Figure 8-126.Automatic Level Control Circuit - Motorola APX 1000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: 700 – 800 MHz (84012266001 / PC000351A01)
DC_RAW_B+
IN
DC_LIN_5V
IN
DC_LIN_3V
IN
C1101M11
.01UF
DIG_CTRL_ATTH
IN
DIG_CTRL_I_LIMIT
IN
R1171M11
ANA_CTRL_ISET
IN
IN
DC_LIN_5V
DC_LIN_1_875V_D
IN
U1137M11
SN74LVC2T45
D2
DIR
DIG_SPI_CLK B2 B1
IN B1 A1
B2 A2
C2 C1
GND
IN
ANA_CTRL_VSET
DC_LIN_5VREF
ADDED FOR DEFAULT
HIGH
DC_LIN_5V
DC_LIN_1_875V_D
U1138M11
SN74LVC2T45
DIG_DATA_SPI_MOSI
IN DIR
B2 B1 A1
B2 A2
C2
DIG_CTRL_TX_INH
GND
IN
U1147M11
DIG_DMCS
IN
74LVC1G08YZP
A1
C2
A1
U1146M11
C2 B1
74LVC1G32YZP
B1
DIG_GPIO49
IN
DC_LIN_1_875V_D
U1146M11 VCC VCC
U1147M11
74LVC1G32YZP
GND GND 74LVC1G08YZP
R1125M11
R1126M11
DC_LIN_5V
C1106M11
DC_LIN_5V
.01UF
3
POS
U1103M11 2 1
VOUT
LM50
GND
R1127M11
R1128M11
U1150M11
DC_LIN_5VREF
LT1790
IN
4 6
VINVOUT
SW_B+
3 DNC1
NC
DNC2
NC C1161M11
C1160M11
5
GND1
1UF
.1UF
R1103M11
E1101M11
.02
1 2
DC_LIN_5V
DC_LIN_5V
R1169M11
340K
U1144M11
DC_LIN_5V
NC
1 NO
COM
6 IN 4
R1170M11
5 V_POS NC 3
80.6K
C1103M11 GND
.01UF
R1175M11
R1141M11 TS5A3159
U1101M11 INA138 0
510K
VPOS
OUT
3
VINPOS
VINNEG 1
4 R1108M11
GND
68.1K
DC_LIN_5V DAC_C
C1108M11
3
4 R1110M11 .01UF
1
10K
U1141M11 100K
DNP
LPV321M7X
3
R1172M11
1
0 4.7K
DNP
C1137M11 C1138M11
C1135M11
.022UF .022UF .01UF
RVS
COUPLER
FWD
C1125M11
6.8PF
L1101M11
C1142M11
33NH
1000PF
100
C1104M11
R1168M11
C1155M11 5.6PF
DC_LIN_5V
DNP
5.6PF
DNP
U1112M11
HMC468LP3E
13 V1
DC_LIN_5V 14 V2 NC1
NC2
15 V3
NC3
C1116M11
2 RF1 NC4
U1125M11 NC5
.1UF 11 RF2
AD5624R NC6
NC7
VDD 5 ACG1
VOUTA
7 SCLK 1 6 ACG2
6 SYNC VOUTB 2 7
ACG3
VOUTC
8 DIN 4
R1122M11
10 VOUTD 5 GND
VREFIN_VREFOUT 75K
C1117M11
GND CTGND
DAC_C 3300PF
D2
B1
TX_INH
C1
DC_LIN_1_875V_D
DC_LIN_5V
U1139M11
SN74LVC2T45
D2
DIR
B2 B1 TXH_5V DC_LIN_5V C1128M11
B1 A1
B2 A2
.01UF
C2 IO49
C1
GND U1126M11
U1127M11
LMV7275
TS5A3159
R1137M11
3 1
10K NO
4 6 IN
1
5 V_POS
TXH
DC_LIN_5V
OUT C1140M11
4700PF
R1111M11
0
DC_LIN_5V
C1119M11
.01UF
LPV321M7X
24K U1113M11
R1129M11
10K
3
4 DNP
1
11K
R1164M11
10K
U1121M11
R1165M11
200 M74VHC1GT86
1
4
4 DC_LIN_5V 2
C1120M11
LPV321M7X
.01UF
U1148M11
DC_LIN_5V
R1166M11
U1121M11
200 R1130M11
M74VHC1GT86
20K
10K
3
DNP VCC
4
1 GND
U1114M11 R1167M11
10K
LPV321M7X 10K
DC_LIN_5V
DC_LIN_5V
R1138M11
R1142M11
3
100K
4 100K
DC_LIN_5V
1
U1143M11
LPV321M7X
U1129M11
R1144M11
LMV841 R1146M11
R1139M11 3
100K
100K
4
100K
1
U1130M11
3 LMV841
R1143M11
4
100K
1
R1140M11
100K
R1145M11
100K
R1158M11
U1104M11
LPV321M7X
DC_LIN_3V
4
BAND
L1102M11 C1107M11
6.8NH 100PF
1
RFIN
4
VM
3
VOS
R1107M11
68
R1114M11
100
C1118M11
DC_LIN_5V
.01UF
C1129M11
.01UF
R1163M11
1 10K
3 3
4
4
8 1
R1162M11
9
U1131M11
10 150K
LMV7275
12
DC_LIN_5V
C1111M11
.1UF
U1105M11
C1126M11 AD8315
VPOS
1000PF
7
R1124M11 1 RFIN
2
51 ENBL
3 6
VSET NC
4 FLTR
NC
R1180M11 5
COMM
0
GND
C1112M11 R1151M11
10K
R1181M11 .01UF
100K
DNP
BAND BAND
C1123M11
.01UF U1128M11
SN74LVC1G00
C1127M11 .1UF
DC_LIN_5V A1
C2
3 B1
4
COM R1136M11
4 1
3 LPV321M7X DC_LIN_5V
NC
10K
R1135M11 U1142M11
GND 0
C1124M11
4700PF
VCC U1128M11
SN74LVC1G00
GND
R1182M11
10K
FILT_RAW_B+
NTR1P02T1
Q1103M11
2 3
Q1101M11
U1119M11
MUN5212T
74LVC1G08YZP
IN
TXH_1 A1 3
22K
C2 1
B1
TX_INH
DC_LIN_3V
VCC U1119M11
74LVC1G08YZP
GND
U1106M11
U1149M11
LTC5532
74LVC1G32YZP
TXH_1
VCC A1
C2
OUT
5 B1
TX_SWI
VOUT
GND
R1117M11
75K
DC_LIN_3V
R1116M11
U1149M11
VCC
10K
74LVC1G32YZP
GND
C1130M11
DC_LIN_5V .01UF
R1174M11
U1132M11
PA_OFFSET 10K
U1136M11 7
PR VCC
74LVC1G08YZP
2 5
D Q
A1
C2 1 3
CP Q*
B1
6 R1176M11 U1133M11
CLR
GND 1K TS5A3159
DC_LIN_5V
NL17SZ74 MODE_SELECT R1154M11
1
NO VC 10K
4
6 IN COM
5 NC 3
V_POS
VCC
C1141M11
DC_LIN_5V GND
GND .47UF
R1177M11
0
ANA_RX_FE_FILT_VTUNE
Figure 8-126. Automatic Level Control Circuit
8-271
FILT_RAW_B+
OUT
L1117M11
2.55NH
RF_OUT
OUT
C1122M11
2.2PF
R1198M11
10K
VCTRL
OUT
OUT
OUT
TX_7V_1