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X7255D Datasheet(PDF) 3 Page - EPCOS |
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X7255D Datasheet(HTML) 3 Page - EPCOS |
3 / 9 page 3 Dec 08, 2003 SAW Components X 7255 D 36,00 MHz Bandpass Filter Data Sheet Characteristics of channel 1 (switching 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 36,00 MHz 18,9 20,4 21,9 dB following data Pass bandwidth α rel < 1,5 dB B1,5dB — 7,1 — MHz α rel < 3 dB B3dB — 7,4 — MHz α rel < 15 dB B15dB — 8,4 — MHz α rel < 30 dB B30dB — 8,8 — MHz Relative attenuation α rel Adjacent picture carrier 30,75 MHz 36,0 41,0 — dB Adjacent sound carrier 40,25 MHz 14,0 18,0 — dB 40,75 MHz 36,0 50,0 — dB 41,00 MHz 32,0 44,0 — dB 41,25 MHz 36,0 51,0 — dB Lower sidelobe 25,00 ... 31,30 MHz 32,0 37,0 — dB Upper sidelobe 40,70 ... 45,00 MHz 33,0 38,0 — dB Reflected wave signal suppression 1,2 µs ... 6,0 µs after main pulse 40,0 48,0 — dB (test pulse 250 ns, carrier frequency 36,00 MHz) Feedthrough signal suppression 1,3 µs ... 1,2 µs before main pulse — 56,0 — dB (test pulse 250 ns, carrier frequency 36,00 MHz) Group delay ripple (p-p) ∆τ 32,40 ... 39,60 MHz — 50 — ns Impedance at 36,00 MHz Input: ZIN = RIN || CIN — 1,7 ||18,1 — k Ω || pF Output: ZOUT = ROUT || COUT — 2,0 || 4,8 —k Ω || pF Temperature coefficient of frequency TCf — –72 — ppm/K |
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