The reference level for the relative attenuation arel of the TFS 125L is the minimum of the pass band attenuation. This value is defined as the insertion loss
ae. The nominal frequency fN is fixed at 125 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
f
N
f
N
f
N
f
N
±
±
±
±
±
±
-
+
0,6
1,2
1,8
3,4
6,5
9,5
115
17
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
… f
N
…
…
…
…
…
…
…
…
f
N
f
N
f
N
f
N
f
N
f
N
f
N
f
N
±
±
±
±
±
±
±
-
+
200
1,2
1,8
3,4
6,5
9,5
17
17
325
arel
kHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
at f
N
ae
f
N
typ. value
5,7
-
f
N
-
dB
tolerance / limit
min.
7
125
± 200
1
dB
MHz
kHz
dB
max.
0,6
11
30
35
45
55
60
75
75
1,1
dB
dB
dB
dB
dB
dB
dB
dB
dB
µs
max.
min.
min.
min.
min.
min.
min.
min.
min.
max.
min.
1
8
20
25
34
40
43
55
55
1,7
0,7
120
2,3
10
dB
dB
dB
dB
dB
dB
dB
dB
dB
µs
µs
ns
Group delay
Group delay ripple within PB
VSWR
Input power level
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
TCf **
OTR
60
1,5
-
-
-
37
-0,04
ns
max.
max.
max.
dBm
- 10 °C ... + 85 °C
- 40 °C ... + 85°C
°C
ppm/K
2
-
-
*) 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
c(Hz) = Tc
f
(ppm/K²) x (To - T
A
) ² x f
CAT
(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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