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140
NXR-810
SCHEMATIC DIAGRAM /
原理图
X57-795 3/8
K
L
M
N
O
TX-RX UNIT (X57-7952-71)
SPSD0
SPSCLK0
50C
/16_8PCS
RSSI
33C
50C
33C
LDT
33C
33C
C615
180p
C600
10u
C416
0.01u
C425
0.1u
C613
0.01u
R605
0
C610
0.01u
R402
100
C614
10u20
C421
1000p
L601
10u
R411
47k
C411
1u
IC402
LMC7101BIM5
1
OUTPUT
2
V+
3
INPUT+
4
INPUT
-
5
V-
R602
100
R405
10k
R401
22
R417
22
IC401
TC75W51FK(F)
1
oUT
A
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
C605
0.01u
R404
0
R452
220k
C606
10u
C424
0.1u
C422
0.1u
C612
0.01u
C413
1u
R420
47
R412
100
SSM3K15TE(F)
Q600
1
G1
2
A1
3
Y2
4
GND
5
A2
6
Y1
7
G2
8
VCC
L613
C602
0.1u
R413
0
C410
470p
R611
100
C417
0.1u
R684
0
R449
330k
C418
1000p
R416
2.2k
R608
100k
IC409
TC75W51FK(F)
1
oUTA
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
R400
220k
L614
C603
0.1u
C601
10u
C401
0.1u
R607
100k
R410
47k
R685
0
C404
10p
C608
0.01u
R606
100k
C400
0.1u
C403
0.1u
C440
0.1u
C423
0.01u
L600
10u
R609
4.7k
C406
0.1u
C402
0.1u
R421
1.8k
C405
0.1u
R613
0
CF400
L72-1028-05
R422
100
C407
470p
R451
100k
C604
0.1u
R604
100k
R418
22
R453
22
R409
47k
C408
0.1u
C611
0.01u
C419
470p
R610
0
L602
R403
6.8k
C607
10u
1
RSET
2
CP
3
CPGND
4
AGND
5
RFINB
6
RFINA
7
AVDD
8
REFIN
9
DGND
10
CE
11
CLK
12
DATA
13
LE
14 MUXoUT
15
DVDD
16
VP
L603
10u
R683
0
R408
10k
R407
470k
1
VoUT
2
-VS
3
+IN
4
-IN
5
+VS
C415
0.1u
IC601
TC7WH126FU-F
1
G1
2
A1
3
Y2
4
GND
5
A2
6
Y1
7
G2
8
VCC
R450
56k
C414
470p
R612
47
R415
0
C412
470p
R448
330k
1
RF_DEC
2
RF_IN 3
GND1 4
MIX_oUT 5
GND2 6
IF_IN 7
IF_DEC
8 GC_IN
9 IF_oUT
10 RSSI
11 V+2
12 V+1
13 Lo_IN
14 Lo_DEC
R406
22
AGC -->
<-- 450kHz
50C
BUFF & DIFF AMP
BUFFER AMP
OP AMP
BUFFER AMP
BUFFER
DC SW
AGC
<-- 450kHz
450kHz -->
RSSIOFS -->
VT1 -->
VT2 -->
VT1 -->
VT2 -->
W_/N
VN_/N
VN_/N
W_/N
19.2MHz -->
19.2MHz -->
19.2MHz -->
19.2MHz -->
MO -->
MB -->
MB -->
MO -->
19.2MHz or 10MHz -->
19.2MHz or 10MHz -->
16.8MHz MOD PLL
<-- RSSI
33C
33C
IC600
TC7WH126FU-F
BUFFER
IC400
AD8051ART
IF AMP
IC403
NJM2287V
IF SYSTEM
IC602
ADF4001BRUZ
16.8MHz PLL
2SA1832(GR)F
Q601
DC SW
CN600
LDT
3.26V
3.27V
5.04V
3.27V
3.26V
3.17V
3.26V
3.27V
3.17V
1.61V
AW:-69.4dBm
AN:-70.5dBm
VN:-73.3dBm
3.27V
83.6mVrms
147.3mVrms