TFS224A

      The TFS224A is designed as VI telefilter.The reference level for the relative attenuation arel of the TFS 224A is the minimum of the pass band attenuation. This value is defined as the insertion loss ae. The nominal frequency fN is fixed at 224,88 MHz without any tolerance. The values of relative attenuation arel are guaranteed for the whole operating temperature range. The frequency shift of the filter in the operating temperature range is included in the production tolerance scheme.
      Some important specifications of TFS224A have been concluded into several points as follow.The first one is about its insertion loss which would be typ 6.5dB and max 9.0dB.The next one is about its nominal frequency which would be max 224,88 MHz.The next one is about its pass band which would be max fN ± 0,3 MHz.The next one is about its pass band ripple which would be typ 0,5 dB and would be max. 1 dB.The next one is about its relative attenuation which would be max 1dB for fN to fN ± 0,3 MHz and would be min 3dB for fN ± 0,75 MHz to fN ± 2,4 MHz and would be typ 40dB and min 33dB for fN ± 2,4 MHz to fN ± 8 MHz and would be typ 47dB and min 40dB for fN ± 8 MHz to fN ± 15 MHz and would be typ 52dB and min 45dB for fN ± 15 MHz to fN ± 50 MHz.The next one is about its group delay mean value in PB which would be typ 765 ns and limited of 765 ± 10 ns.The next one is about its group delay ripple within PB which would be typ 50 ns.The next one is about its deviation from linear phase which would be 1,7 ° rms and max. 3,5 ° rms.The next one is about its VSWR within PB which would be typ 1,5 : 1 and would be max. 2 : 1.The next one is about its operating temperature range which would be from - 30 °C to + 80 °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 frequency inversion temperature which would be typ 25 °C.The next one is about its temperature coefficient of frequency which would be typ -0,03 ppm/K2.Something should be noted that the terminating impedances depend on parasites and q-values of matching elements and the board used, and are to be understood as reference values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.And so on.For more information please contact us.