ADV7179BCP-REEL View Datasheet(PDF) - Analog Devices

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Description

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ADV7179BCP-REEL

Chip Scale PAL/NTSC Video Encoder with Advanced Power Management

Analog Devices 

APPENDIX 7—OPTIONAL OUTPUT FILTER

If an output filter is required for the CVBS, Y, UV, chroma, and

RGB outputs of the ADV7174/ADV7179, the filter shown in

Figure 79 can be used. Plots of the filter characteristics are

shown in Figure 80. An output filter is not required if the

outputs of the ADV7174/ADV7179 are connected to most

analog monitors or analog TVs. However, if the output signals

are applied to a system where sampling is used (e.g., digital

TVs), then a filter is required to prevent aliasing.

FILTER I/P

22pF

1.8μH

75Ω 270pF

330pF

DISPLAY DEVICE

Z0 = 75Ω

75Ω

Figure 79. Output Filter

ADV7174/ADV7179

0

10

20

30

40

50

60

70

80

100k

1M

10M

FREQUENCY (Hz)

Figure 80. Output Filter Plot

100M

Rev. B | Page 49 of 52

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