TFS75F Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 75f.doc
VI TELEFILTER
Version 1.1
Filter specification
TFS 75F
26.04.2005
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
50 Ω || 0 pF
50 Ω || 0 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 75F 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 20 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
Insertion loss
(reference level)
ae
22,8
Centre frequency at temperature 70°C
f_COT
75,3
Centre frequency at ambient temperature
f_C
75,6
Relative frequency distance of f_C within one set of 3 filters at 70 °C
1^st (TFS65 at 23°C )
65,9 ±0,1 MHz
9,4
2^nd (TFS87E at 23°C )
87,1 ±0,1 MHz
11,8
dB
MHz
MHz
MHz
MHz
max.
75,3
26,0 dB
± 0,10 MHz
max. ± 20 kHz
max. ± 20 kHz
Passband
PB
Pass band ripple (p-p)
-
0,7
dB
f_C … f_C ± 2,8
max. 1
MHz
dB
Bandwidth
1 dB
3 dB
40 dB
5,98 MHz
6,11 MHz
6,55 MHz
Relative attenuation
arel
f_C
f_C ±
... f_C ±
2,8 MHz ... f_C ±
2,8 MHz
3,0 MHz
0,7
dB
1,5
dB
f_C ±
3,3 MHz
48
dB
in the frequency range f_C ± 3,3 MHz … f_C ± 20 MHz the limit line is of type SLOPING LINE
f_C ± 20
MHz
55
dB
in the frequency range f_C ± 20 MHz … f_C ± 25 MHz the limit line is of type SLOPING LINE
f_C ± 25
MHz
60
dB
f_C ± 25
MHz ... f_C ± 50
MHz
60
dB
min. 5,6
min. 6,0
max. 6,6
MHz
MHz
MHz
max.
max.
min.
min.
min.
min.
1 dB
3 dB
40 dB
45 dB
50 dB
50 dB
Group delay
mean value in PB
4,75 µs
max.
5 µs
Group delay ripple (p-p) in f_C … f_C + 3 MHz
160
ns
max. 300 ns
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
OTR
TCf **)
-
-
-84
ppm/K
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
-
*) The terminating impedances depend on parasites 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/K) x (T-T₀) x fTo(MHz)
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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