TFS70AC Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

TFS 70AC.doc
VI TELEFILTER
Version 1.2
Filter Specification
TFS 70AC
24.11.2003
1/5
Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedances at fc *):
Input:
Output:
25 °C
0 dBm
484 || -22,0pF
127 || -33,4pF
Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 70AC 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 temperature coefficient of frequency Tcf is valid for both the
reference frequency fc and the frequency response of the filter in the operating temperature range.
Data
typ. value
tolerance / limit
Insertion loss
ae
(reference level)
Centre frequency at ambient temperature fc
Pass band
PB
Amplitude ripple within PB
7,5 dB
70
MHz
fc ± 3,6
0.3
MHz
dB
max. 9,5 dB
70,0 ± 0,1 MHz
fc ± 2,8 MHz
max. 1
dB
Relative attenuation
fc
......... fc ± 3,1
fc ± 3,1 MHz ......... fc ± 3,5
fc ± 5,975 MHz ......... fc ± 20
arel
MHz
MHz
MHz
0,5 dB
2
dB
50
dB
max. 1
dB
max. 3
dB
min. 40
dB
Group delay at fc
Group delay ripple in PB
1,21 µs
68
ns
max. 120
ns
Phase linearity in fc ± 2,45 MHz
4
deg p-p
max.8
deg p-p
Operating temperature range
-
- 30 °C ... + 80
°C
Storage temperature range
-
- 40 °C ... + 85
°C
Temperature coefficient of frequency TCf**
- 94
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.
**) fc(Hz) = Tcf(ppm/K) x (T - TA) x fN (MHz)
generated:
checked / approved:
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D 14 513 TELTOW / Germany
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