COMPOSITE VIDEO COLOUR
SUB-CARRIER PASS AND
REJECTION FILTERS
These filters are to a proven design to suppress or pass the colour sub-carrier
elements of a composite video signal. The reject filters are group delay equalised in
order to minimise the distortion to the luminance signal. With this type of filter there
is always a compromise between the amount of colour signal rejected and the loss of
picture definition which can be tolerated.
The filters offered below have found to be acceptable but other bandwidths and rates
of cut-off can be supplied upon request.
Specification – Sub-Carrier Pass Filters
Order code
Centre Frequency MHz
3 dB loss frequency MHz
28 dB loss frequency MHz
Insertion loss at Centre Frequency dB
Package
PAL
FC443PC
4.43
4.21/4.59
3.60/6.70
< 1.0
DR00014A
NTSC
FC358PC
3.58
3.40/3.71
2.91/5.41
< 1.0
DR00014A
Specification – Sub-Carrier Rejection Filters
Order code
Centre Frequency MHz
3 dB loss frequency MHz
Loss at Centre Frequency dB
Pulse and Bar
K
p
K
pb
Package
PAL
FC443AD
FC443WD
4.43
4.43
3.86/5.04
3.53/5.34
16
26
2
2
2
2
DR00009B
DR00009B
NTSC
FC358AD
FC358WD
3.58
3.58
3.12/4.07
2.85/4.32
16
26
2
2
2
2
DR00009B
DR00009B
Note: These items are
NOT
aqueous washable.
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
Fara103d
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FARADAY [ FARADAY TECHNOLOGY ]
