TFS420A1

      The TFS420A1 is designed as VI telefilter.
      Reference level for the relative attenuation arel of the TFS420A1 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 nominal frequence fN is fixed at 420,0 MHz without tolerance or limit. The reference frequence 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 both for the reference frequency fc and the frequency response of the filter in the operating temperature range.
      Some TFS420A1 important specifications have been concluded into several points as follow. The first one is about its insertion loss which would be typ 21.5dB and max 24dB. The next one is about its nominal frequency which would be max 420.0 MHz. The next one is about its centre frequency at ambient temperature which would be typ 420.03 MHz. The next one is about its pass band (-1dB) which would be from fN - 4.1 MHz to fN + 4.1 MHz. The next one is about its amplitude ripple (p-p) from fN to fN ± 4.1 MHz which would be typ 0.4 dB and max 1.0 dB. The next one is about its average group delay in pass band which would be typ 0.630 s. The next one is about its group delay ripple in pass band (p-p) which would be typ 40 ns and max 60 ns. The next one is about its triple transit attenuation compared to main signal which would be from 45 to 49 dB. The next one is about its crosstalk which would be from 50 to 54 dB. The next one is about its frequency inversion temperature which would be 30 °C. The next one is about its temperature coefficient of frequency which would be typ -0.050 ppm/K2. The next one is about its frequency deviation of fc over temperature T which would mean fc(Hz) = Tcf(ppm/K) x (T - To)2 x fTo(MHz). The next one is about its operating temperature range which would be from -20 °C to + 75 °C. The next one is about its storage temperature range which would be from -40 °C to + 85 °C. The next one is about its input power level which would be max + 10 dBm. And so on. For more information please contact us.