TFS125D

tfs125d.doc version 2.0 21.02.2002 VI TELEFILTER Measurement Condition Ambient Temperature: Input Power Level: Source impedance: Load impedance: Terminating impedances: *) input: output: Filter specification TFS 125 D 1/5 23 °C 0 dBm 50 Ω single ended 50 Ω single ended 175 Ω || -22.5 pF 200 Ω || -22.7 pF Characteristics Remark: The reference level for the relative attenuation arel of TFS 125D is the minimum of the pass band attenuation amin. This value is defined as the insertion loss ae. 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 nominal frequency fN is fixed on 125,0 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 fo 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 fo. Data Insertion Loss (Reference level) Nominal Frequency 3 dB - Bandwidth Pass Band Ripple Relative Attenuation 1,8 MHz ... fN ± 6 MHz ... fN ± MHz ... fN - 124 39 MHz ... fN + Group delay fN Group delay ripple fN – 80 kHz ... fN + 80 kHz Input power level Operating Temperature Range Storage Temperature Range arel fN ± 6 MHz fN ± 39 MHz fN 39 MHz fN + 775 MHz ae = amin typ. Value max. Limit 8 dB fN BW - 125,0 MHz min. 400 kHz - max. 1,...