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TFS868 Datasheet(PDF) 1 Page - Vectron International, Inc |
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TFS868 Datasheet(HTML) 1 Page - Vectron International, Inc |
1 / 5 page Filename: tfs 868.doc Version 1.2 16.03.2005 VI TELEFILTER Filter specification TFS 868 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 Measurement condition Ambient temperature: 23 °C Input power level: 0 dBm Terminating impedance: * Input: 132 Ω || -2,2 pF Output: 132 Ω || -2,2 pF Characteristics Remark: Reference level for the relative attenuation arel of the TFS 868 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 on 868,39 MHz without tolerance. The given values for the relative attenuation arel have to be reached at the frequencies given below also 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 = amin 3,4 dB max. 4,7 dB (reference level) 3,1 dB max. 4,2 dB ** Nominal frequency fN 868,39 MHz Centre frequency fC 868,39 MHz Bandwidth BW 3 dB 1,2 MHz min. 600 kHz 3 dB 1,2 MHz min. 780 kHz** 6 dB 1,4 MHz min. 800 kHz 6 dB 1,4 MHz min. 980 kHz** Relative attenuation arel fN … fN - 390 kHz 0,8 dB max. 3 dB fN … fN + 210 kHz 0,8 dB max. 3 dB fN … fN ± 390 kHz 0,8 dB max. 3 dB** fN - 390 kHz … fN + 310 kHz 0,8 dB max. 6 dB fN ± 390 kHz … fN ± 490 kHz 1,6 dB max. 6 dB** fN - 3,37 MHz … fN - 18,39 MHz 33 dB min. 25 dB fN - 3,19 MHz … fN - 18,39 MHz 33 dB min. 25 dB** fN - 18,39 MHz … fN - 38,39 MHz 59 dB min. 32 dB fN - 38,39 MHz … fN - 168,39 MHz 54 dB min. 35 dB fN - 168,39 MHz … fN - 858,39 MHz 52 dB min. 50 dB fN + 2,61 MHz … fN + 6,11 MHz 39 dB min. 11 dB fN + 6,11 MHz … fN + 14,61 MHz 45 dB min. 22 dB fN + 14,61 MHz … fN + 31,61 MHz 33 dB min. 30 dB fN + 31,61 MHz … fN + 131,61 MHz 48 dB min. 35 dB Input power level - max. 0 dBm Operating temperature range OTR - - 45 °C ... + 90°C Storage temperature range - - 45 °C ... + 90°C Frequency inversion temperature 5 °C Temperature coefficient of frequency TCf *** -0,04 ppm/K² *) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as reference values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team. **) at ambient temperature ***) ∆fc(Hz) = Tcf(ppm/K²) x (To - TA) ² x fCAT (MHz) Generated: Checked / approved: 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. |
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