TFS179 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

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VI TELEFILTER
Filter Specification
TFS 179
1/5
______________________________________________________________________________________________________
Measurement condition
Ambient temperature: 23
Input power level:
0
Terminating impedances:
for input:
for output:
°C
dBm
470 Ohm // 0.8 pF (measured between the two source pins)
470 Ohm // 0.8 pF (measured between the two load pins)
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 179 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 f_c is the arithmetic mean value of the upper and lower frequencies at the
3dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 179,55 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
Insertion loss
ae
(Reference level)
Nominal frequency
Centre frequency
3 dB bandwidth
f_N
f_C
BW
Pass band ripple
f_N ± 10 kHz
Relative attenuation
arel
@f_N ± 200 kHz
@f_N ± 910 kHz
Operating temperature range
Storage temperature range
Temperature coefficient of frequency TC
Frequency inversion temperature
typ. value
2,7 dB
-
179,554 MHz
86
kHz
0.3
dB
63
dB
80
dB
- 0,036 ppm/K²
+ 25
°C
tolerance/limit
max. 5
dB
179,550 MHz
-
max. 1
dB
min. 50
dB
min. 50
dB
- 10 °C ... + 60 °C
- 30 °C ... + 85 °C
Generated:
Checked / approved:
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Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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