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PDF TFS249A Data sheet ( Hoja de datos )
| Número de pieza | TFS249A | |
| Descripción | TELEFILTER Filter Specification | |
| Fabricantes | ETC | |
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Tfs249A.doc
VI TELEFILTER
Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedance at fc:
input:
output:
version 2.0
Filter Specification
23 °C
0 dBm
1,15 kΩ || -6,5 pF
1,05 kΩ || -6,5 pF
08.06.2001
TFS 249A
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 249A is the minimum of the pass band attenuation amin . It 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 nominal frequency fN is fixed on 249,6 MHz without tolerance. The given values for the relative attenuation arel and for the
group delay ripple have to be reached at the frequencies given below also 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)
Nominal frequency
fN
ae
14,0 dB
-
max. 20,0
249,6
dB
MHz
Centre frequency
1 dB Bandwidth
3 dB Bandwidth
30 dB Bandwidth
40 dB Bandwidth
fc
249,6
4,72
5,71
9,08
9,60
MHz
MHz
MHz
MHz
MHz
min.
max.
3,84
-
-
11,0
MHz
MHz
Passband ripple
within ± 1,92 MHz
Relative attenuation
arel
fN ...
fN ± 1,92 MHz
fN ± 3,08 MHz fN ± 5,5 MHz
fN ± 5,5 MHz fN ± 15 MHz
fN ± 15 MHz fN ± 30 MHz
Group delay ripple within ± 1,92 MHz
Return loss:
within ± 1,92 MHz
Operating temperature range
Temperature coefficient of frequency ( Tcf ) *)
Frequency inversion temperature To
Storage temperature range
*) ∆fc(Hz) = Tcf(ppm/K²) x (To - TA) ² x fTo (MHz)
0,4
10
48
60
35
16
-
dB
dB
dB
dB
ns
dB
0,032 ppm/ K²
32 °C
min. 1,0 dB
max.
min.
min.
min.
1,0
3,0
40,0
50,0
max. 50,0
dB
dB
dB
dB
ns
min. 10,0 dB
- 10 °C ... + 80 °C
- 30 °C ... + 85 °C
Generated:
Checked/Approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30
E-Mail: [email protected]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: [email protected]
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
1 page  
Tfs249A.doc
VI TELEFILTER
version 2.0
Filter Specification
History
Version
Reason of Changes
Development specification
1.0 - generated according to Hudson’s specification
1.1 - Changed: group delay ripple:100ns 50ns
- Changed: terminating impedance
1.2 - change the 40 dB bandwidth to max 11 MHz
Filter specification
2.0 final filter specification
- typical values and terminating impedances added
08.06.2001
TFS 249A
5/5
Name
Dr. Sabah
Dr. Sabah
Steiner
Steiner
Date
30.08.2000
07.09.2000
28.05.2001
08.06.2001
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30
E-Mail: [email protected]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: [email protected]
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet TFS249A.PDF ] | |
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