FF...UD SERIES
GENERAL PURPOSE LP FILTER
STEEPNESS FACTOR 1.35
This range of 7-pole Elliptical Function Low Pass Filters is similar to a type which has been successfully used
in broadcasting for many years but is offered in a small size with improved group delay and amplitude ripple.
The filters are corrected for Group Delay distortion over approx. 95% of the passband and for loss distortion
over the entire passband. Degradation of a composite video signal is minimal when a 4.5 MHz or 5.5 MHz
filter is selected for a 525 or 625 line T.V. system.
Order Code
FF0200UD
FF0250UD
FF0300UD
FF0350UD
FF0400UD
FF0450UD
FF0500UD
FF0550UD
FF0600UD
FF0650UD
FF0700UD
FF0750UD
FF0800UD
FF0850UD
FF0900UD
FF0950UD
FF1000UD
End of Passband
MHz
Start of Stopband
MHz
Group Delay Ripple
ns max
Delay Time
ns
2.00
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
6.50
7.00
7.50
8.00
8.50
9.00
9.50
10.00
2.70
3.38
4.05
4.73
5.40
6.08
6.75
7.43
8.10
8.78
9.45
10.13
10.80
11.48
12.15
12.83
13.50
25.0
20.0
17.0
15.0
13.0
11.0
10.0
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.5
5.0
1575
1260
1050
900
786
700
630
573
525
485
450
420
394
370
350
332
315
This range may be extended up to 30 MHz. Filters with other end of passband frequencies within the range can be
supplied at no extra cost.
Order as FF****UD inserting the frequency required in place of the asterisk eg for 5.23 MHz FF0523UD.
Other data
Impedance
75 ohms
Stopband attenuation wrt 100 kHz
> 40 dB
Amplitude ripple in passband
< 0.05 dB
Video performance for filters of 5.0 MHz (4.5 MHz for 525 line) and above.
Pulse and bar: K - rating
< 0.5%
Luminance/Chrominance Gain inequality (20T)
< 2%
Luminance/Chrominance Delay inequality
< 10 ns
Aqueous Washable
No
Package
DR00065B
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA039d
Page 1 of 2
Dec-99(C)
FARADAY [ FARADAY TECHNOLOGY ]
