TFS87E Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 87e.doc
VI TELEFILTER
Version 1.2
Filter specification
TFS 87E
08.04.2005
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
606 Ω || -15,7 pF
430 Ω || -18,9 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 87E 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
tolerance / limit
Insertion loss
(reference level)
Centre frequency
Relative frequency distance of
1^st (TFS65 at 23°C )
2^nd (TFS75 or TFS 75F at 70°C )
ae
f_C
f_C within one set of 3 filters
65,9 ±0,1 MHz
75,3 ±0,1 MHz
20,5
dB
87,1
MHz
21,2
MHz
11,8
MHz
max.
87,1
25,0 dB
± 0,10 MHz
max. ± 20 kHz
max. ± 20 kHz
Passband
PB
Pass band ripple (p-p)
-
0,5
dB
f_C … f_C + 1,1
max. 1
MHz
dB
Bandwidth
1 dB
3 dB
2,35 MHz
2,46 MHz
40 dB
2,90 MHz
Relative attenuation
arel
f_C
f_C ±
... f_C ±
1,1 MHz ... f_C ±
1,1 MHz
1,2 MHz
0,5
dB
1,5
dB
f_C ±
1,5 MHz
47
dB
in the frequency range f_C ± 1,5 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
65
dB
min. 2,2
min. 2,4
max. 3,0
MHz
MHz
MHz
max.
max.
min.
min.
min.
1 dB
3 dB
40 dB
.
50 dB
50 dB
Group delay
mean value in PB
4,8
µs
max.
5 µs
Group delay ripple (p-p) in f_C … f_C + 1,2MHz
120
ns
max. 300 ns
Operating temperature range
OTR
-
- 25 °C ... + 80 °C
Storage temperature range
-
- 40 °C ... + 85 °C
Frequency inversion temperature
39
°C
-
Temperature coefficient of frequency
TCf **)
-0,04 ppm/K²
-
*) 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)
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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