Figure 8-67. Automatic Level Control Circuit - Motorola APX 3000 Detailed Service Manual

8-122
DC_RAW_B+
IN
DC_LIN_5V
IN
DC_LIN_3V
IN
DIG_CTRL_ATTH
IN
DIG_CTRL_I_LIMIT
IN
R1171M11
ANA_CTRL_ISET
0
IN
R1160M11
C1169M11
330PF 12K
IN
R1202M11 DC_LIN_1_875V_D
0 DC_LIN_5V
DC_LIN_1_85 IN
U1137M11
SN74LVC2T45
D2
DIR
DIG_SPI_CLK B2 B1
C1163M11 IN B1 A1
C2 C1
B2
330PF A2
ANA_CTRL_VSET
IN
C1168M11 DC_LIN_5VREF
C1164M11
330PF 330PF
R1101M11 ADDED FOR DEFAULT
10K
HIGH
DC_LIN_5V
DC_LIN_1_875V_D
U1138M11
SN74LVC2T45
DIG_DATA_SPI_MOSI
IN D2
DIR
B2 B1
B1 A1
C2 C1
B2
A2
DIG_CTRL_TX_INH
GND
IN
C1171M11
C1170M11
330PF
330PF
DIG_DMCS U1147M11
IN
U1146M11 74LVC1G08YZP
74LVC1G32YZP A1
A1 C2
C1166M11
C2 B1
330PF B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
C1167M11
330PF
U1147M11
VCC VCC
74LVC1G08YZP
GND GND
U1146M11
74LVC1G32YZP
DC_LIN_5V
R1126M11
C1156M11
11K
330PF
DC_LIN_5V
C1106M11
.01UF
3
4
2 1
U1148M11
LPV321M7X
U1103M11
LM50 R1127M11
20K
R1128M11
10K

