TFS156A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs156A.doc
VI TELEFILTER
version 1.2
Filter Specification
Measurement condition
Ambient temperature:
23 °C
Input power level:
0 dBm
Terminating impedances *):
Input : 615 Ω║ -1,25 pF
Output : 615 Ω║ -1,25 pF
TFS 156A
30.01.2002
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS156A 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
3dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 156,525 MHz without any tolerance. The given
values for the relative attenuation arel 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
ae
(Reference level)
2,6 dB
max. 5
dB
Nominal frequency
fN
Centre frequency
fc
-
156,538 MHz
156,525 MHz
-
Relative attenuation
f_N ^±
25 kHz
f_N ^{± 125 kHz...} f_N ^±
@ _fN ± 450 kHz
arel
450 kHz
Temperature coefficient of frequency TCf **)
Frequency inversion temperature To
Operating Temperature Range
1,1 dB
31
dB
65
dB
- 0,036 ppm/K²
+ 22
°C
max. 3
dB
min. 20
dB
min. 60
dB
-
-
-40 °C ... + 85
°C
Storage Temperature Range
-54 °C ..+ 100
°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.
**) ∆f(Hz) = TCf(ppm/K²) x (∆T)² x fTo(MHz)
generated:
checked / approved:
VI TELEFILTER
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D 14 513 TELTOW / Germany
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Vectron International , Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [e-mail]
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