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TFS244B Datasheet(PDF) 1 Page - Vectron International, Inc |
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TFS244B Datasheet(HTML) 1 Page - Vectron International, Inc |
1 / 4 page tfs244b.eng version 1.1 06.01.02 ______________________________________________________________________________________________________ VI TELEFILTER Filter specification TFS244 B 1/4 ______________________________________________________________________________________________________ ______________________________________________________________________________________________________ VI TELEFILTER Vectron International, Inc. Potsdamer Straße 18 267 Lowell Road D 14 513 TELTOW / Germany Hudson, NH 03051 / USA Tel: (+49) 3328 4784-52 / 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: 23 C Input power level: 0 dBm terminating impedances: t.b.d, near 500 Ohm Construction and pin connection see page 2 Characteristics Remark: Reference level for the relative attenuation arel of the TFS 244 B 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 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 244 MHz without tolerance. The given values for the relative attenuation arel and for the group delay ripple 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 for the centre frequency fo. D a t a typ. value limit ______________________________________________________________________________________________________ Insertion loss ae = amin 3.5 dB max 5 dB (Reference level) ______________________________________________________________________________________________________ Norminal frequency fN 244 MHz - ______________________________________________________________________________________________________ In band ripple in fo ± 80 kHz - 1,0 dB ______________________________________________________________________________________________________ Relative attenuation arel 244,0 MHz ± 80 kHz max 3 dB 244,0 MHz ± 400 kHz ... 244,0 MHz ± 600 kHz min 25 dB 244,0 MHz ± 600 kHz ... 244,0 MHz ± 800 kHz min 40 dB 244,0 MHz ± 800 kHz ... 244,0 MHz ± 1,6 MHz min 45 dB 244,0 MHz ± 1,6 MHz ... 244,0 MHz ± 10 MHz min 50 dB ______________________________________________________________________________________________________ Group delay distortion GDD 244,0 MHz ± 80 kHz 1 µs max 1,5 µ s ______________________________________________________________________________________________________ Operating temperature range - 20 C ... + 85 C ______________________________________________________________________________________________________ Temperature coefficient of frequency TC ca. - 0,036 ppm/K² ______________________________________________________________________________________________________ Frequency inversion temperature + 20 ... + 30 C ______________________________________________________________________________________________________ generated: checked / approved: |
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