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TFS426 Datasheet(PDF) 1 Page - Vectron International, Inc |
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TFS426 Datasheet(HTML) 1 Page - Vectron International, Inc |
1 / 4 page tfs426.doc version 1.1 04/99 _____________________________________________________________________________________________________ VI TELEFILTER Filter specfication TFS 426 - 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 Construction Ambient temperature: 23 °C see page 2 Input power level: 0 dBm Terminating impedances for input: 80 Ω || -2.5 pF. for output: 80 Ω || -2.5 pF External coil: 72 nH Characteristics Remark: Reference level for the relative attenuation arel of the TFS 426 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 426,4 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 Tolerance / Limit _____________________________________________________________________________________________________ Nominal Frequency fN - 426,4 MHz _____________________________________________________________________________________________________ Insertion Loss ae (reference level) - max. 5,5 dB _____________________________________________________________________________________________________ Pass Band Ripple fN ± 67,5 kHz - max. 1,5 dB _____________________________________________________________________________________________________ Relative Attenuation arel fN ± 80 kHz - max. 3 dB fN ± 400 kHz ... fN ± 600 kHz - min. 15 dB fN ± 600 kHz ... fN ± 800 kHz - min. 30 dB fN ± 800 kHz ... fN ± 1600 kHz - min. 38 dB fN ± 1600 kHz ... fN ± 3000 kHz - min. 42 dB fN ± 3 MHz ... fN ± 100 MHz - min. 50 dB 2 x fN - min. 50 dB _____________________________________________________________________________________________________ Group Delay Deviation GDD fN ± 50 kHz - max. 1,2 µs fN ± 70 kHz - max. 1,5 µs fN ± 100 kHz - max. 2,0 µs _____________________________________________________________________________________________________ Operating Temperature Range - 10 °C ... + 70 °C _____________________________________________________________________________________________________ Temperature Coefficient of Frequency TCf - 0,036 ppm/K² - Frequency Inversion Temperature To 30 °C - _____________________________________________________________________________________________________ Generated: Checked / approved: |
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