SA9105A
Figure 1: Application Circuit for Three Phase Power/Energy Measurement.
MAINS VOLTAGES
R 1
R 2
R 1 A
R 2 A
LINE 1
LINE 2
R 3
R 3 A
LINE 3
N
C 4
5V
40
1
0V
2
39
38
C 5
C 6
C 9
3
4
R 7
37
FROM CTs
C 1 0
5
6
36
35
R 1 8
R 1 9
R 2 0
R 8
VI1P
VI1N
VI2P
VI2N
VI3P
VI3N
R 1 5
+ C 1
R 9
34
7
SA9105A
DIP-40
IC-1
R 1 6
R 1 7
C 2
C 3
R 1 0
R 1 1
R 1 2
R 1 3
+
+
2.5V
8
33
32
9
R 6
P 6
R 5
P 5
R 4
R 2 1
10
31
C 1 4
C 1 1
11
12
30
29
C 7
2.5V
2.5V
5V
13
28
27
14
15
C 8
C 1 3
0V
26
16
17
25
24
FOUT3
0V
0V
18
19
23
22
0V
FOUT2
FOUT1
0V
20
21
XTAL
C 1 2
DR-00233
R14
P14
0V
9/12
sames