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153
SCHEMATIC DIAGRAM /
原理图
NX-300
T : 4.28V
R : 4.27V
T : 4.38V
R : 1.4V
R : 0.14mV
T : 4.08V
T : 5.06V
R : 4.978V
T : 1.84mV
R : 0.15mV
R : 3.25V
T : 9.7mV
R : 4.26V
T : 6.94mV
T : 4.17V
R : 1mV
R : 4V
T : 4.03V
T : 0.43V
R : 0.96V
R : 4.15V
T : 18mV
T : 4.2V
R : 2.5mV
T : 0.87V
T : 18mV
R : 13.73V
T : 13.82V
T : 14.43V
R : 14.34V
T : 14.41V
R : 14.33V
R : 0.97V
R : 2.5mV
R504
100k
R505
R500
0.1u
C500
R501
C502
470p
2
100k
IN+
3
100k
GND
IN-
4
OUT
TLV2381ID8V
1
IC501
TCXO MOD
19.2MHz
X500
VDD
5
C506
10p
C509
10p
GND
LM73CIMKX-0
SMBCLK
SMBDAT
C501
VC
100p
6
5
ALERT
4
VDD
C505
VCC
oUTPUT
GND
ADDR
1
2
100p
C508
0.01u
4.7u
L500
10
C504
0.01u
R503
10
IC500
3
R572
R548
R547
C554
C555
Fvco
Fin
C541
0.047u35
C535
0.15u35
100p
100p
1u
2SC5383-T111
D501
C520
HSC1
19
R515
4.7k
20
R511 10
47k
R506
C511
10u
R512 10
R513 10
4.7k
R567
19
L598
VCCcp2
18
VCC digital
C517 100p
C519 100p
Q503
VCC
25
24
23
22
21
Clock
/CS
Data
GND
Max out
Mod in
100p
1
C522
R519
10
R533
R520
1k
3
2
C524
100p
4
R534
47k
R566
470k
C542
10M
0.1u
R546
100k
TLV2381ID8V
1
IC503
5
C536
R523
C528
100p
C527
100p
1k
DA221
47p
R539
D505
C546
4700p
R536
0
R535
150
11
R514
C515
IC502
L599
SKY72300-362
0.01u
0
GND OSC
13
/Fvco
CPout2
VCC cp2
LD/PS2
17
16
15
14
12
LD/PS1
VCCcp1
CPout1
/OSC AC
GND
OSCout
VCC SOC
8
OSC
9
10
NC
7
6
/Fin
2
3
4
5
C521
10
R532
C533
470p
R522
0.1u
C526
R527
+
0
C534
100p
+
0
R538
390
R531
68k
47k
R530
1k
L503
R541
10k
Q504
2SK879-F (Y)
R529
1k
R537
CV
CN500
R576
D511
L509
L528
C565
C557
100k
Q507
2SC5383-T111
APC
C600
100k
0.1u
C601
1u
100p
R600
1k
VSS
TC75W51FUF
47p
0
3
2
4
1
6
5
VDD
IC504
7
8
C602
0.1u
R603
2.2k
R601
R602
120k
18k
R670
220k
R557
HSC1
19
D518
1.5k
C572
L517
1SV282-F
OP AMP
(VCO MOD/APC)
C562
1u
R554
100k
R555
1SV325F
D507
C548
100p
220n
220n
L515
0
R599
47k
47k
33p
220n
D517
1SV282-F
D516
220n
L519
1SV282-F
C567
C578
4.7u
L523
470k
1k
10u
R562
C584 470p
SSM6L05FU-F
R558
470k
C582
R568
470p
Q510
2SJ347F
R563
47k
Q511
C585
470p
100
R565
C587
470p
220n
C547
1SV325F
D506
L514
C556
470p
220n
L508
R575
0
D514
L518
220n
L516
D515
TX VCO
C568
220n
D510
RX VCO
C566
Q512
2SC5636
R564
150k
C586
10
0.1u
C523
C513
C518 100p
/PCS_RF
PLD
SCK1
SDO1
0.01u
C512
TCXO_MOD
I2CSDA
I2CCK
50C
/T R
33C
CV
10u20
C539
+
50C
APC
VCO_MOD
ASSIST
150C
50IF
50R
50R
50IF
50T
50T
THP
19.2M
+B
+B
33C
TEMPERATURE SENSOR
TCXO MOD
AF AMP for
PLL IC
BUFFER AMP
OSCILLATION
VCO
FREQUENCY CONTROL
D506,510,514,515
BUFFER AMP
SWITCH
T/R
Q510,511
RIPPLE FILTER
FREQUENCY CONTROL
D507,511,516,517
MODULATION
TX
D519
RIPPLE FILTER
DC AMP for VCO TUNE
DIODE
BYPASS
FILTER
RIPPLE
12n
L504
L530
56n
0
R550
C553
5p
C550
4p
47p
C525
10p
C588
150C
0.01u
C514
Q508
2SK508NV(K52)
L521
220n
L522
C573
C571
6p
C577
470p
0.5p
C581
R560
22
L525
220n
R559
C574
OSCILLATION
5p
C579
R561
470p
C580
22n
5p
2SK508NV(K52)
Q509
VCO
L524
220n
C576
220n
L526
C583
0.5p
L527
D519
1SV278F
C570
0.75p
IN+
IN-
OUT
GND
VDD
TX
Q512
D501,Q503
THP
R577
0
C987
R583
C561
C545
120k
15k
0
R574
0.1u
C503
0
R586
0
R958
0
0
C563
R580
0
R581
0
3p
R570 0
IC500
5p
C543
0
10p
R955
R956
0
R957
0.01
R573
R935
10p
33n
470p
470p
1SV290B-F
1SV290B-F
1SV290B-F
27n
82p
1.5p
C575
6p
220
220
2p
L520
0.5p
470p
R552
220k
100p
1
2
3
4
4
3
3
X57-737 (A/2) 2/4
BH
BG
BF
BE
BD
TX-RX UNIT (X57-7370-11) (A/2)