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 • Flat and Sinx/x versions • Tight passband ripple specification • Aqueously washable versions available Filter type Luminance Pre Luminance Post Chrominance Pre Chrominance Post Passband Shape Flat Sinx/x Flat Sinx/x Impedance (ohms) 75 75 75 75 Sampling Frequency 13.50 MHz 13.50 MHz 6.75 MHz 6.75 MHz Insertion loss at 100 kHz < 1.5 dB < 4.5 dB < 1.5 dB < 4.5 dB End of Passband 5.50 MHz 5.50 MHz 2.20 MHz 2.2 MHz < 0.05 to 5.25 MHz < 0.101 to 5.50 MHz <± 0.050 to 2.20 MHz <± 0.0502 to 2.20 MHz wrt 100 kHz < 0.05 to 5.25 MHz < 0.10 to 5.50 MHz Delay time at 200 kHz 550 ± 5 ns 556 ± 5 ns 1051 ± 5 ns 1060 ± 7 ns Group delay ripple < 6 ns to 5.50 MHz < 6 ns to 5.50 MHz > 12 dB > 12 dB <± 6 ns to 2.20 MHz <±12 ns to 2.40 MHz > 6 dB <± 6 ns to 2.20 MHz <± 12 ns to 2.40 MHz 2 > 6 dB Start of stopband 8.00 MHz 8.00 MHz 4.00 MHz 4.00 MHz Stopband attenuation > 40 dB > 40 dB > 40 dB > 40 dB Type number DR00024B package FL594 FL595 FL596 FL597 Type number DR00003A package FL400 FL470 FL423 FL471 Amplitude ripple (dB) 1 wrt delay at 200 kHz Attenuation at 1/2 S.F. 1 wrt loss at 100 kHz wrt loss at end of passband 1 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. 2 © 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) PACKAGE DETAIL Faraday Technology Ltd. Croft Road Industrial Estate, Newcastle, Staffordshire ST5 0QZ. England. Fara100d Tel: Fax: Email: Web site: Page 2 of 2 + 44 (0)1782 661501 + 44 (0)1782 630101 [email protected] http://www.faradaytech.co.uk Sep-05(B)