– 13 –

CXA2125Q

47

µF

BC547B

+12V

+9V

22

µF

SDA

SCL

+9V

+9V

+9V

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

1k

Ω

+12V

BC547B

Measurement

point

Measurement

point

V

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16

20

21

22

23

24

25

26

27

28

29

30

31

32

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

17 18 19

33

34

35

CXA2125Q

V

Fig. 1. Video system (d.c. test)

d.c. measured from pins: 2, 4, 6, 8, 10, 13, 15, 17, 21, 23, 25, 39, 41, 44, 46, 47, 48, 49, 55, 57, 59, 61, 63

Notes) 1. All +9V supplies de-coupled close to supply pins, 20, 38, 60 with 10nF ceramic capacitor.

2. All video outputs are loaded with emitter follower during tests.