111
SCHEMATIC DIAGRAM /
原理图
NX-720
X57-823 7/10
TX-RX UNIT (X57-8230-11)
AE
AF
AG
AH
AI
-t
CV
ASSIST
TEMP
/PCS_RF
P_SCK1
PLL_MOD
DDCLK
PLD
SDO1
ASTSW
50R
33A_2
50R
50C
THP1
RSSI
/T_R
THP1
/T_R
FIN
33C
IF_DET
50R
50M
80C
SBC2
L2
4.7u
.
IC303
TK10931VTL-G
1 OSC<B>
2 OSC<E>
3 MIXo
4 VCC
5 AMIFi
6 AMIFdecp
7 FMIFi
8 FMIFdecp1
9 FMIFdecp2
10 LIMo
11 QUADi
12 FMDETo
13
AMDETo
14
AMSW
15
RSSIo
16
RFAGCo
17
AGCAMPo
18
AGC
19
NAMPi
20
NAMPo
21
COMPi
22
COMPo
23
GND
24
RFin
CN306
CN303
.
CF2
L72-1040-05
IN
oUT
X1
L77-3073-05
GND1
GND2
oUTPUT
VCC
D408
DB2S310
Q414
EMD9
2SA1832(GR)F
Q416
D409
DB2S310
2SC4738(GR)F
Q415
.
IC3
BD7542FVM
1
2
3
4
oUT1
VSS
5
6
7
8
VDD
L5
.
C29
0.15u
35
.
C32
10u
20
L1
TH1
100k
.
IC409
NJM2878F4-33
1
2
CoNTRoL
GND
4
VIN
3
VoUT
2SJ648-A
.
Q2
.
D2
DZ2J091(M)
.
CP1
10X4
.
L3
.
IC2
SKY72310-362
7
NC
8
OSC_AC_GND
9
OSCin
10
OSCout
11
VCC_OSC
12
GND_OSC
13
NC_1
14
NC_2
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
VCC_digital
20
DATA
21
CS
22
CLOCK
23
MODin
24
MUXout
1
VCC
2
Fin
3
Fin
4
LD/PS
5
VCCcp
6
CPout
25
GND
CF1
L72-1017-05
IN
oUT
L302
560n
L304
56n
2SC5108(Y)F
Q303
2
3
1
L309
100n
.
Q1
LTC014EEBFS8
CN302
CN304
L307
2.2u
L310
2SC4215-F(Y)
Q305
IC304
BU7445HFV
1
2
3
IN+
VSS
IN-
4
oUT
5
VDD
.
R430
1k
R71
100
.
R72
1k
.
R28
10M
.
R344
2.7k
.
R338
47k
.
R337
1k
.
R341
10k
.
R328
18k
.
R340
270k
.
R339 15k
R350
10k
.
R336
1k
.
R342
100k
R351
100k
.
R343
22k
R73
0
.
R345
0
.
R332
0
R308
0
.
R329
10
R440
0
R432
10k
R434
10k
R433
270k
R435
0
R431
0
R429
0
.
R30
180k
.
R12
68k
.
R13
47k
.
R31
47k
.
R23
10
.
R26
1k
.
R18
1k
.
R20
0
.
R24
390
.
R19
0
.
R27
10k
.
R22
120
.
R825
0
R323
0
.
R21
47
.
R29
47
.
R25
100k
.
R33
4.7k
.
R75
10
.
R10
10
.
R16
1k
.
R15
10
.
R76
0
.
R14
47k
.
R390
10k
.
R324
18k
R307
560
R315
0
R306
330k
R303
1k
R355
0
.
R304
1k
.
R305
1k
R381
220
R379
2.2k
R368
220
R316
3.3k
.
R326
330
R378
390k
R357
120k
R358
33k
.
C464
1u
.
C463
100p
.
C468
0.01u
.
C469
1u
10
C5
10p
C4
0.01u
.
C7
0.01u
C6
10p
C2
100p
C350
0.01u
C327
0.1u
.
C336
10u
10
.
C339
0.1u
.
C330
0.1u
.
C340
0.01u
.
C345 0.1u
.
C338
10u
10
.
C346
1u
.
C326
10p
C348
47p
.
C333
0.1u
.
C332
0.1u
.
C307
0.1u
C313
0.1u
.
C343
0.1u
C3
0.01u
.
C341
0.1u
.
C344
0.1u
.
C347
0.01u
.
C342
1u
C351
100p
C465
1u
C466
1u
C462
1u
.
C39
33p
.
C21
100p
.
C28 100p
.
C36
100p
C1
0.01u
.
C33
0.01u
.
C31
100p
.
C9
10p
.
C11
0.01u
.
C19
100p
.
C26
100p
.
C17
100p
100p
.
C23
100p
.
C20
100p
.
C10
0.01u
.
C24
0.1u
.
C25
100p
.
C22
0.1u
.
C18
100p
.
C16
.
C334
0.1u
.
C335
0.1u
.
C337
0.1u
.
C30
1u 25
C315
0.01u
C324
33p
C306
0.01u
C322
100p
C317
100p
C316
10p
C323
150p
C325
68p
C309
10p
C361
0.01u
.
C359
0.01u
C367
0.01u
C369
0.01u
C368
470p
C366
0.01u
.
C371
0.01u
.
C34
0.047u
.
C91
0.1u
+
-
150C
- +
-
ASSIST
+
CV
POWER
MIC
ME
SP+
SP-
POWER
MIC
ME
SP+
SP-
PLL System
DC AMP
(CV/Assist)
FM System
DC AMP(RSSI)
AVR(33C)
DC Switch
(Assist)
DC Switch
(Assist)
Tripler
1st IF AMP
DC Switch(150C)
DC/DC Converter
DC/DC Converter
Over Voltage
Protection
DC/DC Converter
D408,409
B-BUS
B-BUS
.
R17
100k
150C
3.3V
13.9V
3.
8
0V
0.64V
0.96V
4.70V
4.51V
3.30V
20kHz
3.3V
3.31V
Summary of Contents for NEXEDGE NX-720
Page 122: ...NX 720 ...