产品名称：TTE 滤波器 LT8  
型号：LT8   
描述：
SERIES NUMBER：LT8
NUMBER OF POLES：8   
INSERTION LOSS at 5.0 x f -3dBc dB MAXIMUM：0.5 
STOPBAND
        ATTENUATION dBc MINIMUM ：-60 
        FREQUENCY：4.5 x f -3dBc
NOTES:
? Operating Temperature Range: 
 0°C to +70°C 
? Number of Poles: 3 to 10
? VSWR: 1.5:1 Typical
? Input Power: 20 mW
? Case Type: Refer to Case Selection Guide
? Case Option: PCB
? Normalized : Refer to Graphs
? Product Info: Refer to LT Series 
TERMINATION: 
50 Ω 100 MHz - 200 MHz
50 Ω or 75 Ω 300 kHz - 100 MHz
1 kΩ - 50 Ω 10 kHz - 300 kHz
10 kΩ - 1 kΩ 100 Hz - 10 kHz
STOPBAND FREQUENCY CALCULATION:
Using part number LT9-144K-50-1335, we know 
that the filter is a 9 pole Bessel lowpass filter. 
Scroll down to series number LT9. Moving to the 
right we find the stopband specification listed as 
-60dBc minimum at 4.3 x f -3dBc. Thus, the -60dBc 
frequency is at 619.2 kHz (4.3 x 144 kHz).