC_LIN_5V
C1106
.01UF
R1165
200
3
4
2 1
VOUT
U1148
LPV321M7X
U1103
R1127 R1166
LM50
51K 200
3
1
R1128
22K
LPV321M7X

Figure 8-8. NUD7120A Transmitter and Automatic Level Control Circuits

U1150
DC_LIN_5VREF
LT1790
4 VIN 6
VOUT
NC
3
DNC1
5
C1160 DNC2 C1161
.1UF
1UF
NC
R1103 DC_LIN_5V
.02 E1101
1 2
DC_LIN_5V
DC_LIN_5V
R1169
3
340K
4
U1144 U1143
1
TS5A3159
DC_LIN_5V NC LPV321M7X
1 NO
6 4 R1170
IN COM
100K
5 V_POS NC 3
C1103 GND
.01UF
R1175
R1141
0
510K
U1101
VPOS
INA138
3 1
VINPOS
4
VINNEG
R1108
GND
C1139 82K
10PF DC_LIN_5V DAC_C
C1108
.068UF
R1110
3
10K
4
1
U1141 R1158
LPV321M7X 100K
DNP
3
4
1
U1104
C1135 LPV321M7X
C1138 .01UF
.022UF DNP
R1104 R1105
100 100
U1102
PE42650
COUPLER_REV
8
RX L1108
11
RES NC
5.45NH COUPLER_THROUGH
ANT 28
COUPLER_FWD
NC7 16
NC
17
NC8
19
NC9
20 C1125
NC10
22
NC11 15PF R1114
24
NC12 DNP 100
26
NC13 L1101 C1142
27
NC14 47NH 1000PF
29
NC15
NC16 30
31
NC17
R1168 C1104
R1106
0 5.1PF C1118
27
DNP DC_LIN_5V
.01UF
U1112
HMC468LP3E
13 1
V1
DC_LIN_5V NC1
14 V2 3
NC2
C1116 15 V3 4
NC3 8
.1UF
NC4
2 RF1 9
NC5
11 10
U1125 RF2
NC6
AD5624R 12
NC7
5
ACG1
7 SCLK 1 6 ACG2
VOUTA
6 2 7
SYNC ACG3
VOUTB
8 4
DIN VOUTC 5 R1122 GND
VREFIN_
VOUTD 75K
VREFOUT
R1121
GND CTGND C1126
DAC_C 30K
1000PF
C1128
D2
B1 TXH_5V DC_LIN_5V .01UF
C1 IO49
R1178
10K U1127
U1126 R1137
TS5A3159
LMV7275 10K R1135
3 1
NO 0
4 6 IN COM 4
1 5 V_POS NC 3
GND
C1140 DC_LIN_5V
OUT
4700PF
R1182
10K
DC_LIN_5V
C1119
.01UF
R1129
10K
DNP
4
U1113
LPV321M7X
R1164
10K IN
U1121
M74VHC1GT86
1
4
DC_LIN_5V
2 TX_INH
C1120
.01UF
DC_LIN_5V
R1130
10K
DNP VCC U1121
4 M74VHC1GT86
GND
R1167
U1114
10K
DC_LIN_5V
R1138 R1142
100K 100K
DC_LIN_5V
U1129
LMV841 R1144 R1146
3
100K
100K
4
1
U1130
R1139
LMV841
100K
R1140 R1143 3
4
100K 100K
1
TXH_2
R1145
100K
DC_LIN_3V
C1113
C1110
100PF .01UF
U1106
C1107 LTC5532
L1102
100PF
6.8NH VCC
1
RFIN
4 5
VM
3
VOS
R1112
R1107 C1105
51
68 5.6PF
DNP
R1115
100
DC_LIN_5V
DC_LIN_5V
C1129
.01UF
R1163 R1152
U1136
10K 10K
74LVC1G08YZP
3
4 A1
1
R1162 U1131 B1
150K LMV7275
DC_LIN_5V
DC_LIN_5V
C1111
.1UF
U1105
AD8315
R1124 1 VPOS 6
NC
51 2 RFIN NC 7
ENBL VAPC
3 4
VSET FLTR
R1180
COMM
0 R1151
C1112
6800PF 10K
R1181
100K
DNP
U1128
SN74LVC1G00
C1127 .1UF
C1123
A1
.01UF DC_LIN_5V
C2
3 B1
R1136
4
10K
1
U1142 DC_LIN_5V
LPV321M7X
C1124
4700PF
VCC U1128
SN74LVC1G00
GND
FILT_RAW_B+
Q1101
U1119
MUN5212T TX_7V
74LVC1G08YZP 2 3
OUT
TXH_1 A1 3
Q1103
22K
C2 1
NTR1P02T1
B1 R1102 DIG_CTRL_ATTH
IN
100K
DC_LIN_3V
U1119
VCC
74LVC1G08YZP
GND
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: VHF
TXH_2
IN
TXH_1
V3
V1_V2
U1116
74LVC1G32YZP
A1
C2
U1118
U1117
B1
74LVC1G32YZP NC7WZ04
A1
DC_LIN_3V C2 1 6
B1
DC_LIN_3V
DC_LIN_3V
U1116
VCC
74LVC1G32YZP
GND
U1117
VCC
VCC U1118
NC7WZ04
74LVC1G32YZP GND
GND
R1117
75K
R1116
10K
C1130
.01UF
U1132
NL17SZ74 R1174
10K
PA_OFFSET
7
PR
2 5
D Q
C2 1 3
CP Q*
6
CLR
R1176
1K
1
NO
6 IN COM 4 VC R1154
5 3 10K
V_POS NC
VCC DC_LIN_5V GND
C1141
U1133
GND .1UF
TS5A3159
R1177
0
R1186
0
RF_RX_DIPLEX_OUT
DNP
C1122 C1149
L1104
2.2PF 0 100PF
L1103 C1132
4.7NH
6PF
DNP 2
GND
L1114
U1149
C1152
11NH
AT267
330PF
C1150
1.2PF
U1117
NC7WZ04
3 4
ANA_RX_FE_FILT_VTUNE
FILT_RAW_B+
OUT
C1162
1UF
RF_ANT
OUT
RF_AUX
OUT
DIG_CTRL_RMTH
IN
VCONTROL
OUT
RX_IN
OUT
OUT