TFS221A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

TFS 221a.doc
VI TELEFILTER
Filter Specification
version 1.4
TFS 221A
27.03.2002
1/5
Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc*:
23 °C
0 dBm
input:
output:
327 Ω // -13,1 pF
361 Ω // -11,2 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 221A is the insertion loss. 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 1 dB filter attenuation level
relative to the insertion loss ae. The temperature coefficient of frequency Tc_f is valid both for the reference frequency fc and the frequency response
of the filter in the operating temperature range.
Data
Insertion loss (Reference level)
ae
typ. value
8,3 dB
tolerance / limit
max
9,0 dB
Centre frequency
fc
Relative attenuation
fc
...... fc ± 1,0
@ fc - 9,75 MHz
@ fc - 5,00 MHz
fc + 89 MHz ...... fc + 100
fc +249 MHz ...... fc + 255
arel
MHz
MHz
MHz
-
-
55 dB
55 dB
-
-
221,000 MHz ± 1,0 MHz
max
1
dB
min
50
dB
min
50
dB
min
50
dB
min
50
dB
Temperature coefficient of frequency ( Tc_f )
Frequency deviation of fc over temperature T:
-18
ppm/K
∆fc(Hz) = Tc_f(ppm/K) x (T - T_A) x f_CAT (MHz)
Operating temperature range
Storage temperature range
- 30 °C ... + 80 °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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267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
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