TFS244 Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter specification

t_{_}fs_{_}2_{_}44_{_}._{_}D_{_}O_{_}C_{_________________________________________________________}v_{_}e_{_}rs_{_}i_{_}on_{__}1_{_}.0_{___________________________}0_{_}1_{_}/_{_}99_{_}
V_{__}I_{__}T_{_}E_{__}L_{_}E_{__}F_{_}I_{_}L_{__}T_{_}E_{__}R_{_______________________}F_{__}i_{_}lt_{_}e_{__}r_{__}s_{_}p_{__}e_{_}c_{__}if_{_}i_{_}c_{_}a_{__}ti_{_}o_{__}n_{__________________}T_{__}F_{_}S_{___}2_{__}4_{_}4_{_______}1_{__}/4_{____}
Measurement condition
Ambient temperature:
Input power level:
Source impedance:
Load impedance:
Ext.coil:
23 °C
0 dBm
340 Ω || -5 pF
340 Ω || -5 pF
116 nH
Construction and pin connection
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 244 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 fo 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 nominal frequency fN is fixed on 244 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 fo 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 fo.
Preliminary Data
typ. value
tolerance / limit
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Insertion loss
ae = amin
6
dB
max 8
dB
(Reference level)
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N_{__}o_{_}r_{_}m_{_}i_{_}n_{_}a_{_}l _{_}f_{_}r_{_}e_{_}q_{_}u_{_}e_{_}n_{_}c_{_}y_{______}fN_{________________________________________________________________2_4_4______M_H_z_____}
Relative attenuation
arel
244 MHz ± 80 kHz
-
max 3
dB
244 MHz ± 200 kHz ... 244 MHz ± 400 kHz
12
dB
min 2
dB
244 MHz ± 400 kHz ... 244 MHz ± 600 kHz
34
dB
min 25
dB
244 MHz ± 600 kHz ... 244 MHz ± 1,6 MHz
40
dB
min 35
dB
244 MHz - 1,6 MHz ... 244 MHz - 3 MHz
50
dB
min 45
dB
244 MHz + 3 MHz ... 244 MHz + 25 Mhz
>50
dB
min 50
dB
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Group delay distortion GD
3,6
µs
-
244 MHz ± 50 kHz
1
µs
max 1,2 µs
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Operating temperature range
- 40 °C ... + 85 °C
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Temperature coefficient of frequency TC
ca. - 0,036 ppm/K²
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Frequency inversion temperature
+ 25°C
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Generated:
Checked / approved:
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VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: [phone] / Fax: [phone]
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