TFS380C

tfs380c.doc version 1.0 19.04.2001 VI TELEFILTER Filter specification TFS 380C 1/5 Measurement Condition Ambient Temperature: Input Power Level: Source impedance: Load impedance: Terminating impedances: input: output: 23 0 50 50 °C dBm Ω Ω 720 Ω || -4.7pF 1000 Ω || -4.1pF 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 380,0 MHz. The center 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 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 1 dB - Bandwidth Relative Attenuation fN ± 2,5 fN ± 3,0 fN ± 3,25 fN ± 3,5 fN ± 5,0 fN ± 20,0 fN ± 40,0 fN ± 60,0 MHz ... fN ± 3,0 MHz ... fN ± 3,25 MHz ... fN ± 3,5 MHz ... fN ± 5,0 MHz ... fN ± 20,0 MHz ... fN ± 40,0 MHz ... fN ± 60,0 MHz ... fN ± 100,0 ae = amin typ. Value 14,0 dB max. Limit 17 dB fN BW 4,25 MHz min. 380,0 MHz 4,0 MHz arel MHz MHz MHz MHz MHz MHz MHz MHz 5 20 35 38 48 53 60 65 dB dB dB dB dB dB dB dB min. min. min. min. min. m...