
104
NX-220
SCHEMATIC DIAGRAM /
原理图
X57-804 7/8
AO
AP
AQ
AR
AS
R:0V
T:1.63V
R:0V
T:2.45V
R:0V
T:0.53V
R:0V
T:4.68V
R:0V
T:3.31V
R:4.63V
T:0V
R:3.33V
T:0V
R:2.90V
T:0V
R:1.70V
T:0V
R:0.68V
T:0V
RX:4.68V
TX:0V
R:3.84V
T:0V
R:3.44V
T:0V
R:0.68V
T:0V
R:1.99V
T:0V
R:4.87V
T:0V
R:0V
T:4.98V
/DSW
PDSW
/T_R
ASQ
ASQDET
RSSI
+B
50T
D412
HSC277
R457
4.7k
D413
H SC27 7
R331
10k
L308
IC302
T K10931VTL-G
1
OSC-B
2
OSC-E
3
MIXout
4
Vcc
5
AM-IFin
6
AM-DCPL
7
FM-IFin
8
FM-DCPL1
9
FM-DCPL2
10
LIMout
11
QUADin
12
FM-DETout
13
AM-DETout
14
AMSW
15
RSSIout
16
RF-AGCout
17
AGCAMPout
18
AM-AGCin
19
NOISEin
20
NOISEout
21
COMPin
22
COMPout
23
GND
24
RFin
R209
100k
C 3 4 3
C313
33p
C3 23
0 .1u
R329
22k
C308
100p
C319
0 . 0 1 u
C318
68p
R210
220k
C 3 1 6
0.1 u
C321
0.1u
2SC5108(Y)F
Q30 1
C202
0.01u
C350
470p
C303
0.1u
C215
1
000p
L302
560n
C341
0. 1u
R330
18k
C338
0.01u
R208
150k
C204
4.7u
R3 0 5
10
R327
10k
2 SC4 215 -F(Y)
Q30 3
L307
1.5u
L306
100n
C311
150p
R301
560
C330
0.1u
R 3 4 0
560k
C205
470p
C327
10p
R335
220
R3 10
10k
C 3 4 0
0. 1 u
C31 5
0.1 u
C322
0.1u
C302
0.01u
R 306
330k
L201
C339
0 . 1 u
C324
10u
R320
270k
C 3 1 0
100p
C F 1
I N
oU T
C351
0.01u
C317
10u
C314
0.1u
C332
0.01u
R326
100k
R328
4. 7k
R207
100k
L206
82n
R147
560
L103
100n
C110
1000p
R149
1k
R146
0
2SC5383-T111
Q105
R110
2.2k
C112
0.1u
C175
0.033u
C106
1000p
C 102
1000p
C101
470p
C111
470p
L121
100n
R112
560
C173
470p
R 1 4 4
27k
R101
4.7k
C218
7p
C216
1000p
L208
68n
L207
220n
C 3 5 4
0 . 0 1 u
R338
100
R352
10k
R349
1k
C346
47p
C359
47p
R 3 4 4
6.8k
CN301
IC304
T C 7 5 W 5 1 F K ( F )
1
o U T A
2
I N - A
3
I N + A
4
V S S
5 I N +B
6 I N -B
7 oUT B
8 V DD
R351
100k
R332
47k
R341
100k
R141
470k
R143
1k
R142
470k
Q110
S S M 6 L 0 5 F U - F
R 102
18
R114
10
2SC4926YD
Q102
C201
0.01u
R201
47
R203
680
C210
0.01u
R345
270
R205
330
C357
18p
R346
270
C356
3p
C35 3
0 .01 u
C207
1
000p
L202
3S K 318
Q201
C360
0. 01u
C203
470p
X F 1
49.95MHz
C358
6p
C212
22p
R204
4 . 7 k
C214
15p
C211
4p
C208
10p
C 213
5p
R117
470
C119
1000p
R118
18
R D01MU S1-T113
Q103
R124
68k
C114
1000p
C120
100p
R115
12
R116
470
R119
82k
L104
39n
R121
47
L106
C121
1000p
C 1 1 3
33p
C115
18p
C107
10p
R111
4.7k
C209
12p
L203
270n
C398
10p
R 3 02
1k
C3 01
0.0 1 u
C307
10p
R113
27
C104
R109
22
C217
3.5p
R245
1k
BPF
C293
470p
C122
1000p
R123
56k
R120
39k
C116
1000p
R122
100
D101
HZU5CLL
R148
1k
C174
2.2u
L204
33n
L205
33n
L102
33n
R308
0
L305
56n
L105
100n
L107
4.7n
C170
470p
R4 7 4
0
R355
8.2k
R356
8.2k
R35 7
820
RSSI
1000p
560n
0. 47u
T/R SW
D 4 1 2 ,41 3
PD SW
PRE DRIVE AMP
DRIVE AMP
APC SW
APC PROTECT
IF AMP
TRIPLER
FM SYSTEM
MIXER
DC AMP (RSSI/ASQL)
Q201
33A
50T
50R
50T
50R
+B
C139
39p
C11
8
27p
C1
8
6
1p
R10
4
270
R10
3
270
OSC
APC
APC
5
5
APC SW
TX-RX UNIT (X57-8040-10)