STV8223A Datasheet, PDF (8/10 Pages) STMicroelectronics – MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES

STV8223A
Figure 20 : AFC Voltage Pin 2 vs IF Frequency
8
7
6
5
4
3
2
1
0
38.55
Current Conversion
with 100kΩ/100kΩ Bridge
38.75
38.95
39.15
IF FREQUENCY (MHz)
39.35
Figure 21 : Volume Control Attenuation vs V13
0
-10
-20
-30
-40
-50
-60
-70
-80
1.0
2.0
3.0
4.0
5.0
V₁₃ (V)
Figure 22 : Tuner AGC Output Current vs V_IN
(R24 is external adjustment Pin 24)
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
0.1
R24 = 1kΩ
R24 = 3kΩ
R24 = 5kΩ
1
10
V_IN (mV_RMS )
100 200
Figure 23 : Black and White Noise Inverter
V₃ (V)
4.85
White Spike Noise Clamp
4.2
Top White
3.6
White Noise Level Insertion
2.5
Black Noise Level Insertion
1.9
Top Synchronization
1.3
Black Spike Noise Clamp
t
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