TFS246M Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter Specification

tfs246m.doc
version 1.5
06.01.02
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VI TELEFILTER
Filter Specification
TFS 246 M - 1/4
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Measurement condition
Ambient temperature: 23 °C
Input power level:
0 dBm
Terminating impedances
for input: 600 Ω // - 1,45 pF
for output: 600 Ω // - 1,45 pF
External coil:
108 nH
Construction
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 246 M 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 246 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
(Reference level)
ae = amin
-
max 5
dB
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Nominal frequency
fN
-
246,000 MHz
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Pass band ripple
fN - 85 kHz ... fN + 93 kHz
-
max 1,5 dB
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Relative attenuation
arel
fN ± 120 kHz
-
max 3
dB
fN ± 330 kHz ... fN ± 400 kHz
-
min 18
dB
fN ± 400 kHz ... fN ± 600 kHz
fN ± 600 kHz ... fN ± 800 MHz
-
min 25
dB
-
min 40
dB
fN ± 800 kHz ... fN ± 1,6 MHz
-
min 45
dB
fN + 1,6 MHz ... fN + 20 MHz
fN + 20 MHz ... fN + 100 MHz
-
min 46
dB
-
min 50
dB
fN - 1,6 MHz ... fN - 3,0 MHz
fN - 3,0 MHz ... fN - 20 MHz
-
min 45
dB
-
min 46
dB
fN - 20 MHz ...fN - 40 MHz
-
min 43
dB
fN - 40 MHz ...fN - 100 MHz
-
min 50
dB
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Group delay distortion GDD
fN ± 50 kHz
-
max 1,2 µs
fN ± 70 kHz
-
max 1,5 µs
fN ± 100 kHz
-
max 2,5 µs
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Operating temperature range
- 20 °C ... + 70 °C
Storage temperature range
- 30 °C ... + 85 °C
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Temperature coefficient of frequency TCf
- 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]
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [e-mail]
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