PRACTICAL 601 FILTERS
YUV ANTIALISING
In many 4:2:2 YUV format A-D and D-A video interface applications operating at standard
sampling rates of 13.5 MHz for the luminance (Y) channel and 6.75 MHz for the Colour Difference
(U and V) channels a filter meeting the full requirements of Rec. ITU-R BT. 601-5 should be
specified but cost may be prohibitive. Practical 601 filters allow a small compromise in
performance resulting in significant cost savings which may be acceptable.
•
Choice of package format to suit requirement
•
Tight passband ripple specification
Filter type
Passband Shape
Impedance (ohms)
Sampling Frequency
Insertion loss
at 100 kHz
End of Passband
Amplitude ripple (dB)
wrt 100 kHz
•
Flat and Sinx/x versions
•
Aqueously washable versions available
Luminance Pre
Flat
75
13.50 MHz
< 1.5
dB
5.50 MHz
< 0.05 to 5.25 MHz
< 0.10 to 5.50 MHz
550 ± 5 ns
< 6 ns to 5.50 MHz
> 12
dB
Luminance Post
Sinx/x
75
13.50 MHz
< 4.5
dB
5.50 MHz
< 0.05
1
to 5.25 MHz
< 0.10
1
to 5.50 MHz
556 ± 5 ns
< 6 ns to 5.50 MHz
> 12
dB
1
Chrominance Pre
Flat
75
6.75 MHz
Chrominance Post
Sinx/x
75
6.75 MHz
< 4.5
dB
2.2 MHz
<± 0.050
2
to 2.20 MHz
1060 ± 7 ns
<± 6 ns to 2.20 MHz
<± 12 ns to 2.40 MHz
2
> 6
dB
<
1.5
dB
2.20 MHz
<± 0.050 to 2.20 MHz
1051 ± 5 ns
<± 6 ns to 2.20 MHz
<±12 ns to 2.40 MHz
> 6
dB
Delay time
at 200 kHz
Group delay ripple
wrt delay at 200 kHz
Attenuation at
1
/
2
S.F.
wrt loss at 100 kHz
Start of stopband
Stopband attenuation
wrt loss at end of passband
8.00 MHz
> 40 dB
FL594
8.00 MHz
> 40 dB
FL595
4.00 MHz
> 40 dB
FL596
4.00 MHz
> 40 dB
FL597
Type number
DR00024B package
Type number
DR00003A package
FL400
FL470
FL423
FL471
1
2
Measured against sinx/x roll-off for a sampling frequency of 13.5 MHz.
Measured against sinx/x roll-off for a sampling frequency of 6.75 MHz.
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
Fara100d
Page 1 of 2
Sep-05(B)
FARADAY [ FARADAY TECHNOLOGY ]
