TFS225E

Filename: tfs225e.doc version 1.2 25.04.2003 VI TELEFILTER Filter specification TFS 225E 1/5 Measurement condition Ambient temperature: Input power level: Terminating impedances at fc *: 23 0 input: output: °C dBm 940 Ω // -5,7 pF 940 Ω // -5,7 pF Characteristics Remark: The reference level for the relative attenuation arel of TFS 225E 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 1 dB filter attenuation level relative to the insertion loss ae. The given values for the relative attenuation arel and 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. Data Insertion loss ae = amin typ. value 6,5 dB limit min. max. 4,5 dB 8 dB 225 MHz Nominal frequency Centre frequency Relative attenuation fN fN ± fN ± fN + fN + 0,2 MHz ... fN + 0,6 1,2 1 1,8 7 kHz MHz MHz MHz MHz ... fN ± ... fN ± ... fN ... fN + ... fN fc arel 225 MHz - 0,2 MHz 1,2 1,8 1,8 7 1 MHz MHz MHz MHz GHz 0,5 15 27 35 35 52 85 - dB dB dB dB dB dB ns max. min. min. min. min. min. 1 8 20 30 30 45 dB dB dB dB dB dB ns Group delay ripple in fN - 200 kHz ... fN + 200 kHz Operating temperature range Storage temperature range Temperature coefficient...