TFS70E

s70e.doc version 2.0 08/98 ______________________________________________________________________________________________________ VI TELEFILTER Filter Specification TFS 70 E 1/3 ______________________________________________________________________________________________________ Application Low insertion loss Radio communication Constant group delay SMD multilayer ceramic package, hermetically sealed Description typ. value Variation / Limitation Insertion loss ae 5 dB max 7 dB (Reference level) _____________________________________________________________________________ Centre frequency fo 70,2 MHz _____________________________________________________________________________ Characteristics Ambient temperature TA Input power level Source impedance Load impedance = 23 °C = 0 dBm = 50 Ω matching network = 50 Ω matching network 3 dB - band width 900 kHz min 700 kHz _____________________________________________________________________________ Relative attenuation arel fo ± 350 kHz 2 dB max 3 dB fo + 1,15 MHz ... fo + 1,65 MHz 26 dB min 20 dB fo 1,2 MHz ... fo - 1,65 MHz 26 dB min 20 dB fo + 1,65 MHz ... fo + 2 MHz 38 dB min 35 dB fo 1,65 MHz ... fo - 3 MHz 38 dB min 35 dB _____________________________________________________________________________ Group delay GD 1,35 µs Group delay ripple fo ± 350 kHz ± 125 ns max ± 175 ns _____________________________________________________________________________ Temperature coefficient TC 1st order - 72 ppm/K ______...