TFS135 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – Filter Specification

TFS 135.doc
VI TELEFILTER
Filter Specification
version 1.5
TFS 135
05.07..2002
1/5
1. Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc*:
23 °C
0 dBm
input:
output:
1,5 kΩ// -6,0 pF
1,5 kΩ// -5,0 pF
2. Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 135 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 3 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
14,5 dB
tolerance / limit
max 16,0 dB
Centre frequency
fc
(at ambient temperature T_A
)
Relative attenuation
fc
......
fc ± 4 MHz ......
fc ± 6 MHz ......
fc ± 15 MHz ......
arel
fc ± 1,25 MHz
fc ± 6 MHz
fc ± 15 MHz
fc ± 24 MHz
-
-
35 dB
38 dB
40 dB
135,420 MHz ± 200
kHz
max
3
dB
min
30
dB
min
35
dB
min
38
dB
Group delay ripple: fc ± 1,0 MHz
35 ns
max 80
ns
Temperature coefficient of frequency ( Tc_f )
-19 ppm/K
-
Frequency deviation of fc over temperature T:
∆fc(Hz) = Tc_f(ppm/K) x (T - T_A) x f_CAT (MHz)
Operating temperature range
Storage temperature range
- 10 °C ... + 85 °C
- 25 °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:
VI TELEFILTER
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D 14 513 TELTOW / Germany
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