TFS240L Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 240l.doc
VI TELEFILTER
Version 1.1
Filter specification
TFS 240L
15.07.2004
1/5
Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc*:
25 °C
0 dBm
input: 360 Ω // -9,6 pF
output: 360 Ω // -10,0 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS240L is the insertion loss. The minimum of the pass 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 at the 25 dB filter attenuation level relative to the
insertion loss ae. The temperature coefficient of frequency Tc_f is valid both for the reference frequency fc and the frequency response of the filter in the
operating temperature range.
Data
Insertion loss
ae
Centre frequency
fc
(reference frequency at ambient temperature)
Passband Ripple (p-p) f_c ± 100 kHz
Relative attenuation
fc
......... fc
fc ± 0,1 MHz ......... fc
fc ± 0,375 MHz ......... fc
fc ± 0,575 MHz ......... fc
fc ± 0,975 MHz ......... fc
10
MHz ......... fc
fc + 5
MHz ......... fc
arel
± 0,1 MHz
± 0,15 MHz
± 0,575 MHz
± 0,975 MHz
±5
MHz
-5
MHz
+ 360
MHz
Triple transit response suppression
typ. value
5,2 dB
-
0,2 dB
0,2 dB
0,5 dB
35 dB
40 dB
40 dB
48 dB
48 dB
18 dB
tolerance / limit
max.
9 dB
240 MHz ± 25 kHz
max.
0,5 dB
max.
max.
min.
min.
min.
min.
min.
0,5 dB
1 dB
25 dB
30 dB
35 dB
38 dB
38 dB
min. 15 dB
Group delay ripple
Average group delay
Return loss
Input Power Level
in f_c ± 100 kHz
in f_c ± 100 kHz
in f_c ± 150 kHz
250 ns
1,8 µs
12 dB
-
max. 400 ns
max.
2,4 µs
min.
7 dB
max. 20 dBm***)
Operating temperature range
-
- 30 °C.... + 80 °C
Storage temperature range
Temperature coefficient of frequency
Frequency inversion temperature
TC_f **
T₀
-
-0,04 ppm/K²
28 °C
- 40 °C.... + 85 °C
-
-
*) 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.
**) ∆f(Hz) = TCf(ppm/K²) x (T-T₀)² x fTo(MHz)
***) This power level is allowed for short term operation (10% of life time) only, the max. input power for continuous operation is 15 dBm
generated:
checked / approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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