TFS70AA中文资料VECTRON数据手册PDF规格书

Characteristics

Remark:

Reference level for the relative attenuation a rel of the TFS 70AA is the minimum of the pass band attenuation amin. The minimum of the pass band attenuation a min is defined as the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 70 MHz without tolerance. The given values for the relative attenuation arel and for 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.

Measurement condition :

Ambient temperature TA: 23 °C

Input power level: 0 dBm

Terminating impedances at fc *) : for input: 238Ω | 4,97 pF.

for output: 284Ω | 3,75 pF.