? faraday technology. as part of continual product improvement the specif ications, details and dimensions shown in this publication are subject to change without notice fara024d page 1 of 2 sep - 05 (b) 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 stag es. filter shape lowpass passband shape sinx/x sampling frequency 14.318 mhz gain - 0.2 db + 0.2 db with pin 6 open +5.8 db + 0.2 db with pin 6 gnd end of passband 4.4 mhz passband amplitude ripple 0.25 db max loss at 6.75 mhz wrt 4.4 mhz 3 0 db + 2 db start of stopband 7.0 mhz stopband attenuation wrt 4.4 mhz 40 db min to 20 mhz 35 db min to 50 mhz group delay ripple wrt 200 khz + 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 m w typical aqueous washable yes package dr00032a AH844 fully buffered n tsc post filter
package detail faraday technology ltd. tel: + 44 (0)1782 661501 croft road industrial estate, fax: + 44 (0)1782 630101 newcastle, staffordshire email: sal es@faradaytech.co.uk st5 0qz. england. web site: http://www.faradaytech.co.uk fara024d page 2 of 2 sep - 05 (b)
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