K7257M Datasheet | EPCOS

Features s TV IF filter switchable from B/G,L/L’ mode to M/N mode s B/G,L/L’ mode with Nyquist slope and sound suppression s Highly reduced group delay predistortion as pared to standard B/G, half s M/N mode with Nyquist slope and sound sup- pression s Constant group delay Dimensions in mm, approx. weight 1,0 g Terminals s Tinned Cu Fe alloy Pin configuration 1 2 3 4, 5 Input Switching input Chip carrier - ground Output 5 3 Type K 7257 M Ordering code B39389-K7257-M100 Marking and package according to C61157-A1-A15 Packing according to F61074-V8067-Z000 Maximum ratings Operable temperature range Storage temperature range DC voltage AC voltage TA Tstg VDC Vpp - 25/+65 - 40/+85 5 10 ˚C ˚C V V between any terminals between any terminals Jan 27, 2003 SAW ponents IF Filter for Video / Multistandard Applications Data Sheet Characteristics in B/G, L/L’ mode (switching input pin 2 connected to ground) Reference temperature: Terminating source impedance: Terminating load impedance: K 7257 M 33,90 MHz and 38,90 MHz TA = 25 ˚C ZS = 50 Ω ZL = 2 kΩ || 3 p F min. typ. 16,6 max. 18,1 d B Insertion attenuation Reference level for the following data Relative attenuation Picture carrier Picture carrier Color carrier Sound carrier NICAM sound carrier Adjacent picture carrier α 37,40 MHz αrel 38,90 33,90 34,47 33,40 33,05 30,90 31,90 32,40 40,15 40,40 41,40 25,00 ... 31,90 40,40 ... 45,00 MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz 5,0 - -0,5 28,0 - 45,0 47,0 45,0 39,0 40,0 40,0 40,0 36,0 42,0 6,0 7,9 0,5 43,0 36,0 60,0 60,0 60,0 52,0 53,0 50,0 46,0 43,0 52,0 7,0 - 1,5 - - - - - - - - - - - d B d B d B d B d B d B d B d B d B d B d B d B d B d B 15,1 Adjacent sound carrier Lower sidelobe Upper sidelobe Reflected wave signal suppression 1,2 µs ... 6,0 µs after main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) Feedthrough signal suppression 1,3 µs ... 1,2 µs before main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) Group delay predistortion...