TFS190C

      The TFS190C is designed as VI telefilter.Reference level for the relative attenuation arel of the TFS 190 C 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 frequency fN is fixed at 190,0 MHz without tolerance. The values of the pass band ripple and the relative attenuation arel are guaranteed in the whole operating temperature range. The frequency shift of the filter in the operating temperature range is included in the measurement tolerance scheme.
      Some important specifications of TFS190C have been concluded into several points as follow.The first one is about its insertion loss which would be typ 8.2dB and max 12dB.The next one is about its nominal frequency which would be max 190MHz.The next one is about its pass band which would be max fN ± 2.0 MHz.The next one is about its relative attenuation which would be typ 1dB and max 2dB for fN to fN ± 2MHz and would be max 5dB for fN ± 2MHz to fN ± 2.5MHz and would be typ 36dB and min 32dB for fN - 5.0MHz to fN - 12MHz and would be typ 40dB and min 36dB for fN- 12.0MHz to fN - 190MHz and would be typ 36dB and min 32dB for fN + 5.0MHz to fN + 12MHz and would be typ 45dB and min 36dB for fN + 12.0MHz to fN+ 270MHz.The next one is about its phase variation which ould be typ 1,2 °rms and max 4 °rms.The next one is about its input power level which would be max 10 dBm.The next one is about its operating temperature range which would be from -30 °C to + 85 °C.The next one is about its storage temperature range which would be from -55 °C to + 125 °C.The next one is about its temperature coefficient of frequency which would be typ -25 ppm/K.Something should be noted that the terminating impedances depend on parasitics 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.