SA9105A

sames

9/12

Figure 1: Application Circuit for Three Phase Power/Energy Measurement.

SA9105A

DIP-40

IC-1

R13

2.5V

VI3N

0V

2.5V

DR-00233

C12

XTAL

19

18

20

17

C7

C8

16

15

14

13

12

11

FROM CTs

VI2P

VI1N

VI1P

VI2N

VI3P

N

R20

R19

R18

0V

MAINS VOLTAGES

LINE 3

LINE 2

LINE 1

C6

R9

R10

R11

R12

R8

10

9

5

6

8

7

C5

3

4

1

2

C4

R3

R2

R1

R3A

R2A

R1A

C11

C14

R14

P14

0V

21

22

23

24

28

26

25

29

27

30

0V

0V

FOUT3

FOUT2

FOUT1

C13

5V

P6

0V

P5

0V

R17

R16

R15

C10

36

35

33

31

34

32

C9

40

39

38

37

R6

C3

+

C1

+

C2

+

R7

R5

R4

R 2 1

2.5V

5V