TFS75

Features:






Specifications






Description

      This is the description about TFS75 of the VI TELEFILTER Filter specification. Reference level for the relative attenuation arel of the TFS 75 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 reference frequence 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.
      Here are the TFS75 features: Ambient temperature is 25°C. Input power level is 0dBm. Terminating impedances for input is 190// 40pF; for output is 2,1 // 24pF.
      The TFS75 absolute Maximum Ratings are these (TA = 25°C). Insertion loss (Reference level) is 26dB. Reference frequency at operation temperature TO=70°C (fCOT) *) is 75.30± 0,20 MHz. Relative frequency distance of fCAT within one set of 3 filters1nd filter with fCAT = 65,9 MHz ± 200 kHz *)  is 9400 kHz max ± 20 kHz and 3rd filter with fCAT= 87,1 MHz ±200 kHz is 11800 kHz max  ±20 kHz. Pass band rumor is fc ... fc ± 155 kHz. Operating temperature range is + 70 ° ± 1° C. Operating temperature range is from -40 ° to +85° C. Temperature coefficient of frequency is - -76,466 ppm/K2. Group delay at operation temperature 25°C is 4.96s. Group delay at operation temperature 70°C is 4.98 s. Group delay ripple (p-p) is fc to fc ± 3,0 MHz ± 175 ns ± max 200 ns. Frequency deviation of fc over temperature is fc(Hz) = Tcf(ppm/K) x (T - TA) x fCAT (MHz).
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