TFS70L Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs70L.doc
VI TELEFILTER
Filter specification
Version 5.3
TFS 70L
14.02.2002
1/5
1. Measurement condition :
Ambient temperature TA:
Input power level:
Terminating impedance fc * ) :
25 °C.
0 dBm.
for input:
for output:
50 Ω  33 pF.
50 Ω  0 pF.
2. Characteristics :
Remark:
Reference level for the relative attenuation arel of the TFS 70L 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
Centre frequency fc at ambient temperature (fCTA)
24,5 dB
70,0 MHz
max. 27 dB
70,00 ± 0,10 MHz
Pass band :
PB
Amplitude ripple in PB :
0,4 dB
fc ... fc ± 3,9 MHz
max. 1,0 dB
Bandwidth ( BW ) :
1 dB
2 dB
3 dB
20 dB
25 dB
30 dB
at ambient temperature TA
8,12 MHz
8,26 MHz
8,36 MHz
8,98 MHz
9,08 MHz
9,17 MHz
min. 7,8 MHz
min. 8,2 MHz
max. 9,0 MHz
max. 9,2 MHz
Relative attenuation
arel
fc ..... fc ± 3,9 MHz
fc ± 3,9 MHz ..... fc ± 4,1 MHz
fc ± 4,5 MHz ..... fc ± 4,7 MHz
fc ± 4,7 MHz ..... fc ± 6 MHz
fc ± 6 MHz ..... fc ± 30 MHz
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB :
-
-
25
dB
35
dB
50
dB
2,94 µs
60
ns
4° (r.m.s. 0,9 °)
max. 1
dB
max. 2
dB
min. 20
dB
min. 25
dB
min. 35
dB
max. 3
µs
max. 100
ns
Triple transit attenuation compared to main signal
Crosstalk
54
dB
60...65
dB
Temperature coefficient of frequency ( Tcf ) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
- 87
ppm/K
∆fc(Hz) = Tcf(ppm/K) x (T - TA) x fCTA (MHz)
- 25 °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:
Dunzow W.
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
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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