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TFS498 Datasheet(PDF) 1 Page - Vectron International, Inc |
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TFS498 Datasheet(HTML) 1 Page - Vectron International, Inc |
1 / 5 page Filename: tfs 498.doc Version 1.3 29.07.2004 VI TELEFILTER Filter specification TFS 498 1/5 Tele Filter GmbH Potsdamer Straße 18 D 14 513 TELTOW / Germany Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 E-Mail: tft@telefilter.com VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Measurement condition Ambient temperature: 23 °C Input power level: 0 dBm Terminating impedance: Input: 200 Ω Output: 200 Ω Characteristics Remark: The reference level for the relative attenuation arel of the TFS 498 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 fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 498,00 MHz without any tolerance. The given values for both the relative attenuation arel and the group delay ripple have to be achieved at the frequencies given below even if the centre frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre frequency fc. D a t a typ. value tolerance / limit Insertion loss ae 3,2 max. 5,0 dB (reference level) Nominal frequency fN 498,00 MHz Centre frequency fC 498,00** MHz Passband fN ± 8,4 MHz Pass band ripple 2,0 dB max. 3,0 dB Relative attenuation arel fN … fN ± 8,4 MHz 2,0 max. 3,0 dB fN ± 30,0 MHz … fN ± 38,0 MHz 33,0 min. 28,0 dB fN ± 38,0 MHz … fN ± 100,0 MHz 50,0 min. 40,0 dB Operating temperature range OTR 0 °C ... + 80°C Storage temperature range - 40 °C ... + 85°C Temperature coefficient of frequency TCf * -37 ppm/K *) at 40 °C operating temperature Generated: Checked / Approved: |
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