TFS241A Datasheet, PDF (1/4 Pages) Vectron International, Inc – SAW filter specification

tfs241a.doc
version1.0
06.01.02
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TELE FILTER tft GmbH
SAW filter specification
TFS 241 A 1/4
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Measurement condition
Ambient temperature:
Input power level:
Source impedance:
Load impedance:
Ext coil:
23 °C
-10 dBm
580 Ω || -1,4 pF
580 Ω || -1,4 pF
140 nH
Construction
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 241 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 241 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
(Reference level)
ae = amin
3,9 dB
max 5
dB
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Nominal frequency
fN
-
241,000 MHz
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Pass band ripple
fN - 80 kHz ... fN + 90 kHz
0,5 dB
max 1,5 dB
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Relative attenuation
arel
FN _–
fN ±
fN ±
fN ±
fN ±
fN ±
fN ±
80
330
400
600
1,6
3
10
kHz... ^{fN +}
kHz ... fN ±
kHz ... fN ±
kHz ... fN ±
MHz ... fN ±
MHz ... fN ±
MHz ... fN ±
90
400
600
1,6
3
10
25
kHz
kHz
kHz
MHz
MHz
MHz
MHz
0,5 dB
28
dB
40
dB
52
dB
55
dB
60
dB
55
dB
max 1,5 dB
min 18
dB
min 28
dB
min 40
dB
min 48
dB
min 50
dB
min 45
dB
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Group delay distortion GDD
fN ±
70 kHz
0,5 µs
max 1,5 µs
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Operating temperature range
- 20 °C ... + 70 °C
Storage temperature range
- 40 °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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