CXA2125Q
+9V
51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
+12V
52
+9V 53
BC547B
56kΩ 2.2µF
54
55
56kΩ 2.2µF
56
57
56kΩ
56kΩ
56kΩ
58
59
2.2µF
60
+9V
61
2.2µF
62
63
2.2µF
64
47µF
CXA2125Q
32
31
30
29
28
27
26
25
24 2.2µF
23
22
2.2µF
2.2µF
21
20
+9V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
SCL SDA
22µF
56kΩ
56kΩ
56kΩ
1kHz
Input
signal
V
Measurement
point
Fig. 3. Video system (input impedance)
Signal applied and measured from Pins 2, 4, 6, 8, 10, 13, 15, 17, 21, 23, 25, 55, 57, 59, 61, 63
Notes) 1. All +9V supplies de-coupled close to supply pins, 20, 38, 60 with 10nF ceramic capacitor.
2. Voltage measurements carried out with a high input impedance DVM. Typically 10GΩ.
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