Figure 8-8. Automatic Level Control Circuit - Motorola APX 1000 Detailed Service Manual

8-36
E1101
DC_RAW_B+
1
IN
DC_LIN_5V
IN
DC_LIN_3V
IN C1101
C1102
.01UF
1UF
DIG_CTRL_ATTH
IN
DIG_CTRL_I_LIMIT
IN
R1172
R1171
0 4.7K
ANA_CTRL_ISET
IN
R1160 C1137
12K .01UF
IN
DC_LIN_1_875V_D
DC_LIN_5V
IN
U1137
SN74LVC2T45
D2
DIG_SPI_CLK DIR
B2 B1
IN B1 A1
C2 C1
B2
A2
ANA_CTRL_VSET
IN
DC_LIN_5VREF
R1101 ADDED FOR DEFAULT
10K
HIGH
DC_LIN_5V
C1165
DC_LIN_1_875V_D
.1UF
U1138
SN74LVC2T45
DIG_DATA_SPI_MOSI
D2
IN DIR
B2 B1
B1 A1
C2 C1
B2 A2 TX_INH
DIG_CTRL_TX_INH
IN
DC_LIN_1_875V_D
DC_LIN_5V
U1139
DIG_DMCS SN74LVC2T45
U1147
IN
U1146 74LVC1G08YZP
A1
74LVC1G32YZP
DIR
A1 C2 B2
B1 A1
C2 B1 C2
B2
A2
B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
U1147 R1111
VCC VCC
74LVC1G08YZP 0
GND GND
U1146
74LVC1G32YZP
R1125
47K
R1126
22K
DC_LIN_5V
DC_LIN_5V
C1106
.01UF
R1165
200
3
POS
4
U1103 2 1
U1148
LM50
LPV321M7X
GND
R1127 R1166
20K 200
R1128
10K
LPV321M7X

Figure 8-8. Automatic Level Control Circuit

U1150
DC_LIN_5VREF
LT1790
4 VIN 6
SW_B+ IN VOUT
3 DNC1
NC
5
NC DNC2
C1160
C1161
.1UF
1UF
DC_LIN_5V
R1103
.02
2
DC_LIN_5V
DC_LIN_5V
R1169
3
340K
U1144
1
TS5A3159
DC_LIN_5V U1143
NC
1 NO LPV321M7X
R1170
6 4
IN COM
80.6K
5 V_POS 3
NC
C1103 GND
.01UF
R1175
R1141
0
510K
U1101
VPOS
INA138
3 1
VINPOS
4
VINNEG
R1108
GND
68.1K
C1139
DC_LIN_5V DAC_C
10PF
C1108
.047UF
R1110
3 10K
4
1
R1158
U1141
100K
LPV321M7X
DNP
3
4
1
U1104
LPV321M7X
C1135
C1138
.01UF
.01UF
DNP
R1104
R1105
100
100
RVS
COUPLER
FWD
C1125
8.2PF
L1101 C1142
33NH 1000PF
R1168 C1104
R1106
C1155 100 5.6PF C1118
56.2
5.6PF .01UF
DNP DC_LIN_5V
DNP
U1112
HMC468LP3E
13 1
V1
DC_LIN_5V NC1
14 V2 3
NC2
C1116 15 4
V3
NC3
.1UF 8
NC4
2 9
RF1
U1125 NC5
11 RF2 10
NC6
AD5624R 12
NC7
5 ACG1
7 1 6
SCLK VOUTA ACG2
6 SYNC 2 7 ACG3
VOUTB
8 4
DIN VOUTC
R1122
10 VREFIN_VREFOUT 5
75K C1117
VOUTD
3300PF
R1121
GND CTGND C1126
DAC_C
30.1K
1000PF
D2
C1128
TXH_5V DC_LIN_5V
B1
.01UF
C1
IO49
R1178
U1126
10K U1127
LMV7275
R1137
TS5A3159
10K
3 1 NO
4 6 4
IN
COM
1 5 V_POS 3
NC
TXH GND
DC_LIN_5V
C1140
OUT
4700PF
R1182
10K
DC_LIN_5V
C1119
.01UF
R1129
10K
DNP
3
4
1
U1113
LPV321M7X
R1164
10K
IN
U1121
M74VHC1GT86
1
4
DC_LIN_5V TX_INH
2
C1120
.01UF
DC_LIN_5V
R1130
10K
DNP U1121
3 VCC
4 M74VHC1GT86
1 GND
R1167
U1114 10K
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: VHF (84012320001 / PC000352A01)
DC_LIN_5V
R1138 R1142
100K 100K
4
DC_LIN_5V
U1129
R1144 R1146
LMV841
3
R1139 100K 100K
4
100K
1
U1130
LMV841
R1140 R1143 3
4
100K 100K
1
R1145
100K
DC_LIN_3V
C1110
C1113
330PF
.01UF
BAND
U1106
LTC5532
C1107
L1102
6.8NH 100PF
1
RFIN
4
VM
3
VOS
R1107 C1105 R1112
68 5.6PF 51
DNP
R1114 R1115
100 100
DC_LIN_5V
C1129
.01UF
R1163
R1152
U1136
16K
10K
3 74LVC1G08YZP
4 A1
1
B1
R1162 U1131
150K LMV7275
DC_LIN_5V
C1111
.1UF
U1105
VPOS AD8315
R1124 1 7
RFIN VAPC
51 2
ENBL
3 6
VSET NC NC
4
FLTR
5
R1180 COMM
0 C1112
GND R1151
6800PF 15K
BAND BAND
R1181
100K
DNP
C1123
.01UF
U1128
SN74LVC1G00
C1127 .1UF
DC_LIN_5V
A1
C2
3 B1
R1136
R1135
4
0 10K
1
U1142
DC_LIN_5V
LPV321M7X
C1124
4700PF
U1128
VCC
SN74LVC1G00
GND
FILT_RAW_B+
NTR1P02T1
Q1103
2 3
Q1101
U1119
MUN5212T
74LVC1G08YZP
TXH_1
A1 3 R1102
C2 1 22K
100K
B1
DC_LIN_3V
U1119
VCC
74LVC1G08YZP
GND
FILT_RAW_B+
U1149
74LVC1G32YZP
TXH_1
A1
C2
OUT
5 B1
TX_SWI
R1117
16K
DC_LIN_3V
U1149
R1116 74LVC1G32YZP
10K
VCC
GND
L1117
1.65NH
C1122
2.7PF
C1130
.01UF
DC_LIN_5V
R1174
10K
PA_OFFSET
7
PR
2 5
D Q
C2 1 3
CP Q*
6
CLR
R1176
U1133
DC_LIN_5V 1.82K
U1132
TS5A3159
R1154
NL17SZ74
1 NO
U1136 10K
MODE_SELECT 6 4 VC
IN
74LVC1G08YZP COM
5 V_POS 3
NC
GND
VCC DC_LIN_5V
C1141
GND .1UF
R1177
0
ANA_RX_FE_FILT_VTUNE
OUT
RF_OUT
OUT
R1198
10K
VCTRL
OUT
OUT
TX_7V_1 OUT