TFS246H Datasheet, PDF (1/4 Pages) Vectron International, Inc – SAW filter specification

tfs246h.eng
version1.1
06.01.02
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TELE FILTER tft GmbH
SAW filter specification
TFS 246 H 1/4
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Measurement condition
Ambient temperature:
Input power level:
Source impedance:
Load impedance:
Ext coil:
23 °C
0 dBm
490 Ω || -2.62 pF (± 10%)
490 Ω || -2.62 pF (± 10%)
82 nH
Construction
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 246 H 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 H 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.
Data
typ. value
tolerance / limit
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Insertion loss
ae = amin
2,5 dB
max 5
dB
(Reference level)
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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
246,0 MHz ± 120 kHz
1,5 dB
max 3
dB
246,0 MHz ± 330 kHz ... 246,0 MHz ± 400 kHz
246,0 MHz ± 400 kHz ... 246,0 MHz ± 600 kHz
22
dB
33
dB
min 18
dB
min 25
dB
246,0 MHz ± 600 kHz ... 246,0 MHz ± 800 MHz
50
dB
min 40
dB
246,0 MHz ± 800 kHz ... 246,0 MHz ± 1,6 MHz
55
dB
min 45
dB
246,0 MHz ± 1,6 MHz ... 246,0 MHz ± 3,0 MHz
55
dB
min 45
dB
246,0 MHz ± 3,0 MHz ... 246,0 MHz ± 20 MHz
246,0 MHz ± 20 MHz ...246,0 MHz ± 100 MHz
55
dB
55
dB
min 46
dB
min 45
dB
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Group delay distortion GDD
246,0 MHz ± 50 kHz
0,5 µs
max 1,2 µs
246,0 MHz ± 70 kHz
0,8 µs
max 1,5 µs
246,0 MHz ± 100 kHz
1,2 µs
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]
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