ADV7191 Analog Devices, ADV7191 Datasheet - Page 50

• Manufacturer Part Number: ADV7191
• Description: Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
• Manufacturer: Analog Devices

ADV7190/ADV7191
If an output filter is required for the CVBS, YUV, Chroma, and
RGB outputs of the ADV7190/ADV7191, the filter in Figure
94 can be used in 2× Oversampling Mode. Figure 96 shows a
filter that can be used in 4× Oversampling Mode. The plot of
the filter characteristics are shown in Figures 95 and 97. An output
FILTER I/P
–100
–150
–50
50
100k
0
1.0M
2.5 H
FREQUENCY – Hz
10M
470pF
0.82 H
×
6.75
×
100M
13.5
2
REQUIREMENTS
FILTER
FILTER O/P
OPTIONAL OUTPUT FILTER
1.0G
FREQUENCY – MHz
APPENDIX 6
27.0
filter is not required if the outputs of the ADV7190/ADV7191
are connected to most analog monitors, or TVs; however, if
the output signals are applied to a system where sampling is
used (e.g., Digital TVs), a filter is required to prevent aliasing.
4
REQUIREMENTS
–100
–20
–40
–60
–80
20
FILTER
100k
0
×
FILTER I/P
40.5
1.0M
2.2 H
FREQUENCY – Hz
10M
54.0
470pF
×
×
100M
FILTER O/P
1.0G