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Filename: tfs 140an.doc Version 1.2 14.11.2006 VI TELEFILTER Filter specification TFS 140AN 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: 35 Ω || -66 pF Output: 22 Ω || -78 pF Characteristics Remark: The nominal frequency fN is fixed at 140,0 MHz. The insertion loss ae is defined as loss value determined at fN. Reference level for the relative attenuation arel of the TFS 140AN is the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 20 dB filter attenuation level relative to the insertion loss ae. All specified data are met within the operating temperature range. D a t a typ. value tolerance / limit Insertion loss ae 7,2 dB max. 10,0 dB (reference level) Nominal frequency fN - 140,0 MHz Centre frequency fC 140 MHz - Passband PB 14,8 MHz fN ± 4,8 MHz Pass band ripple 0,3 dB max. 1 dB Bandwidth BW 3 dB 16 MHz min. 12,0 MHz 30 dB 23 MHz max. 36,0 MHz Relative attenuation arel fN … fN ± 4,8 MHz 0,4 dB max. 1 dB fN ± 4,8 MHz ... fN ± 6,0 MHz 0,5 dB max. 3 dB fN - 130,0 MHz ... fN - 20,0 MHz 58 dB min. 40 dB fN + 20,0 MHz ... fN + 370,0 MHz 55 dB min. 40 dB Group delay ripple within PB p-p 36 ns max. 160 ns Input power level - max. 0 dBm Operating temperature range OTR - - 5 °C ... + 80°C Storage temperature range - - 55 °C ... + 80°C Temperature coefficient of frequency TCf ** -90 ppm/K *) 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. **) ∆f(Hz) = TCf(ppm/K) x (T-T0) x fTo(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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