TFH44C

      The TFH44C is designed as VI telefilter with measurement condition of ambient temperature: 25 °C and input power level: 10 dBm and terminating impedances for input: 50 || 0 pF and for output: 50 || 0 pF.
      Reference level for the relative attenuation arel of the TFH 44C is the insertion loss. The insertion loss ae is defined as the insertion loss at the nominal frequency fN . The centre frequency 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 for both the reference frequency fc and the frequency response of the filter on the operating temperature.
      Some important specifications have been concluded into several points as follow. The first one is about its insertion loss which would be typ 22,6 dB and max. 24,0 dB (reference level). The next one is about its nominal frequency which would be max 44,0 MHz. The next one is about its centre frequency which would be typ 44,0 MHz. The next one is about its passband which would be max fN ± 2,8 MHz. The next one is about its passband variation which would be typ 0,45 dB and 0,60 dB. The next one is about its 3 dB bandwidth which would be typ 8,11 MHz and min. 8,00 MHz. The next one is about its group delay variation in PB which would be typ 55 ns and max. 70 ns. The next one is about its temperature coefficient of frequency which would be typ -75 ppm/K. The next one is about its operating temperature which would be 25 °C. The next one is about its storage temperature range which would be from -25 to + 85 °C. And so on. For more information please contact us.