TFS140A2 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

File name: Tfs 140A2.doc
VI TELEFILTER
Filter Specification
Version 1.6
TFS 140A2
14.11.2001
1/5
1. Measurement condition :
Ambient temperature TA:
Input power level:
Terminating impedances at fc * ) :
23 °C
0 dBm.
for input: 214
for output: 189
- 13,022 pF.
- 13,607 pF.
2. Characteristics :
Remark: Reference level for the relative attenuation arel of the TFS 140A1 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 reference 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 both for the
reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency shift of the filter in the operating
temperature range is not included in the production tolerance scheme
Data
typ. value
tolerance / limit
Insertion loss (Reference level) ae
23,5 dB
max. 25 dB
Centre frequency fc at ambient temperature TA (fCAT)
140,01 MHz
140 ± 0,10 MHz
Pass band at ambient temperature TA:
fC - 1,55 MHz.....fC + 1,55 MHz
Amplitude ripple (p-p):
fC ... fC ± 1,35 MHz
fC ± 1,35 MHz fC ± 1,42 MHz
Bandwidth at ambient temperature:
1,0 dB - band width
3 dB - band width
20 dB - band width
40 dB - band width
45 dB - band width
0,5 dB
0,7 dB
2,88 MHz
3,15 MHz
3,83 MHz
4,20 MHz
4,24 MHz
min. 3,0 MHz
max. 4,4 MHz
max. 5,0 MHz
Relative attenuation
arel
fC
fC ± 2,2
fC ± 2,5
............
MHz .....
MHz .....
fC ± 1,5
fC ± 2,5
fC ± 40
MHz
MHz
MHz
Group delay ( mean value in pass band ):
Group delay ripple in pass band (p-p):
Deviation from linear phase in pass band (p-p):
-
45...55 dB
60....70 dB
2,49 µs
65 ns
3,5 ° (r.m.s. 1,4°)
max. 3 dB
min. 40 dB
min. 45 dB
max. 2,5 µs
max. 100 ns
max. 10°
S11 in PB :
S22 in PB :
Triple transit attenuation compared to main signal
Crosstalk
8 dB
8 dB
52 dB
55 dB
min. 40 dB
Substrate material
Frequency inversion temperature ( To )
Temperature coefficient of frequency ( Tcf )
Frequency deviation of fc over temperature: ** )
Operating temperature range
Storage temperature range
Quartz
25° C
-0,045 ppm/K²
fc(Hz) = Tcf(ppm/K) x (T - To)² x fTo (MHz)
0 °C ... + 70 °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.
** ) fTo is reference frequency fc at frequency inversion temperature (To )
Generated:
Dunzow W.P.
Checked / Approved:
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
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E-Mail: [e-mail]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
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E-Mail: [e-mail]
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