FULLY BUFFERED NTSC POST FILTER AH844 The AH844 fully buffered NTSC post filter is a low cost post D-A filter designed to complement the AH842 pre filter for NTSC applications using the 4 x FSC oversampled format. Interfacing to the system is simplified with high input and low output impedance op-amp buffer stages. Filter Shape Lowpass Passband Shape Sinx/x Sampling Frequency 14.318 MHz Gain - 0.2 dB + 0.2 dB +5.8 dB + 0.2 dB End Of Passband 4.4 MHz Passband Amplitude Ripple 0.25 dB max Loss at 6.75 MHz wrt 4.4 MHz 30 dB + 2 dB Start Of Stopband 7.0 MHz Stopband Attenuation wrt 4.4 MHz Group Delay Ripple wrt 200 kHz 40 dB min to 20 MHz 35 dB min to 50 MHz + 10.0 ns max to 4.3 MHz Delay Time at 200 kHz 340 ns + 10 ns Typical Current 30 mA (15 mA per rail at + 5 v) Input Impedance 2 MΩ typical Aqueous Washable Yes Package DR00032A with pin 6 open with pin 6 gnd © Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice FARA024d Page 1 of 2 Sep-05(B) PACKAGE DETAIL Faraday Technology Ltd. Croft Road Industrial Estate, Newcastle, Staffordshire ST5 0QZ. England. FARA024d 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)