? faraday technology. as part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice fara095d page 1 of 2 sep - 05 (c) the oc series range of video oversampling smd analogue filters has be en 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 attenuat ion 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 . surface mount compatible 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 manufacturing facilities to av oid the large production costs associated with the presently available through - hole packages. the faraday oc range of oversampling filters can be used in surface mount assembly lines allowing vacuum pick up and reflow. in order to pres erve the integrity of the signal these filters have a good amplitude and group delay characteristics in the passband which meet requirements of ccir601 but due to the above considerations do not have significant attenuation below 21 mhz. order code ocysa OCYFA occsa occfa impedance 150 w 150 w 150 w 150 w sinx/x correction yes no yes no 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 (db) < 0.05 to 5.5 mhz < 0.05 to 5.5 mhz < 0.1 to 5.75 mhz < 0.1 to 5.75 mhz < 0.1 to 2.75 mhz < 0.1 to 2.75 mhz g.d. ripple < 6 ns < 6 ns < 12 ns < 12 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 55 ns 58 ns 110 ns 116 ns aqueous washable yes yes yes yes smd reflow limitations refer to data sheet fara309 oc seri e s video oversampling s md filters
package detail faraday technology ltd. tel: + 44 (0)1 782 661501 croft road industrial estate, fax: + 44 (0)1782 630101 newcastle, staffordshire email: sales@faradaytech.co.uk st5 0qz. england. web site: http://www.faradaytech.co.uk fara095d page 2 of 2 sep - 05 (c) package dr00325a dr00325a dr00325a dr00325a
package detail faraday technology ltd. tel: + 44 (0)1 782 661501 croft road industrial estate, fax: + 44 (0)1782 630101 newcastle, staffordshire email: sales@faradaytech.co.uk st5 0qz. england. web site: http://www.faradaytech.co.uk fara095d page 2 of 2 sep - 05 (c) 7 o/all 0,35 0,7 17,78 (0.7) 2,54 (0.1) typ 25,6 (1.01) 3,91 (0.15) 9 , 9 5 ( 0 . 3 9 ) 0,46 (0.018) typ 1 2 , 8 ( 0 . 5 0 4 ) 0 , 8 5 ( 0 . 0 3 3 ) notes. a. surface mount terminals;- 0,254 alloy 42 5-10 bright sn90 tin-plating per mil-t-10727, meeting solderability requirements of mil std 202f method 208f. b. pin assignments;- pin 1 = input. pin 8 = output. pin 7 = open circuit. connected internally. all remaining pins = gnd. drg no: title: third angle projection all dimensions in millimetres (inches). gen tolerance 0,05 (0.002) unless otherwise stated. do not scale ? faraday technology ltd croft road newcastle-u-lyme st5 0qz england tel (044) 01782 661501 fax 630101 template: dt00291 date: 25/09/01 change note no; dr00325a filter assy outline a 4 d r g b l k . c d r top view 1 8 9 16 date: 25/09/01 auth: c snell
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