National Instruments sbRIO-9651, Design Manual, Page: 46 / 76

© National Instruments | 2-13
NI sbRIO-9651 System on Module Carrier Board Design Guide
Serial5 Reference Schematic
Figure 2-4 shows a schematic design for the Serial5 implementation on the reference carrier
board.
Figure 2-4. Serial5 Reference Schematic
Vcc_R S 485_1
S ERIAL5_TXN
S ERIAL5_RX_EN
S ERIAL5_TX_EN
Vcc_R S 485_1
S ERIAL5_RXP
S ERIAL5_TXP
S ERIAL5_RXN
S ERIAL5_RXP
S ERIAL5_RXN
S ERIAL5_TXP
S ERIAL5_TXN
S ERIAL5_TX
S ERIAL5_RX
Vcc_R S 485_1
3
9
10
11
16
2
15
1 3
12
19
8
7
4
5
20
14
1
6
17
18
U25
Tr a nceiver
Digit a l
I s ol a tion iCo u pler
R
D
I
S
O
L
A
T
IO
N B
A
RRIE
R
GND2-4
VI S OIN
GND2- 3
VI S OOUT
GND2-2
GND2-1
RE~
GND1-1
VDD1-1
GND1-2
VDD1-2
GND1- 3
GND1-4
TxD
DE
RxD
Y
Z
A
B
i s oPower
2
1
R141
10 K
1/16 W
0.5%
2
1
C160
0.1 UF
10%
16 V
1
2 C154
0.1 UF
10%
16 V 2
1
C159
10 UF
10%
10 V
1
2
C161
0.1 UF
10%
16 V
2
1 C162
10 UF
10%
10 V
2
1 C155
0.1 UF
10%
16 V
IGND0
I
IGND0
I
IGND0
I
IGND0
I
IGND0
I
IGND0
I
2
2
2
2
11
10
9
8
7
6
5
4
3
2
1 12
67
8
9
3
5
4
J7
D S UB9-761918-A
+ 3 . 3 V + 3 . 3 V
+ 3 . 3 V
+ 3 . 3 V
2 1
3 9 0.5%
1/16W
R140
2
1 C156
0.01 UF
10%
100 V
2
1 C15 3
0.01 UF
10%
100 V
0.1 u F a nd 0.01 u F
Acro ss pin 19 a nd 20
10 u F a nd 0.1 u F
Acro ss pin 12 a nd 11
10 u F a nd 0.1 u F
Acro ss pin 8 a nd 9
0.1 u F a nd 0.01 u F
Acro ss pin 2 a nd 1
DC-DC Converter
ADM2587E