AH844

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 Passband Shape Sampling Frequency Gain End Of Passband Passband Amplitude Ripple Loss at 6.75 MHz wrt 4.4 MHz Start Of Stopband Stopband Attenuation wrt 4.4 MHz Group Delay Ripple wrt 200 kHz Delay Time at 200 kHz Typical Current Input Impedance Aqueous Washable Package Lowpass Sinx/x 14.318 MHz - 0.2 dB + 0.2 dB +5.8 dB + 0.2 dB 4.4 MHz 0.25 dB max 30 dB + 2 dB 7.0 MHz 40 dB min to 20 MHz 35 dB min to 50 MHz + 10.0 ns max to 4.3 MHz 340 ns + 10 ns 30 mA (15 mA per rail at + 5 v) 2 MΩ typical Yes DR00032A with pin 6 open with pin 6 gnd © F araday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice F ARA024d Page 1 of 2 Sep-05(B) PACKAGE DETAIL Faraday Technology Ltd. Croft Road Industrial Estate, Newcastle, Staffordshire ST5 0QZ. England. F ARA024d Tel: Fax: Email: Web site: Page 2 of 2 + 44 (0)1782 661501 + 44 (0)1782 630101 sales@faradaytech.co.uk http://www.faradaytech.co.uk Sep-05(B)