TFS400H

tfs400h.doc version 1.1 11.01.2002 VI TELEFILTER Measurement condition Ambient temperature: 23 C Input power level: 0 dBm Terminating impedances *) for input : 385 for output : 385 External coil : 67 nH Filter Specification TFS 400 H 1/5 -1,05 pF -1,05 pF Characteristics Remark: rel min www.DataSheet4U.com 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 Reference level for the relative attenuation a of the TFS400H is the minimum of the pass band attenuation a . The minimum of the pass at the 3 dB filter attenuation level relative to the insertion loss a e. The nominal frequency fN is fixed on 400 MHz without tolerance. The given values for the relative attenuation a rel and for 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 Centre frequency Usable signal bandwidth 3 dB bandwidth Relative attenuation fN ... fN ± fN ± 400 kHz ... fN ± 600 kHz ... fN ± 1 MHz ... Group delay ripple fN ± 70 kHz BW arel 70 kHz ae = amin fN fc typ. value 3,6 400,02 362 0,7 25 42 54 0,4 TC - 0.036 ppm/K² kHz dB dB dB dB µs MHz dB tolerance/limit max. 6,5 dB 400,000 MHz min. 140 - kHz max. min. min. min. max. 3 15 27...