saw multimedia filters series/type: k7257d the following products presented in this data sheet are being withdrawn. ordering code substitute product date of withdrawal deadline last orders last shipments b39389k7257n201 2011-01-14 2011-09-30 2012-09-30 for further information please contact your nearest epcos sales office, which will also support you in selecting a suitable substitute. the addresses of our worldwide sales network are presented at www.epcos.com/sales.
2 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet 12345 13,7 4,8 4x 2,54 0,38 3,4 2,4 0,65 duroplast package sip5d standard n b/g n l/l n m/n features n tv if filter switchable from b/g,l/l mode to m/n mode n b/g, l/l mode with nyquist slope and sound suppression n highly reduced group delay predistortion as compared to standard b/g, half n m/n mode with nyquist slope and sound sup- pression n constant group delay n standard ic package terminals n tinned cufe alloy dimensions in mm, approx. weight 0,5 g pin configuration 1 input 2 switching input 3 chip carrier C ground 4 output 5 output type ordering code marking and package according to packing according to k 7257 d B39389-K7257-N201 c61157-a1-a21 f61074-v8049-z000 maximum ratings operable temperature range t a C25/+65 ?c storage temperature range t stg C40/+85 ?c dc voltage v dc 5 v between any terminals ac voltage v pp 10 v between any terminals 1 2 3 5 4
3 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet characteristics in b/g, l/l mode (switching input pin 2 connected to ground) reference temperature: t a = 25 ?c terminating source impedance: z s = 50 w terminating load impedance: z l = 2 k w || 3 pf min. typ. max. insertion attenuation a reference level for the 37,40 mhz 15,1 16,6 18,1 db following data relative attenuation a rel picture carrier 38,90 mhz 5,1 6,1 7,1 db picture carrier 33,90 mhz 7,8 db color carrier 34,47 mhz -0,5 0,5 1,5 db sound carrier 33,40 mhz 29,0 39,0 db 33,45 mhz 23,0 32,0 db nicam sound carrier 33,05 mhz 35,0 db adjacent picture carrier 30,90 mhz 47,0 57,0 db 31,90 mhz 48,0 57,0 db 32,40 mhz 48,0 60,0 db 40,15 mhz 41,0 52,0 db adjacent sound carrier 40,40 mhz 45,0 56,0 db 41,40 mhz 40,0 46,0 db lower sidelobe 25,00 ... 31,90 mhz 42,0 47,0 db upper sidelobe 40,40 ... 45,00 mhz 37,0 42,0 db reflected wave signal suppression 1,2 m s ... 6,0 m s after main pulse 42,0 52,0 db (test pulse 250 ns, carrier frequency 37,40 mhz) feedthrough signal suppression 1,3 m s ... 1,2 m s before main pulse 56,0 db (test pulse 250 ns, carrier frequency 37,40 mhz) group delay predistortion dt ns (reference frequency 38,90 mhz) 36,90 mhz C50 ns 34,47 mhz 50 ns impedance at 37,40 mhz input: z in = r in || c in 1,2 ||17,0 k w || pf output: z out = r out || c out 1,9 || 4,5 k w || pf temperature coefficient of frequency tc f C72 ppm/k
4 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet characteristics in m/n mode (switching input pin 2 connected to pin 1) reference temperature: t a = 25 ?c terminating source impedance: z s = 50 w terminating load impedance: z l = 2 k w || 3 pf min. typ. max. insertion attenuation a reference level for the 37,40 mhz 14,8 16,3 17,8 db following data relative attenuation a rel picture carrier 38,90 mhz 5,2 6,2 7,2 db color carrier 35,32 mhz 1,5 2,5 3,5 sound carrier 34,40 mhz 29,0 36,0 db adjacent picture carrier 32,90 mhz 42,0 55,0 db adjacent sound carrier 40,40 mhz 42,0 56,0 db lower sidelobe 25,00 ... 32,90 mhz 38,0 46,0 db upper sidelobe 40,40 ... 45,00 mhz 34,0 39,0 db reflected wave signal suppression 1,2 m s ... 6,0 m s after main pulse 42,0 52,0 db (test pulse 250 ns, carrier frequency 37,40 mhz) feedthrough signal suppression 1,3 m s ... 1,2 m s before main pulse 50,0 db (test pulse 250 ns, carrier frequency 37,40 mhz) group delay ripple (p-p) dt 35,32 ... 38,90 mhz 50 ns impedance at 37,40 mhz input: z in = r in || c in 1,3 ||19,0 k w || pf output: z out = r out || c out 1,9 || 4,5 k w || pf temperature coefficient of frequency tc f C72 ppm/k
5 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet frequency response in b/g, l/l mode
6 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet frequency response in b/g, l/l mode time domain response in b/g, l/l mode
7 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet frequency response in m/n mode
8 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet frequency response in m/n mode time domain response in m/n mode
9 dec 08, 2003 saw components k 7257 d 33,90 mhz and 38,90 mhz if filter for video / multistandard applications data sheet published by epcos ag surface acoustic wave components division, saw ce mm pd p.o. box 80 17 09, 81617 munich, germany ? epcos ag 2003. reproduction, publication and dissemination of this brochure and the informa- t ion contained therein without epcos prior express consent is prohibited. purchase orders are subject to the general conditions for the supply of products and services of t he electrical and electronics industry recommended by the zvei (german electrical and electronic manufacturers association), unless otherwise agreed. t his brochure replaces the previous edition. for questions on technology, prices and delivery please contact the sales offices of epcos ag or t he international representatives. due to technical requirements components may contain dangerous substances. for information on t he type in question please also contact one of our sales offices.
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