TFS125H Datasheet | Vectron International

tfs125H.doc version 1.2 VI TELEFILTER Measurement Condition Ambient temperature: Input power level: Source impedance: Load impedance: Terminating impedances: - ) 23 0 50 50 input: output: Filter specification C d Bm single ended single ended 1,03 k // -15,4 p F 0,88 k // -14,8 p F TFS 125 H 1/5 Characteristics Remark: Reference level for the relative attenuation arel of the TFS 125H is the minimum of the pass band attenuation. Reference for the echo response attenuation is the main time response lobe, the reference time is defined as t0. The nominal frequency f N is fixed at 125 MHz without tolerance. 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 TC f in the operating temperature range and due to a production tolerance for the centre frequency fc. Data Absolute attenuation within PB Nominal frequency Pass band (PB) 1 d B bandwidth Relative attenuation f N ... f N 0,1 MHz ... f N f N f N 0,4 MHz ... f N 1,2 f N 1,8 f N f N 6 f N - 13 f N + 13 MHz ... MHz ... MHz ... MHz ... MHz ... arel 0,1 MHz 0,4 MHz 0,6 MHz MHz MHz MHz MHz MHz f N typ. Value 8 1,6 MHz f N min. d B Limit 7... 10 125 d B MHz 0,6 MHz 1,2 MHz 7 22 45 65 70 d B d B d B d B d B max. max. max. min. min. min. min. min. 0,4 d B 0,7 d B 1,85 d B 6 15 40 50 50 d B d B d B d B d B f N 1,8 f N 6 f N 13 f N - 115 f N + 325 Echo response attenuation arel t0 + 2 µs t0 + 3 µs t0 + 4 µs t0 + 5 µs t0 + 6 µs Group delay at f N Group delay ripple within PB Input power level VSWR within PB 37 46 56 65 78 700 50 14 70 -0,04 20 d B d B d B d B d B ns ns min. min. min. min. min. 30 40 50 55 60 d B d B d B d B d B ns ns d Bm max. 800 max. 150 max. + 10 d B d Bm min. min. 2:1 60 d Bm Intermodulation products - - Operating temperature range Storage temperature range Temperature coefficient of frequency Frequency inversion temperature TCf - - - T0 ppm/K...