TFS280F Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs280f.doc
VI TELEFILTER
version 1.0
Filter specification
TFS 280 F
26.06.2002
1/5
Measurement condition
Ambient temperature:
Input power level:
terminating impedances *
Input:
Output:
22
02
540
230
C
dBm
-4,9 pF
-6,3 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS280F is the minimum of the pass band attenuation amin. This value 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 given values for the relative attenuation arel and 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.
Data
typ. value
limit
Insertion loss
Nominal frequency
Centre frequency
3 dB- BW
ae = amin
fN
fc
7,5
280
280,0
25,5
dB
MHz
MHz
MHz
max. 10 dB
280,0 MHz
-
min 17 MHz
Relative attenuation
arel
fN -
8,5 MHz ... fN + 8,5 MHz
10
fN + 30
fN + 60
MHz ... fN - 30
MHz ... fN + 60
MHz ... fN + 220
MHz
MHz
MHz
0,3 dB
45 -50 dB
42 -50 dB
65
dB
max. 1 dB
min. 40 dB
min. 38 dB
min. 40 dB
Group delay ripple GD
fN – 8,5 MHz ... fN + 8,5 MHz
Input power level
35
ns
max. 100
max. + 10
ns
dBm
Operating temperature range
22
C
- 30 C ... + 75 C
Storage temperature range
- 40 C ... + 85 C
Temperature coefficient of frequency
TCf
-87
ppm/K
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as
reference values only. Should there be additional questions, do not hesitate to ask for an application note or contact our design team.
Generated:
Checked / approved:
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