TFS261B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 261b.doc
Vectron International
Version 1.1
Filter specification
TFS 261B
19.05.2009
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
720 Ω || -5,7 pF
580 Ω || -6,7 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 261B is the minimum of the pass band attenuation amin. 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 1,5 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 261,0 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved 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
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Pass band
Pass band ripple
Pass band variation
Relative attenuation
f_N
f_N -
f_N +
260,0
0,8
… f_N ±
MHz … f_N -
MHz … f_N +
Group delay
Group delay ripple within PB
ae
f_N
f_C
PB
150,0
0,8
239,0
arel
kHz
MHz
MHz
at f_N @ 25 °C
Pulse response**** (drive pulse Trapezoidal pulse 3.5µs width,
10-90% rise & fall time = 2.0+/-0.25µs)
Subsequent sidelobes, (after the main lobe)
Third echo, (third sidelobe after the main lobe)
Return loss within f_N ± 100kHz
Input power level
**
Operable temperature range
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
OTR
TCf ***
typ. value
6,8 dB
-
261,0
-
-
0,75
MHz
dB
0,75 dB
43
dB
43
dB
1,58 µs
105
ns
38
58
-
-
-
-
-
22
-0,04
dB
dB
°C
ppm/K²
tolerance / limit
max.
11,0 dB
f_N ±
max.
max.
261,0 MHz
-
150,0 kHz
1,0 dB
1,5 dB
max.
min.
min.
max.
max.
min.
1,5 dB
40 dB
40 dB
±100 ns
200 ns
35 dB
min.
16 dB
min.
35 dB
min.
15 dB
max.
20 dBm
- 40 °C ... + 105 °C
- 40 °C ... + 85 °C
- 62 °C ... + 105 °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.
**) for short term operation only, cycle time 1:1000; 15 dBm max for continuous operation
***) ∆f(Hz) = TCf(ppm/K²) x (T-T₀)² x fcat(MHz).
****) The pulse response performance has been simulated using measured device s-parameters and the final performance is an inherent feature of the
design.
Generated:
Checked / Approved:
Vectron International GmbH & Co. KG
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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