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TW2864D Datasheet(PDF) 11 Page - Renesas Technology Corp |
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TW2864D Datasheet(HTML) 11 Page - Renesas Technology Corp |
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11 / 110 page ![]() TW2864 FN7745 Rev. 0.00 Page 11 of 110 September 28, 2012 Analog Front-end The TW2864 contains four 10-bit ADC (Analog to Digital Converters) to digitize the analog video inputs. The ADC can be put into power-down mode by the V_ADC_PWDN register. The TW2864 also contains an anti-aliasing filter to prevent out-of-band frequency in analog video input signal. So there is no need of external components in analog input pin except ac coupling capacitor and termination resistor. Figure 1 shows the frequency response of the anti- aliasing filter. 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 x 10 7 -40 -35 -30 -25 -20 -15 -10 -5 0 Frequency (Hertz) FIGURE 1. THE FREQUENCY RESPONSE OF ANTI-ALIASING FILTER |
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