1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A
Date: 5/6/2011 Sheet of
File: N:\PCBMGR\..\06731-3_ADC.SchDoc Drawn By:

Auxiliary I/O Board (ADC)

B
33
RT
06731
1
2
3
4
5
6
7
8
9
P1
ANALOG INPUT
+5V-ISO
CH0
15
CH1
16
CH2
17
CH3
18
CH4
19
CH5
20
CH6
21
CH7
23
NC
4
NC
7
SHTDN 13
VDD 2
VDD 1
SDA 9
SCL 5
A2 10
A1 12
A0 6
REF 27
NC
8
AGND
14
REF-AJ 26
DGND 3
NC
22
NC
24 NC 28
NC 25
NC
11
U1
MAX1270BCAI+
+5V
GND
GND
+5V-ISO
SCL
SDA
AGND
ISO-GND
ISO-GND
+5V-ISO
1 6
52
U4A
NC7WZ17P6X
ISO-GND
+5V-ISO
ISO-GND
1
3
2
4
5
6
U2
SMS12

C13

0.1uF

C14

0.1uF

C12

0.1uF

C11

0.01uF

BLU
DS1
SDA

C8

0.1uF

C9

0.1uF

C2

0.1uF

C3

0.1uF

C4

0.1uF

C5

0.1uF

C6

0.1uF

C7

0.1uF

C10

4.7uF
AN-CH0
AN-CH1
AN-CH2
AN-CH3
AN-CH4
AN-CH5
AN-CH6
AN-CH7
R9
4.99

C27

4.7uF
+5V-ADC
ISO-GND
ISO-GND
R3
1K
R5
2.2k
R6
2.2k
1
3
2
4
5
6
U3
SMS12
3 4
U4B
NC7WZ17P6X
R4
1K
BLU
DS2
SCL

C15

.01/2KV

GND1 1
NC 2
VDD1 3
NC 4
SDA1 5
SCL1 6
GND1 7
NC 8
GND2
9
NC
15 VDD2
14
NC
13 SDA2
12
SCL2
11
GND2
16
NC
10
U5
ADuM2250
R17
49.9
ISO-GND
TP7
TP8
TP5
TP6

C29

1nF

R18
49.9

C30

1nF

AGND
AGND

C1

0.1uF
TP4 AGND
ISO-GND
CHASSIS
PRINTED DOCUMENTS ARE UNCONTROLLED
DCN:6092
D-22
07276B DCN6418