TTE滤波器LE7890

产品名称：TTE滤波器LE7890
型号：LE7890
描述：
SERIES NUMBER: LE7890
NUMBER OF POLES:7
INSERTION LOSS at 0.1 x f -3dBc dB MAXIMUM:0.5
STOPBAND
ATTENUATION dBc MINIMUM:-80
FREQUENCY:1.90 x f
-3dBc



NOTES:
? Operating Temperature Range:
0°C to +70°C
? Number of Poles: 7, 9 or 11
? VSWR: 1.5:1 Typical
? Input Power: 20 mW
? Case Type: Refer to Case Selection Guide
? Case Options: PCB, SMT, BNC or SMA
? Normalized Response: Refer to Graphs
? Product Info: Refer to LE Series
TERMINATIONS:
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 1 kHz - 10 kHz
PART NUMBER DERIVATION:
LE1182 *(T) **(R) -100M -50 -720A
1 2 3 4 5 6
1) Series, LE1182 (which has 11 poles)
2) The “T” option specifies a filter with low THD for
ADC/DAC testing. When selected the minimum
THD is > -80dBc, -96dBc typical.
3) “R” RoHS compliant. Allow for longer lead time.
4) f-3dBc
5) Terminations
6) Case selection from the case selection guide.
“T” option cases are larger than standard.

STOPBAND FREQUENCY CALCULATIONS:
Using part number LE1182-100M-50-720A, we
know that the filter is an 11 pole Elliptical Function
– Anti-Aliasing lowpass filter. Scroll down to series
number LE1182. Moving to the right we find the
stopband specification listed as -80dBc minimum at
1.20 x f -3dBc. Thus, the -80dBc frequency is at 120
MHz (1.20 x 100 MHz).