Motorola APX 2000 - Page 881

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: VHF (84012618001) 8-35
Figure 8-7. Automatic Level Control Circuit
MAKO RAMP
R1210M11 R1214M11
C1217M11
C1211M11R1209M11
ANA_CTRL_ISET
IN
C1218M11
C1216M11
R1298M11
R1299M11
DIG_CTRL_I_LIMIT
DIG_CTRL_ATTH
IN
IN
DC_RAW_B+
DC_LIN_3V
DC_LIN_5V
IN
IN
IN
C1213M11
C1212M11 C1209M11
R1226M11
C1237M11
C1230M11
U1232M11
C1210M11
E1219M11
SW_B+
DC_LIN_5VREF
IN
NC
NC
DNC2
DNC1
GND1
VIN
GND2
VOUT
C1214M11
HIGH
ADDED FOR DEFAULT
R1101M11
DIG_SPI_CLK
ANA_CTRL_VSET
DC_LIN_1_875V_D
IN
IN
IN
IN
DIG_CTRL_TX_INH
DIG_DATA_SPI_MOSI
IN
IN
DELAY
U1208M11
R1213M11
R1212M11
U1209M11
U1209M11
R1204M11
C1206M11
DC_LIN_1_875V_D
TX_INH
DC_LIN_5V
DC_LIN_5V
DIR
B2
B1
GND
VCCB VCCA
A2
A1
GND
VCC
C1225M11
R1219M11
R1201M11
DC_LIN_1_875V_D
PLACE
PIN 1
PLACE
PIN 5
NEAR
NEAR
R1282M11
R1211M11
C1229M11
C1215M11
U1201M11
DC_LIN_5V
DC_LIN_5VREF
VLOGIC
SDIN
GAIN
RSTSEL
SYNC
LDAC
RESET
SCLK
GND
VDD
EPAD
NC2
NC1
SDO
VOUTB
VOUTA
VREF
U1217M11
DC_LIN_5V
DC_LIN_1_875V_D
DIR
B2
B1
GND
VCCB
VCCA
A2
A1
C1208M11
R1228M11
C1231M11
R1218M11
U1211M11
R1223M11
IO49
TXH
TXH_5V
OUT
GND
VCC
U1205M11
DIG_GPIO49
DIG_DMCS
DC_LIN_1_875V_D
GND
VCC
IN
IN
U1211M11
U1205M11
RX FE TUNE
R1232M11
R1238M11
R1243M11
C1233M11
R1240M11
DAC SCALER
POWER TUNE
R1252M11
R1288M11
R1244M11
R1245M11
R1242M11
R1241M11
DC_LIN_5V
R1266M11
R1262M11
R1258M11
R1263M11
R1248M11
C1255M11
U1253M11
DC_LIN_5V
SMALLER PICKER
U1269M11
R1274M11
U1282M11
R1284M11
C1250M11
U1251M11
C1248M11
C1249M11
R1247M11
R1285M11
R1280M11
C1273M11
R1279M11
C1272M11
R1295M11
DC_LIN_5V
DC_LIN_5V
DC_LIN_5V
GND
COM
NO
NC
V_POS
IN
R1296M11
INTEGRATOR
R1291M11
R1265M11
I_TO_V
C1294M11
U1202M11
U1202M11
R1289M11
C1288M11
R1286M11
R1293M11
C1291M11
R1287M11
C1286M11
R1276M11
R1275M11
R1277M11
R1278M11
R1281M11
R1283M11
C1270M11
C1271M11
DC_LIN_5V
STABLE LOCATION
PLACE IN THERMALLY
Q1263M11
R1230M11
R1255M11
R1254M11
U1256M11
R1261M11
R1257M11
C1262M11
DC_LIN_5V
DC_RAW_B+
22K
22K
R1253M11
TEMP CUTBACK
C1239M11
U1238M11
Q1264M11
U1243M11
R1251M11
R1260M11
C1261M11
R1259M11
R1249M11
R1250M11
U1254M11
DC_LIN_5V
DC_LIN_5V
DC_LIN_5V
VOUT
GND
22K
22K
POS
R1273M11
R1267M11
Q1265M11
Q1268M11
U1257M11
U1257M11
TXH_1
TX_INH
DC_LIN_3V
FILT_RAW_B+
22K
22K
GND
VCC
IN
R1264M11
R1270M11R1269M11
R1272M11R1271M11
COUPLER
RVS
PDADI
BAND
L1201M11
R1202M11
R1297M11
C1299M11
C1202M11
C1201M11
C1204M11
DC_LIN_3V
U1204M11
U1204M11
R1208M11
R1207M11
U1203M11
TX_SWI
TXH_1
DC_LIN_3V
OUT
GND
VCC
VOUT
GND
VOS
VM
RFIN
VCC
R1206M11
L1202M11
C1203M11
RF_OUT
OUT
R1203M11
C1205M11
R1205M11
VC
VCTRL
OUT
FILT_RAW_B+
OUT
ANA_RX_FE_FILT_VTUNE
TX_7V_1
OUT
OUT