TFS120 Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter Specification

Tfs120.doc
VI TELEFILTER
Version 1.2
Filter Specification
23.03.2000
TFS 120 - 1/4
Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedances at f_N:
Q-value of matching elements:
23 °C
0 dBm.
for input:
for output:
30
460 Ω  - 11,2 pF.
440 Ω  - 13,0 pF.
( typical value.)
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 120 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
25 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 120 MHz without tolerance. The given values for
the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency fc is
shifted due to the temperature coefficient of frequency Tcf in the operating temperature range and due to a production tolerance for the centre
frequency fc.
Data
typ. value
tolerance / limit
Insertion loss (Reference level) : ae
Nominal frequency :
fN
Centre frequency fc at ambient temperature ( fCAT )
12,50 dB
120,01 MHz
max 15
120
dB
MHz
Pass band :
Bandwidth :
1 dB - band width
25 dB - band width
Amplitude ripple in pass band (p-p):
fN – 100 kHz ..... fN + 100 kHz
260 kHz
764 MHz
0,7 dB
min. 200 kHz
max. 800 kHz
max. 1,0 dB
Relative attenuation
arel :
fN
fN ± 400
fN ± 600
fN ± 1,0
..... fN ± 100
kHz ... fN ± 600
kHz ... fN ± 1000
MHz ... fN ± 35
kHz
kHz
kHz
MHz
Group delay (mean value in pass band) :
Group delay ripple in pass band (p-p) :
Deviation from linear phase in pass band :
-
-
-
-
3,81 µs
100...150 ns
-
max. 1 dB
min. 25 dB
min. 35 dB
min. 45 dB
max. 4,0 µs
max. 200 ns
Triple transit attenuation compared to main signal
Crosstalk attenuation compared to main signal
40...50 dB
55...60 dB
Frequency inversion temperature ( To )
Temperature coefficient of frequency ( Tcf )
Frequency deviation of fc over temperature T : *):
Operating temperature range
Storage temperature range
30 °C
-0,042 ppm/ K²
∆fc(Hz) = Tcf x (T - To)² x fTo (MHz)
- 20 °C ... + 75 °C
- 40 °C ... + 85 °C
Permissible DC voltage (VDC )
-
Permissible AC voltage (Vpp )
-
* ) fTo is reference frequency fc at frequency inversion temperature (To )
12 V
10 V
Generated:
Checked / approved :
Dunzow W.
Dr. B.Wall.
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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