0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
C25
4.7uF
R48
20.0k
+15V
C26
0.1uF
VCC
5V
VEE
-5V
R51
100k
D10
1N4148
R52
27
C27
0.47uF
C28
1uF
C29
1uF
R53
100k
DC_V_or_I
C30
0.1uF
R54
10k
GND
U13
ICL7135CPI
VEE
1
VREF
2
AGND
3
INT OUT
4
AZ IN
5
BUF OUT
6
RC1
7
RC2
8
IN HI
10
IN LO
9
VCC
11
D5
12
D4
17
D3
18
D2
19
D1
20
B8
16
B4
15
B2
14
B1
13
CLK 22
DGND 24
R/H 25
STROBE 26
OR
27
POL 23
BUSY 21
UR
28
VCC
5V
DS1
DS2
DS3
DS4
DS5
VCC
5V
X1
ECS-300C-12.288
DIV OUT
2
U14
74LS47N
B1
7
B2
1
B3
2
B4
6
OA
13
OD
10
OE
9
OF
15
OC
11
OB
12
OG
14
~LT 3
~RBI 5
~BI/RBO 4
RN1
220
R x 8 Network
F
G
A
B
C
D
E
C31
4.7uF
R55
20.0k
+15V
C32
0.1uF
VCC
5V
VCC
5V
VCC
5V
VEE
-5V
R58
100k
D12
1N4148
R59
27
C33
0.47uF
C34
1uF
C35
1uF
R60
100k
R61
10k
GND
U15
ICL7135CPI
VEE
1
VREF
2
AGND
3
INT OUT
4
AZ IN
5
BUF OUT
6
RC1
7
RC2
8
IN HI
10
IN LO
9
VCC
11
D5
12
D4
17
D3
18
D2
19
D1
20
B8
16
B4
15
B2
14
B1
13
CLK 22
DGND 24
R/H 25
STROBE 26
OR
27
POL 23
BUSY 21
UR
28
DS6
DS7
DS8
DS9
DS10
U16
74LS47N
B1
7
B2
1
B3
2
B4
6
OA
13
OD
10
OE
9
OF
15
OC
11
OB
12
OG
14
~LT 3
~RBI 5
~BI/RBO 4
RN2
220
R x 8 Network
WF
WG
WA
WB
WC
WD
WE
WP
W_SCALED
Voltage and Current A-to-D Converter
Watts A-to-D Converter
GND
GND
GND
IC REFERENCE DESIGNITER
POWER CONNECTIONS
VCC
VEE
GND
U14 - U16
16
-
8
R50
9.09k
R49
2.10k
R56
2.10k
R57
9.09k
TP5
TP6
Q21
2N4402
Q3
2N4401
Q1
2N4401
Q2
2N4401
Q6
2N4401
Q7
2N4401
Q8
2N4401
Q9
2N4401
Q10
2N4401
Q20
2N4401
Q4
2N4401
Q5
2N4401
Q19
2N4401
R74
47k
R75
47k
C36
10uF
D11
LM285_1.2
D9
LM285_1.2
R76
4.7k
RV22
200
RV23
200
Designed by:
Approved by:
Sheet
of
Revision:
Size:
2105-070
V. Sanfilippo
CLARK
6
8
F
B
DWG #.:
Valhalla Scientific, Inc
12127 Kirkham Road
Poway, CA 92064
(858) 457-5576
2105 Main Board
A/D Converters Display Drivers
Section:
