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TFS225E fiches techniques PDF

ETC - VI TELEFILTER

Numéro de référence TFS225E
Description VI TELEFILTER
Fabricant ETC 
Logo ETC 





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TFS225E fiche technique
Filename: tfs225e.doc
VI TELEFILTER
version 1.2
Filter specification
TFS 225E
25.04.2003
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances at fc *:
23 °C
0 dBm
input: 940 // -5,7 pF
output: 940 // -5,7 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 225E 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 1 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
limit
Insertion loss
ae = amin
6,5 dB
min. 4,5 dB
max. 8 dB
Nominal frequency
Centre frequency
fN
fc
-
225 MHz
225 MHz
-
Relative attenuation
fN - 0,2 MHz ... fN +
fN ± 0,6 kHz ... fN ±
fN ± 1,2 MHz ... fN ±
1 MHz ... fN -
fN + 1,8 MHz ... fN +
fN + 7 MHz ...
arel
0,2
1,2
1,8
1,8
7
1
MHz
MHz
MHz
MHz
MHz
GHz
0,5
15
27
35
35
52
dB
dB
dB
dB
dB
dB
max.
min.
min.
min.
min.
min.
1
8
20
30
30
45
dB
dB
dB
dB
dB
dB
Group delay ripple in fN - 200 kHz ... fN + 200 kHz
Operating temperature range
Storage temperature range
Temperature coefficient
TC **
Frequency inversion temperature T0
85 ns
-
-
- 0,04 ppm/K²
35 °C
max. 350 ns
- 20 °C...+ 80 °C
- 35 °C.. + 85 °C
-
-
Input power level
- max. + 10 dBm
*) 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/K) x (T-T0)² x fTo(MHz)
generated:
checked / approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
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.

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