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K2955M Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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K2955M Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
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3 / 6 page  3 May 08, 2001 SAW Components K 2955 M 38,90 MHz IF Filter for Intercarrier Applications Data Sheet Characteristics 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 15,7 17,2 18,7 dB following data Relative attenuation α rel Picture carrier 38,90 MHz 4,7 5,7 6,7 dB Color carrier 34,47 MHz 2,6 3,6 4,6 dB Sound carrier 32,40 MHz 18,5 20,0 21,5 dB 33,40 MHz 19,4 20,4 — dB Adjacent picture carrier 30,90 MHz 48,0 66,0 — dB Adjacent sound carrier 40,40 MHz 43,0 58,0 — dB 41,40 MHz 42,0 53,0 — dB Lower sidelobe 25,00 ... 30,90 MHz 43,0 52,0 — dB Upper sidelobe 40,40 ... 45,00 MHz 38,0 44,0 — dB Reflected wave signal suppression 1,2 µs ... 6,0 µs after main pulse 42,0 54,0 — dB (test pulse 250 ns, carrier frequency 37,40 MHz) Feedthrough signal suppression 1,2 µs ... 1,1 µs before main pulse 50,0 56,0 — dB (test pulse 250 ns, carrier frequency 37,40 MHz) Group delay predistortion ∆τ (reference frequency 38,90 MHz) 36,50 MHz — –65 — ns 34,47 MHz — 0 — ns Impedance at 37,40 MHz Input: ZIN = RIN || CIN — 2,2 ||10,7 — k Ω || pF Output: ZOUT = ROUT || COUT — 3,1 || 2,8 —k Ω || pF Temperature coefficient of frequency TCf — –72 — ppm/K |
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