TFS403A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs403A.doc
VI TELEFILTER
Filter Specification
version 1.3
TFS 403A
27.11.2002
1/5
Measurement condition
Ambient temperature:
23 C
Input power level:
10 dBm
Terminating impedances at fc *: for input:
140 -10,2 pF
for output: 137 - 8,8 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 403A 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 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 403,5 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 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
(Reference level)
Nominal frequency
fN
4,8 dB
-
max. 5,5 dB
403,5 MHz
Pass band
PB
-
fN
1,5 MHz
Amplitude ripple in PB p-p
0,8 dB
max. 1,5 dB
Relative attenuation
arel
fN
....... fN ±
1,5
fN ± 4,5 MHz ...... fN ±
fN ± 19,5 MHz ....... fN ±
2 fN ± 3 MHz
19,5
100
MHz
MHz
MHz
Return loss within PB
-
28 dB
40 dB
45 dB
12 dB
max. 3 dB
min. 25 dB
min. 35 dB
min. 20 dB
min. 8 dB
Input power level
-
max. 10 dBm
Temperature coefficient of frequency Tcf
Operating temperature range
Storage temperature range
-20 ppm/K
-
-
-
- 10 °C.. + 60 °C
- 40 °C.. + 85 °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.
generated:
checked / approved:
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