TFS250

www.DataSheet4U.com Filename: tfs250.doc version 3.0 22.02.2002 VI TELEFILTER Filter specification TFS 250 1/5 Measurement Condition Ambient Temperature: Input Power Level: Source impedance: Load impedance: Terminating impedances: * input: output: 23 °C 0 dBm 50 Ω 50 Ω 1,05 kΩ || -7.9 pF 1,02 kΩ || -8.2 pF Characteristics Remark: Reference level for the relative attenuation arel is the minimum pass band attenuation amin. It is defined as the insertion loss ae. The nominal frequency fN is fixed to 250,0 MHz. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 1,0 dB filter attenuation level relative to the insertion loss ae. The given values for the insertion loss, the relative attenuation arel and the group delay ripple have to be reached at the frequencies given below also 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. Data Insertion loss (Reference level) Nominal frequency Passband Amplitude ripple in PB Relative attenuation fN ± 3,0 fN ± 3,5 fN ± 4,0 fN - 249,0 fN + 6,0 fN + 12,5 fN + 14,3 fN + 24,6 fN + 29 MHz ... fN ± MHz ... fN ± MHz ... fN ± MHz ... fN MHz ... fN + MHz ... fN + MHz ... fN + MHz ... fN + MHz ... 3,5 4,0 6,0 6,0 12,5 14,3 24,6 29,0 2,5 arel MHz MHz MHz MHz MHz MHz MHz MHz GHz ϕ ae = amin fN typ. Value 13,0 0,4 dB dB Limit max. ± 1 dB 250,0 MHz fN ± 2 max. MHz 1...