? faraday tech nology. as part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice fara366d page 1 of 3 sep - 05 (a) reflowable washable surface mount compatibility small size, low cost flat or sinx/x versions luminance and chrominance versions with reduced analogue filter costs resulting from oversampling techniques, there is an increased need for manufact uring facilities to avoid the large production costs associated with the presently available through hole packages. the faraday re range of oversampling filters can be used in surface mount assembly lines allowing vacuum pick up and reflow (see page 2). th is range of analogue filters has been designed for use in conjunction with a half band interpolating/decimating filter such as the trw2242 or with the many encoder chips available which employ digital filtering and an output d to a converter. this type of digital filtering has good attenuation between the frequencies of fs/4 and 3fs/4 where fs is the master clock rate. when the normal clock rate of 27 mhz is used for the luminance channel the signal can be expected to have insignificant energy between 6.75 mhz and 20.25 mhz. in order to preserve the integrity of the signal these filters have a good amplitude and group delay characteristics in the passband, similar to the requirements of ccir601 but due to the above considerations do not have significant atte nuation below 21 mhz. order code: reyfa reysa recfa RECSA impedance 150 w 150 w 150 w 150 w sinx/x correction no yes no yes sampling freq. 27.0 mhz 27.0 mhz 13.5 mhz 13.5 mhz end of passband 5.75 mhz 5.75 mhz 2.75 mhz 2.75 mhz amp. ripple < 0.12 db < 0.25 db < 0.12 db < 0.30 db g.d. ripple < 6 ns < 10 ns < 12 ns < 20 ns start of stopband 21.5 mhz 21.5 mhz 10.75 mhz 10.75 mhz stopband atten. wrt 100 khz > 40 db > 40 db > 40 db > 40 db delay time nom. at 200 khz 30 ns 27 ns 58 ns 50 ns aq ueous washable yes yes yes yes package dr00274a dr00274a dr00274a dr00274a re ser i es video oversampling s md filte r s
? faraday technology. as part of continual product improvement the specifications, details and dimensions shown in this publication are subject to chan ge without notice fara366d page 2 of 3 sep - 05 (a) the re series filters have been successfully tested to the following reflow profile using a five zone ir/convection oven. belt speed =10in/min c p1 p2 p3 p4 rf set 260 200 200 300 320 260 200 200 300 320 surf systems reflow temp bar = 183 n n n above temp bar sec 89 0 0 max temp 224 0 0 ? left bar temp 180 0 0 right bar temp 183 0 0 avr slope c/sec 0.0 0.0 0.0 time between bars 95.70 secs note that the temperatures given are ?actual? temperatures not oven settings.
package detail faraday technology ltd. tel: + 44 (0)1782 661501 croft road industrial estate, fax: + 44 (0)1782 630101 newc astle, staffordshire email: sales@faradaytech.co.uk st5 0qz. england. web site: http://www.faradaytech.co.uk fara366d page 3 of 3 sep - 05 (a)
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