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TFH44C Datasheet(PDF) 1 Page - Vectron International, Inc |
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TFH44C Datasheet(HTML) 1 Page - Vectron International, Inc |
1 / 5 page TFH44C.doc version 1.2 13.03.01 VI TELEFILTER Filter Specification TFH 44 C 1/5 VI TELEFILTER Vectron International, Inc. Potsdamer Straße 18 267 Lowell Road D 14 513 TELTOW / Germany Hudson, NH 03051 / USA Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30 Tel: (603) 598-0070 Fax: (603) 598-0075 E-Mail: tft@telefilter.com E-Mail: vti@vtinh.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: 25 °C Input power level: 10 dBm Terminating impedances for input: 50 Ω || 0 pF for output: 50 Ω || 0 pF Characteristics Remark: Reference level for the relative attenuation arel of the TFH 44C is the insertion loss. The insertion loss ae is defined as the insertion loss at the nominal frequency fN . 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 temperature coefficient of frequency Tcf is valid for both the reference frequency fc and the frequency response of the filter on the operating temperature. D a t a typ. value tolerance/limit Insertion loss ae 22,6 dB max. 24,0 dB (Reference level) Nominal frequency fN - 44,0 MHz Centre frequency fC 44,0 MHz - Passband PB fN ± 2,8 MHz Passband variation p-p 0,45 dB 0,60 dB 3 dB bandwidth BW 8,11 MHz min. 8,00 MHz Relative attenuation arel fN ± 4,00 MHz max. 3 dB fN ± 4,80 MHz ......... fN ± 15 MHz 42 dB min. 40 dB Group delay variation in PB 55 ns max. 70 ns Temperature coefficient of frequency ( Tcf ) -75 ppm/K Frequency deviation of fc over temperature T: ∆fc(Hz) = Tcf(ppm/K) x (T - TA) x fCAT (MHz) Operating temperature 25 °C Storage temperature range - 25..... + 85 °C Generated: Checked / approved: |
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