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B4926 Datasheet(PDF) 3 Page - EPCOS |
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B4926 Datasheet(HTML) 3 Page - EPCOS |
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3 / 5 page  3 Apr 02, 2003 SAW Components B4926 133,2 MHz Low-Loss Filter for Mobile Communication Data Sheet Characteristics Operating temperature range: T = -30 ˚C ... +80 ˚C Terminating source impedance: ZS = 1000 Ω || 135 nH Terminating load impedance: ZL = 1300 Ω || 170 nH 1) Temperature dependence of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2 Test matching network to 50 Ω (element values depend on PCB layout): min. typ. max. Nominal frequency fN — 133,20 — MHz Minimum insertion attenuation α min (excluding losses in matching circuit) 4,5 6,0 dB Amplitude ripple (p-p) ∆α fN - 100,0 kHz ... fN + 100,0 kHz — 0,4 1,0 dB Group delay ripple (p-p) ∆τ fN - 100,0 kHz ... fN + 100,0 kHz — 0,3 1,0 µs Relative attenuation (relative to α min) α rel fN - 30,00 MHz ... fN - 7,00 MHz 40 48 — dB fN - 7,00 MHz ... fN - 3,00 MHz 35 42 — dB fN - 3,00 MHz ... fN - 0,80 MHz 29 32 — dB fN - 0,80 MHz ... fN - 0,60 MHz 20 29 — dB fN - 0,60 MHz ... fN - 0,40 MHz 15 19 — dB fN - 0,40 MHz ... fN - 0,25 MHz 3 6,5 — dB fN + 0,25 MHz ... fN + 0,40 MHz 3 6,5 — dB fN + 0,40 MHz ... fN + 0,60 MHz 15 17 — dB fN + 0,60 MHz ... fN + 0,80 MHz 20 27 — dB fN + 0,80 MHz ... fN + 3,00 MHz 29 31 — dB fN + 3,00 MHz ... fN + 7,00 MHz 35 39 — dB fN + 7,00 MHz ... fN + 30,00 MHz 40 46 — dB Impedance within pass band Input: ZIN = RIN || CIN — 1000 ||10,3. — Ω || pF Output: ZOUT = ROUT || COUT — 1300 || 8,2 — Ω || pF Temperature coefficient of frequency 1) TCf — – 0,042 — ppm/K2 Frequency inversion point T0 —25 — ˚C Lp1 = 82 nH Ls2 = 27 nH Ls3 = 43 nH Lp4 = 82 nH |
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