TFS77A

Filename: tfs 77a.doc Version 1.1 22.11.2004 VI TELEFILTER Measurement condition Ambient temperature: Input power level: Terminating impedance: * Input: Output: 25 0 °C dBm Filter specification TFS 77A 1/5 910 Ω || -22.8 pF 760 Ω || -24.0 pF Characteristics Remark: The reference level for the relative attenuation arel of the TFS 77A is the minimum of the pass band attenuation amin. The minimum of the pass band attenuation amin 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 nominal frequency fN is fixed at 77,55 MHz without any tolerance. The given values for the relative attenuation arel have to be achieved 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 (reference level) Nominal frequency Centre frequency Passband Amplitude ripple in PB Relative attenuation fN fN + 50 25 MHz ... fN MHz ... fN + 25 50 ae fN fC PB p-p arel MHz MHz typ. value 7,7 77,55 0,4 dB MHz fC dB tolerance / limit max. 10,0 77,55 ± 12,5 1 kHz dB dB MHz max. 70 52 615 dB dB ns ns min. min. max. max. 50 50 0,8 20 dB dB µs ns Absolute group delay in PB Group delay ripple in PB Operating temperature range Storage temperature range Temperature coeff...