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B8740 Datasheet(PDF) 5 Page - EPCOS |
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B8740 Datasheet(HTML) 5 Page - EPCOS |
5 / 9 page 5 September 22, 2010 B8740 832.0 / 911.5 MHz SAW Components SAW band–stop filter Data Sheet Please read cautions and warnings and important notes at the end of this document. Characteristics (including losses in the matching network) Temperature range for specification: T = –30 ˚C to +85 ˚C Terminating source impedance: ZS =50 Ω and matching network Terminating load impedance: ZL =50 Ω and matching network Matching network (element values depend on PCB layout) min. typ. @ 25 ˚C max. Nominal center frequency fN — 832.0 911.5 — MHz Minimum insertion attenuation α min 470.00 ... 770.00 MHz — 1.1 1.3 dB Maximum insertion attenuation α max 470.00 ... 710.00 MHz — 1.7 2.2 dB 710.00 ... 770.00 MHz — 2.7 4.2 dB Attenuation α 90.00 ... 222.00 MHz 14.0 17.0 — dB 824.00 ... 840.00 MHz 36.0 43.0 — dB 898.00 ... 925.00 MHz 40.0 46.0 — dB 1427.90 ... 1452.90 MHz 48.0 53.0 — dB 1749.90 ... 1784.90 MHz 45.0 50.0 — dB 1920.00 ... 1980.00 MHz 46.0 51.0 — dB Group delay ripple (p-p) ∆τ 470.00 ... 770.00 MHz —6 — ns Ls1 = 22 nH Lp2 = 36 nH Ls3 = 16 nH Cs4 = 0.7 pF Q factor of inductors: 40 @ 770 MHz Lp2 Ls1 Ls3 14 3 2 Cs4 |
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