TFS380H

This is the description about TFS380H of the VI RELEFILTER development specification. Reference level for the relative attenuation arel of the TFS 380H is the attenuation at 380 MHz. The nominal frequency fN is fixed at 380 MHz without tolerance. 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 given values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below even if the centre frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre frequency fc.

Here are the features of TFS380H : Ambient temperature is 23°C. Input power level is 0dBm. Terminating impedances for input is t.b.d; for output is t.b.d.

The absolute maximum ratings of TFS380H  are these (TA = 25°C). Insertion loss (Reference level) is max. 11 dB. Centre frequency is ±0,4 MHz. Pass band at ambient temperature is fN ± 2 MHz. Amplitude variation within PB is max. 1,5 dB. Group delay ripple is max. 75 ns. Operating temperature range is from - 40°C to +85°C. Storage temperature range is from - 40 °C to + 85 °C. Frequency deviation of fc over temperature is fc(Hz) = Tcf(ppm/K) x (T - TA) x fCAT (MHz). Frequency inversion temperature is t.b.d.

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