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B1708 Datasheet(PDF) 3 Page - EPCOS |
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B1708 Datasheet(HTML) 3 Page - EPCOS |
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3 / 10 page  3 May 16, 2006 B1708 72.54 MHz SAW Components SAW IF filter Data sheet Please read cautions and warnings and important notes at the end of this document. Characteristics Temperature range for specification: T = –40 ˚C to (+85 ˚C) +105 ˚C Terminating source impedance: ZS =27 Ω and matching network Terminating load impedance: ZL = 1 k Ω and matching network min. typ. @ 25 ˚C max. Nominal frequency fN — 72.54 — MHz Minimum insertion attenuation1) 1) Including losses in the matching network α min — 14.5 16.0 dB Maximum voltage gain source – load (VL/VS) α vgsl –4.2 –2.7 — dB Amplitude ripple (p-p) ∆α fN ± 1.85 MHz — 1.0 (1.3) 1.5 dB Pass bandwidth α rel ≤ 1.5 dB B1.5dB — 4.0 — MHz α rel ≤ 3 dB B3dB — 4.3 — MHz α rel ≤ 15 dB B15dB — 5.7 5.9 MHz α rel ≤ 30 dB B30dB — 6.6 7.0 MHz Mean attenuation (relative to α min) α rel Upper sidelobe 86.47 ... 91.53 MHz 48.0 53.0 — dB Relative attenuation (relative to α min) α rel Lower sidelobe 50.00 ... 65.00 MHz 40.0 44.0 — dB 65.00 ... 66.48 MHz 33.0 38.0 — dB 66.48 ... 68.08 MHz 32.0 36.0 — dB Upper sidelobe 77.30 ... 78.60 MHz 32.0 36.0 — dB 78.60 ... 86.47 MHz 36.0 41.0 — dB 86.47 ... 91.53 MHz 44.0 48.0 — dB 91.53 ... 95.21 MHz 44.0 48.0 — dB 95.21 ... 100.00 MHz 46.0 50.0 — dB Group delay ripple (p–p) ∆τ Aperture 50 kHz fN ± 1.85 MHz — 210 — ns Temperature coefficient of frequency TCf — –18 — ppm/K |
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