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SA9605A

THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT

South African Micro Electronic Systems 

SA9605A

XTAL is a colour burst TV crystal (f = 3.5795 MHz) for the oscillator. The oscillator

frequency is divided down to 1.78975 MHz on-chip, to supply the digital circuitry and the

A/D converters.

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

MAINS VOLTAGES

LINE 1

LINE 2

R1

R1A

R2

R2A

LINE 3

R3

R3A

VI2P

VI2N

VI3P

VI3N

FOUT1

FOUT2

DIR

R19

C3

R20

R6

P6

0V

R11

1

R10

2

R17

3

R13 4

20

19

18

SA9605A 17

R16 C2

R8

R9

R15 C1

R18

VI1P

VI1N

R12

5

6

DIP - 20 16

15

R4 R5

7

IC-1

14

R14

P5

8

13 PGM1

5V

9

12 PGM0

10

11

R7

P14

0V

XTAL

0V

R21

C14

C13

C12

0V

0V

DR-01112

10/14

sames

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