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STV8224B Scheda tecnica(PDF) 9 Page - STMicroelectronics |
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STV8224B Scheda tecnica(HTML) 9 Page - STMicroelectronics |
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9 / 12 page ![]() 8 7 6 5 4 3 2 1 0 38.55 38.95 39.35 38.75 39.15 IF FREQUENCY (MHz) Current Conversion with 100k Ω/100kΩ Bridge Figure 21 : AFC Voltage Pin 2 vs IF Frequency 0 -10 -20 -30 -50 -40 -60 -70 -80 1.0 2.0 3.0 4.0 5.0 V (V) 13 Figure 22 : Volume Control Attenuation vs V13 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 110 102 V (mV ) IN RMS 10-1 103 R24 = 1k Ω R24 = 3k Ω R24 = 5k Ω Figure 23 : Tuner AGC Output Current vs VIN (R24 is external adjustment Pin 24) 1.3 1.9 2.5 3.6 4.2 4.85 V 3 (V) t White Spike Noise Clamp Top White White Noise Level Insertion Black Noise Level Insertion Top Synchronization Black Spike Noise Clamp Figure 25 : Black and White Noise Inverter 100 10 1 0.1 0.01 0 10 20 30 40 50 60 70 80 V IN (mVRMS) Figure 24 : Video Signal to Noise Ratio (Pin 3) as a function of IF Input Signal (Pins 19-20) Weighted CCIR-567 STV8224B 9/12 |
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