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ADV7180WBSTZ Datasheet(PDF) 43 Page - Analog Devices |
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ADV7180WBSTZ Datasheet(HTML) 43 Page - Analog Devices |
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43 / 120 page ![]() Data Sheet ADV7180 Rev. G | Page 43 of 120 IF FILTER COMPENSATION IFFILTSEL[2:0], IF Filter Select, Address 0xF8[2:0] The IFFILTSEL[2:0] register allows the user to compensate for SAW filter characteristics on a composite input, as would be observed on tuner outputs. Figure 32 and Figure 33 show IF filter compensation for NTSC and PAL, respectively. The options for this feature are as follows: • Bypass mode • NTSC, consists of three filter characteristics • PAL, consists of three filter characteristics See Table 107 for programming details. 6 –12 2.0 5.0 FREQUENCY (MHz) IF COMP FILTERS NTSC ZOOMED AROUND FSC 4 2 0 –2 –4 –6 –8 –10 2.5 3.0 3.5 4.0 4.5 Figure 32. NTSC IF Filter Compensation 6 –8 3.0 6.0 FREQUENCY (MHz) IF COMP FILTERS PAL ZOOMED AROUND FSC 4 2 0 –2 –4 –6 3.5 4.0 4.5 5.0 5.5 Figure 33. PAL IF Filter Compensation |
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