Figure 8-48. Automatic Level Control Circuit - Motorola APX 1000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1 (84012313002 / PC000353A01)
DC_RAW_B+
IN
DC_LIN_5V
IN
C1101
DC_LIN_3V
IN .01UF
DIG_CTRL_ATTH
IN
DIG_CTRL_I_LIMIT
IN
R1171
ANA_CTRL_ISET 0
IN
R1160 C1137
12K
.022UF
IN
DC_LIN_1_875V_D DC_LIN_5V
IN
U1137
SN74LVC2T45
DIR D2
DIG_SPI_CLK
B2 B1
IN B1 A1
C1
C2 B2 A2
ANA_CTRL_VSET
IN
DC_LIN_5VREF
R1101 ADDED FOR DEFAULT
10K
HIGH C1165
DC_LIN_5V
.1UF
DC_LIN_1_875V_D
U1138
SN74LVC2T45
DIG_DATA_SPI_MOSI
D2
IN DIR
B2 B1
B1 TX_INH
A1
C2 C1
B2 A2
DIG_CTRL_TX_INH
IN
DC_LIN_1_875V_D
DIG_DMCS U1147
IN
U1146
74LVC1G08YZP
74LVC1G32YZP A1
A1 C2 B2
B1
C2 B1 C2
B2
B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
R1111
0
U1147
VCC VCC
74LVC1G08YZP
GND GND
U1146
74LVC1G32YZP
R1125
47K
R1126
20K
DC_LIN_5V
C1106 DC_LIN_5V
.01UF
3
POS
4
U1103 2 1
LM50 U1148
LPV321M7X
GND
R1127
20K
R1128
10K
U1150
DC_LIN_5VREF
LT1790
4 6
SW_B+ IN VIN VOUT
3
NC DNC1
5
C1160 NC DNC2
C1161
.1UF
1UF
DC_LIN_5V
R1103
E1101
.02
1 2
DC_LIN_5V
DC_LIN_5V
C1102
R1169
3
1UF
340K
U1144
1
TS5A3159
DC_LIN_5V NC
1
NO
R1170
6 IN 4
COM
5 3 80.6K
V_POS NC
C1103 GND
.01UF
R1175
U1101 R1141
0
INA138 510K
VPOS
3 1
VINPOS
4
VINNEG
R1108
GND
68.1K
C1139
DC_LIN_5V
10PF DAC_C
C1108
.068UF
R1110
3
10K
4
1
U1141 R1158
100K DNP
LPV321M7X
3
R1172
4
4.7K
1
U1104
LPV321M7X
C1135
C1138
.01UF
.022UF DNP
R1104 R1105
100 100
RVS
COUPLER
FWD
C1125
8.2PF
C1142
L1101
33NH 1000PF
R1168
C1104
R1106
C1155 100 5.6PF C1118
6.8 DC_LIN_5V
5.6PF DNP .01UF
DNP
U1112
HMC468LP3E
13 V1 1
DC_LIN_5V NC1
14 3
V2 NC2
C1116 15 V3 4
NC3
8
.1UF NC4
2 RF1 9
NC5
U1125 11 RF2 10
NC6
AD5624R 12
NC7
5 ACG1
1
7 SCLK VOUTA 6 ACG2
6 SYNC VOUTB 2 7 ACG3
8 4
DIN VOUTC
R1122 C1117
10 VREFIN_VREFOUT 5 GND
75K
VOUTD
3300PF
R1121
GND CTGND C1126
DAC_C 30.1K
1000PF
DC_LIN_5V
U1139
SN74LVC2T45
C1128
D2
DIR DC_LIN_5V .01UF
B1 TXH_5V
A1
C1
A2
IO49
R1178
10K U1127
U1126
R1137
TS5A3159
LMV7275
10K
3 1 NO
4 6 4
IN COM
1 5 V_POS NC 3
GND
TXH
C1140 DC_LIN_5V
OUT
4700PF
R1182
10K
DC_LIN_5V
C1119
.01UF
R1129
10K
3
DNP
4
1
U1113
LPV321M7X
R1164
10K
IN
U1121
R1165 M74VHC1GT86
200 1
4
TX_INH
DC_LIN_5V 2
C1120
.01UF
DC_LIN_5V
R1166
R1130
200
10K
U1121
3 DNP VCC
4 M74VHC1GT86
1 GND
R1167
U1114
10K
LPV321M7X
DC_LIN_5V
R1138 R1142
100K
100K
4
DC_LIN_5V
U1143
LPV321M7X
U1129
R1144 R1146
LMV841
R1139 3 100K
100K
4
100K
1
U1130
LMV841
R1140 R1143 3
100K 100K 4
1
R1145
100K
DC_LIN_3V
C1113
C1110
.01UF
100PF
U1106
BAND LTC5532
L1102
VCC
6.8NH
1
RFIN
4
VM VOUT
C1107 3
VOS
R1107 C1105 R1112 100PF
68 51 GND
5.6PF
DNP
R1114 R1115
100 100
DC_LIN_5V
C1129
.01UF
R1163
R1152
10K
10K
3
4 A1
1
R1162 U1131 B1
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
R1180 5
COMM
0
GND
C1112 R1151
6800PF 15K
R1181
100K
BAND BAND
DNP
C1123
.01UF
U1128
C1127 SN74LVC1G00
DC_LIN_5V
A1
.1UF
C2
3 B1
R1136
R1135
4
10K
0 1
U1142
DC_LIN_5V
LPV321M7X
C1124
4700PF U1128
VCC
SN74LVC1G00
GND
FILT_RAW_B+
Q1103
NTR1P02T1
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+
TXH_1 U1149
74LVC1G32YZP
A1
C2
OUT
5 B1
TX_SWI
R1117
75K
DC_LIN_3V
R1116
10K U1149
VCC
74LVC1G32YZP
GND
L1117
1.65NH
C1122
2.7PF
C1130
DC_LIN_5V .01UF
R1174
10K
7 PA_OFFSET
PR
U1136
74LVC1G08YZP 2 5
D
Q
C2 1 3
CP
Q*
6
CLR
R1176 U1133
DC_LIN_5V 1K
U1132
TS5A3159
R1154
NL17SZ74
1 NO
10K
MODE_SELECT 6 4 VC
IN COM
5 V_POS NC 3
VCC DC_LIN_5V GND
C1141
GND .1UF
R1177
0
ANA_RX_FE_FILT_VTUNE

Figure 8-48. Automatic Level Control Circuit

8-115
OUT
RF_OUT
OUT
R1198
10K
VCTRL
OUT
OUT
TX_7V_1
OUT