adv7194 Analog Devices, Inc., adv7194 Datasheet - Page 51

• Manufacturer Part Number: adv7194
• Description: Professional Extended-10? Video Encoder With 54 Mhz Oversampling
• Manufacturer: Analog Devices, Inc.

If an output filter is required for the CVBS, Y, UV, Chroma and
RGB outputs of the ADV7194, the following filter in Figure 100
can be used in 2× Oversampling Mode. In 4× Oversampling
Mode the filter in Figure 102 is recommended. The plot of the
filter characteristics are shown in Figures 101 and 103. An output
FILTER I/P
–10
–20
–30
–40
–50
–60
–70
0
100k
600R
22pF
22 H
1M
–30
FREQUENCY – Hz
0
68pF
22 H
×
56pF
6.75
6.8 H
×
10M
600R
13.5
2
REQUIREMENTS
FILTER
OPTIONAL OUTPUT FILTER
FILTER O/P
100M
APPENDIX 6
FREQUENCY – MHz
27.0
filter is not required if the outputs of the ADV7194 are con-
nected to most analog monitors or 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
–14
–21
–28
–35
–42
–49
–56
–63
–70
4
REQUIREMENTS
–7
0
100k
×
FILTER
40.5
600R
1M
27pF
22 H
FREQUENCY – Hz
54.0
68pF
10 H
×
×
10M
600R
ADV7194
FILTER O/P
100M