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B3895 Datasheet(PDF) 3 Page - EPCOS |
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B3895 Datasheet(HTML) 3 Page - EPCOS |
3 / 6 page 3 Aug 25, 2003 SAW Components B3895 204,0 MHz Low-Loss Filter Data Sheet Characteristics Operating temperature range: T = 0 .. 70 ˚C Terminating source impedance: ZS =50 Ω and matching network Terminating load impedance: ZL =50 Ω and matching network 1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2) min. typ. max. Nominal frequency fN — 204,0 — MHz Minimum insertion attenuation α min — 9,0 10,0 dB Pass bandwidth α rel ≤ 1,0 dB B1dB — 700 — kHz α rel ≤ 3,0 dB B3dB — 1150 — kHz Amplitude ripple (p-p) ∆α fN ± 250 kHz — 0,5 1,0 dB Absolute group delay τ @ fN — 0,8 — µs Group delay ripple (p-p) ∆τ fN ± 250 kHz — 30 100 ns Relative attenuation (relative to α min) α rel fN − 10,0 MHz ... fN − 2,0 MHz 45 48 — dB fN + 2,0 MHz ... fN + 3,5 MHz 45 50 — dB fN + 3,5 MHz ... fN + 4,5 MHz 44 46 — dB fN + 4,5 MHz ... fN + 10,0 MHz 45 48 — dB Temperature coefficient of frequency 1) TCf — –0,036 — ppm/K2 Turnover temperature T0 —35 — ˚C |
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