TFS370 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs370.doc
VI TELEFILTER
version 1.3
Filter Specification
29.10.2002
TFS 370
1/5
Measurement condition
Ambient temperature:
23 C
Input power level:
0 dBm
Terminating impedances *): for input:
for output :
170 // -0,50 pF
170 // -0,50 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 370 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 370 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
tolerance/limit
Insertion loss
(Reference level)
ae = amin
2,80 dB
3 dB
Nominal frequency
fN
Centre frequency
fc
Pass band ripple
within fN 10 MHz
(at ambient temperature)
-
370
MHz
1,5** dB
370 MHz
-
max.
2 dB**
Relative attenuation
arel
fN
…fN ± 10 MHz
fN - 80 MHz …fN - 100 MHz
fN - 35 MHz …fN - 55 MHz
fN + 25 MHz …fN + 57,5 MHz
fN + 57,5MHz …fN + 82,5 MHz
fN + 127,5MHz …fN + 152,5 MHz
1,30 dB
60
dB
60
dB
25
dB
60
dB
60
db
max.
min.
min.
min.
min.
min.
3 dB
50 dB
30 dB
20 dB
40 dB
57 dB
Intermodulation
IP3
Input power lewel
Permissible DC voltage VDC
-
min. 20 dBm***
-
max. 10 dBm
-
max. 12 V
Operating temperature range
- 25 C ... + 75 C
Storage temperature range
- 40 C … + 85 C
Temperature coefficient of frequency TCf****
-72
ppm/K
-
*) 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.
**) 2 dB bandwidth (f_N 10 MHz) is guaranteed at ambient temperature (23°C).
***) intermodulation signals: fN + 1 MHz and fN + 2 MHz, each of 10 dBm
****) fc(Hz) = Tcf(ppm/K) x (T - TA) x fCTA (MHz)
generated:
checked / approved:
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