The reference level for the relative attenuation arel of the TFS 224C is the minimum of the pass band attenuation. This value is defined as the insertion
loss ae. The nominal frequency fN is fixed at 224,88 MHz without any tolerance. The values of relative attenuation arel are guaranteed for the whole
operating temperature range. The frequency shift of the filter in the operating temperature range is included in the production tolerance scheme.
Data
Insertion loss
(reference level)
Nominal frequency
Passband
Pass band ripple
Relative attenuation
f
N
f
N
f
N
f
N
f
N
±
±
±
±
0,75
2,4
8
15
… f
N
MHz … f
N
MHz … f
N
MHz … f
N
MHz … f
N
±
±
±
±
±
0,3
2,4
8
15
50
arel
MHz
MHz
MHz
MHz
MHz
mean value in PB
ae
f
N
PB
typ. value
6,5
-
-
0,5
dB
f
N
dB
tolerance / limit
max.
9
224,88
±
0,3
1
dB
MHz
MHz
dB
max.
0,5
3,8
40
47
52
765
50
dB
dB
dB
dB
dB
ns
ns
max.
min.
min.
min.
min.
765
±
1
3
33
40
45
10
-
dB
dB
dB
dB
dB
ns
Group delay
Group delay ripple within PB
Deviation from linear phase
f
N
VSWR within PB
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
±
0,675 MHz
1,7
1,5 : 1
° rms
max.
max.
3,5
2:1
° rms
OTR
-
-
25
°C
ppm/K
2
- 30 °C ... + 80 °C
- 40 °C ... + 85 °C
-
-
TCf **
-0,03
*) 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/K²) x (∆T)² x fTo(MHz)
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
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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Embedded System
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