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| TFS52.eng __________________________________________________________________________________ SAW - Filter Specification TFS 52 1/2 __________________________________________________________________________________ 05/96 1. Measurement condition Ambient temperature: Input power level: Source impedance: Load impedance: 23 0 340 2075 C dBm | | - 18,8 pF | | - 15,9 pF 2. Characteristics Remark: Reference level for the relative attenuation arel of the TFS 52 is the minimum of the pass band attenuation amin. The minimum of the pass band attenuation amin is defined as the insertion loss ae. The centre frequency fo is the arithmetic mean value of the upper and lower frequencies at the 0,5 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 52 MHz without tolerance or limit. The given values for the relative attenuation and for the phase linearity have to be reached at the frequencies given below also if the centre frequency fo is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance of 10 kHz for the centre frequency fo . This frequency shift is excluded both for the frequencies and limit lines given below. typ. value Variation / Limitation Data __________________________________________________________________________________ N __________________________________________________________________________________ o __________________________________________________________________________________ Insertion loss ae (Reference level) Change of insertion loss in the operating temperature range Pass band Pass band ripple max 15 dB max 1 dB Centre frequency f 52,0 MHz max 10 kHz Nominal frequency f 52,0 MHz __________________________________________________________________________________ __________________________________________________________________________________ Relativ attenuation fN 500 fN 700 fN 900 arel min 30 min 40 min 45 dB dB dB kHz kHz kHz ... fN 5 MHz phi max 4 deg ap-p min fN 135 kHz max 0,5 dB __________________________________________________________________________________ Phase linearity p-p __________________________________________________________________________________ Ripple of phase linearity in the pass band phi Operating temperature range Storage temperature range __________________________________________________________________________________ f __________________________________________________________________________________ *) f(Hz) = TCf(ppm/K) x (T) x fTo(MHz) Temperature coefficient of frequency TC *) - 0.05 ppm/K - 0 C ... + 75 C - 40 C ... + 75 C _________________________________________________________________________________ TELE FILTER tft GmbH / Potsdamer Strae 18 / 14 513 TELTOW Phone: (+3328) 47 84 52 / Facsimile: (+3328) 47 84 30 TFS52.eng __________________________________________________________________________________ SAW - Filter Specification TFS 52 2/2 __________________________________________________________________________________ 05/96 3. Limit lines for magnitude and phase linearity Relative attenuation 0 dB (reference level is ae ) -0,5 dB Phase linearity Ripple max 4 deg p-p -30 dB -40 dB -45 dB fN - 135 kHz fN - 500 kHz fN - 700 kHz fN - 900 kHz fN + 135 kHz fN + 500 kHz fN + 700 kHz fN + 900 kHz fN - 135 kHz fN + 135 kHz fN = 52 MHz 4. Construction and pin connection __________________________________________________________________________________ TELE FILTER tft GmbH / Potsdamer Strae 18 / 14 513 TELTOW Phone: (+3328) 47 84 52 / Facsimile: (+3328) 47 84 30 |
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