SL1000A - Faraday Technology

FARA043d.doc Page 1 of 2 May-01(B)

STEEPNESS FACTOR 1.40

This range of 7-pole Elliptical Function Low Pass Filters is intended for bandwidth limitation with minimal distortion

of the transmitted signal. The filters are corrected for Group Delay distortion over approx. 92% 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. Specifically the 14.0 MHz filter has become popular in

COFDM systems to band limit 8.0 MHz signals centred on 9.143 MHz.

Order Code End of Passband Start of Stopband Group Delay Ripple Delay Time

MHz MHz ns max ns

SL0200A 2.00 2.80 40 785

SL0250A 2.50 3.50 30 628

SL0300A 3.00 4.20 25 523

SL0350A 3.50 4.90 25 448

SL0400A 4.00 5.60 20 392

SL0450A 4.50 6.30 20 349

SL0500A 5.00 7.00 15 314

SL0550A 5.50 7.70 15 285

SL0600A 6.00 8.40 15 262

SL0650A 6.50 9.10 12 242

SL0700A 7.00 9.80 12 224

SL0750A 7.50 10.50 10 209

SL0800A 8.00 11.20 10 196

SL0850A 8.50 11.90 10 185

SL0900A 9.00 12.60 10 174

SL0950A 9.50 13.20 10 165

SL1000A 10.00 14.00 10 157

SL1400A 14.00 19.60 8 115

This range may be extended down to 0.5 MHz and up to 20 MHz. Filters with other end of passband frequencies

within the range can be supplied at no extra cost.

Order as SL****A inserting the frequency required in place of the asterisk eg for 5.23 MHz SL0523A.

Other data Impedance 75 ohms

Insertion Loss < 1.5 dB

Stopband attenuation wrt 100 kHz > 40 dB

Amplitude ripple in passband < 0.3 dB

Video performance for filters of 5.0 MHz (4.5 MHz for 525 line) and above.

Pulse and bar: K - rating < 1 %

Luminance/Chrominance Gain inequality (20T) < 3 %

Luminance/Chrominance Delay inequality < 10 ns

Aqueous Washable Yes

Package DR00005A

SL...A SERIES

GENERAL PURPOSE VIDEO FILTER