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B39389-K7257-M100 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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B39389-K7257-M100 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
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3 / 9 page  3 Jan 27, 2003 SAW Components K 7257 M 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: TA = 25 ˚C Terminating source impedance: ZS = 50 Ω Terminating load impedance: ZL = 2 kΩ || 3 pF min. typ. max. Insertion attenuation α Reference level for the 37,40 MHz 15,1 16,6 18,1 dB following data Relative attenuation α rel Picture carrier 38,90 MHz 5,0 6,0 7,0 dB Picture carrier 33,90 MHz — 7,9 — dB Color carrier 34,47 MHz -0,5 0,5 1,5 dB Sound carrier 33,40 MHz 28,0 43,0 — dB NICAM sound carrier 33,05 MHz — 36,0 — dB Adjacent picture carrier 30,90 MHz 45,0 60,0 — dB 31,90 MHz 47,0 60,0 — dB 32,40 MHz 45,0 60,0 — dB 40,15 MHz 39,0 52,0 — dB Adjacent sound carrier 40,40 MHz 40,0 53,0 — dB 41,40 MHz 40,0 50,0 — dB Lower sidelobe 25,00 ... 31,90 MHz 40,0 46,0 — dB Upper sidelobe 40,40 ... 45,00 MHz 36,0 43,0 — dB Reflected wave signal suppression 1,2 µs ... 6,0 µs after main pulse 42,0 52,0 — dB (test pulse 250 ns, carrier frequency 37,40 MHz) Feedthrough signal suppression 1,3 µs ... 1,2 µs before main pulse 50,0 56,0 — dB (test pulse 250 ns, carrier frequency 37,40 MHz) Group delay predistortion ∆τ ns (reference frequency 38,90 MHz) 36,90 MHz — –50 — ns 34,47 MHz —50 — ns Impedance at 37,40 MHz Input: ZIN = RIN || CIN — 1,2 ||18,6 — k Ω || pF Output: ZOUT = ROUT || COUT — 1,8 || 4,2 —k Ω || pF Temperature coefficient of frequency TCf — –72 — ppm/K |
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