Figure 8-67. Automatic Level Control Circuit

U1150M11
DC_LIN_5VREF
LT1790
6
4 VIN VOUT
SW_B+ IN
3
DNC1
NC
5 DNC2
NC
C1160M11
C1161M11
GND1
.1UF
1UF
DC_LIN_5V
R1103M11
E1101M11
.02
1 2
DC_LIN_5V
DC_LIN_5V
R1169M11
3
340K
U1144M11
1
TS5A3159
DC_LIN_5V NC
1 NO
R1170M11
6 COM 4
IN
80.6K
5 V_POS 3
NC
GND
C1103M11
.01UF
R1175M11
R1141M11
0
510K
VPOS
3 1
VINPOS
4
VINNEG
INA138 GND R1108M11
U1101M11 68.1K
DC_LIN_5V DAC_C
C1108M11
.047UF
R1110M11
3
4 10K R1158M11
1 100K DNP
U1141M11
LPV321M7X
U1104M11
LPV321M7X
3
R1172M11
4.7K
1
C1137M11 C1138M11
.01UF .01UF
RVS
COUPLER
FWD
C1125M11
R1114M11
8.2PF
C1142M11
L1101M11
1000PF
33NH
C1104M11
R1106M11 R1168M11
100
56.2 5.6PF
DC_LIN_5V
DNP
U1112M11
HMC468LP3E
13 V1
NC1
DC_LIN_5V 14
V2
NC2
C1116M11 15 V3
NC3
.1UF
NC4
2 RF1
U1125M11 NC5
11 RF2
NC6
AD5624R
NC7
5 ACG1
7 SCLK 1 6 ACG2
VOUTA
6 2
SYNC VOUTB 7 ACG3
8 DIN VOUTC 4
R1122M11
10 VREFIN_VREFOUT 5 GND
C1117M11
75K
VOUTD
3300PF
CTGND C1126M11
DAC_C
1000PF
TX_INH
DC_LIN_1_875V_D
DC_LIN_5V
U1139M11
SN74LVC2T45
C1128M11
D2
DIR DC_LIN_5V
B2 B1 TXH_5V .01UF
B1
A1
C2 C1
B2 A2 R1178M11
IO49
10K
U1127M11
R1137M11
TS5A3159
10K
3 1 NO
4 6
IN COM
1
5 V_POS NC
TXH GND
C1140M11 DC_LIN_5V
OUT U1126M11
4700PF
LMV7275
R1182M11
10K
DC_LIN_5V
C1119M11
R1125M11
.01UF
27K
U1113M11
LPV321M7X
3
4
1
R1164M11
10K
U1121M11
R1165M11 M74VHC1GT86
1
200
4
DC_LIN_5V
2
C1120M11
.01UF
C1157M11 DC_LIN_5V
R1166M11 330PF
U1121M11
200
U1114M11 M74VHC1GT86
LPV321M7X
3
VCC
4
1 GND
R1167M11
10K
C1162M11
DC_LIN_5V 330PF
R1138M11
100K
4
DC_LIN_5V
R1142M11
U1143M11
U1129M11 100K
LPV321M7X
LMV841
R1144M11
R1146M11
R1139M11 3 100K
100K
4
100K
1
R1140M11 R1143M11 3
4
100K 100K
1
U1130M11
LMV841
R1145M11
100K
DC_LIN_3V
4
BAND
U1106M11
L1102M11 C1107M11
6.8NH 100PF VCC
1
RFIN
4
VM
3
VOS
R1107M11
R1112M11
68
C1105M11 51
DNP
5.6PF
R1115M11
100 100
C1118M11
.01UF DC_LIN_5V
C1129M11
.01UF
R1163M11 R1152M11
1
16K 10K
3 3
4 4
8 1
9 U1131M11
R1162M11
10 LMV7275
150K
12
DC_LIN_5V
C1111M11
.1UF
U1105M11
VPOS
AD8315
1 7
R1124M11 RFIN VAPC
2
51 ENBL
3 6
VSET NC NC
4
FLTR
5
R1180M11 COMM
0 GND
C1112M11 R1151M11
6800PF 15K
BAND BAND
C1123M11
.01UF
U1128M11
SN74LVC1G00
C1127M11 .1UF
DC_LIN_5V
A1
C2
3 B1
R1136M11 4
10K
4 1
3 DC_LIN_5V
U1142M11
R1135M11
LPV321M7X
0 C1124M11 U1128M11
SN74LVC1G00
4700PF
VCC
GND
FILT_RAW_B+
NTR1P02T1
Q1103M11
2 3
U1119M11 Q1101M11
74LVC1G08YZP MUN5212T
TXH_1
A1 3 R1102M11
IN
C2 1 22K
100K
B1
TX_INH
DC_LIN_3V
U1119M11
74LVC1G08YZP
VCC
C1159M11
GND
330PF
Schematics, Boards Overlays, and Parts Lists: Main Board Block: VHF (84012512001_A)
U1149M11
LTC5532
74LVC1G32YZP
TXH_1
A1
C2
OUT
5 B1
TX_SWI
R1117M11
27K
DC_LIN_3V
R1116M11
10K
VCC
U1149M11
GND 74LVC1G32YZP
L1117M11
1.65NH
RF_OUT
C1122M11
3PF
R1198M11
10K
C1130M11
DC_LIN_5V .01UF
U1132M11
R1174M11
NL17SZ74
10K
7 PA_OFFSET
PR
U1136M11
74LVC1G08YZP 2 5
D Q
A1
C2 1 3
CP Q*
B1
6
CLR R1176M11
U1133M11
DC_LIN_5V 1.82K
TS5A3159
R1154M11
1
NO 10K
6 IN COM 4 VC
5 V_POS 3
NC
VCC DC_LIN_5V GND
C1141M11
GND
C1172M11 .1UF
15PF
R1177M11
0
FILT_RAW_B+
OUT
RF_OUT
OUT
J102M11
CONN_P
5
1
2
3
4
VCTRL
OUT
ANA_RX_FE_FILT_VTUNE
OUT
TX_7V_1
OUT