NX-800
SCHEMATIC DIAGRAM
1.63V
1.63V
3.28V
1.62V
1.62V
3.26V
R : 3.31V
T : 0V
3.25V
1.63V
1.63V
3.28V
1.65V
1.65V
1.63V
1.63V
1.31V
1.31V
3.28V
R : 0V
T : 1.63V
1.62V
1.62V
3.28V
1.63V
1.63V
3.28V
C750
8
1
68p
C712
100k
R710
330p
C706
100k
3.3u
C701
R705
100k
R714
R716
C707
0
0.1u
0
R731
1
7
8
VDD
MOD SMF
LPF (MOD)
C720
100k
0
100k
R741
VSS
4
2
3
5
6
TC75W51FK(F)
IC702
R739
R745
IC709
MOD SUM
100p
C736
R749
82k
68k
1200p
C715
68k
LPF/SUM AMP
VSS
4
R748
5
MIC SUM2
0
IC706
0.1u
TC75W51FK(F)
1
2
3
220p
C721
R722
56k
R724
R725
MIC AA
8
7
6
VDD
R765
SCSW(MIC)
SUM AMP
(AI/TONE/MI1/MI2)
/(MOD/DI)
MIC SUM1
6
7
5
VEE
INH
CoMMoN
CH1
VCC
CH0
2
3
A
GND
(TXO/TXI)
AF SW
4
0.1u
C751
1k
47k
R767
47k
R768
C714
0.01u
C710
47k
R717
VIN+
VSS
V
oUT
MCP6021-E/O
T
3
2
1
0.01u
C725
0.01u
C732
22k
R734
VIN-
4
5
VDD
(2nd IF DET)
10k
R730
0.01u
IC704
33k
R733
C744
IC708
TC7W53FK(F)
0.1
0.1u
0.1u
C742
100k
R759
56k
R753
0.1u
C748
100k
R766
10
R726
BUFFER AMP
2nd IF BUFF
TC75W51FK(F)
R798
C784
C757 15p
R774 470k
82k
680k
0.1u
R789
0.1u
VSS
4
3
C770
1
VDD
2
R773 680k
R801
330k
R797
0.1u
C783
0
1000p
5.6k
R806
C793
100k
470k
0.1u
C773
5
6
39k
R786
8
7
22p
C764
10k
R796
0.1u
C782
Q705
2SA1832(GR)F
R779
1u
C766
RB706F-40
D705
270k
R787
0
R793
2SJ243-A
MUTE (MI1)
100k
Q706
4.7k
R812
10u
C787
680
2SJ243-A
R816
R804
10u
C795
Q707
MUTE (MI2)
4.7k
R813
100k
R809
100k
R815
10u
C794
Q704
LIMIT
Q704,705
2SC4738(GR)F
D704
(LIMIT)
AF DETECTOR
D704,705
1u
C765
150k
R784
RB706F-40
C762
C763
1000p
C791
33A_2
MIC
/SCSW
MOD
0.1u
C729
TXO
0.1u
0.1u
TXI
DTI
ME
MI2
MI1
1
2
2
1
R775
6
VREF
PLD
PLD
450K
IF_DET
33A_2
33A_2
33A-2
MM
MM2
OPT10
OPT10
C815 10u
C816 10u
1
1
1
1
1
2
2
2
9
9
9
9
9
13
13
10
10
11
11
11
11
13
13
13
13
13
X57-739 11/16
AY
AZ
BA
BB
BC
TX-RX UNIT (X57-7390-10)