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TFS398N Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification
Filename: tfs 398n.doc
Vectron International
Version 1.1
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
120 Ω || -8,4 pF
180 Ω || -7,6 pF
TFS 398N
04.06.2009
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 398N 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 fc is the arithmetic mean value of the upper and lower frequencies at the 1,5 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 398,0 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved at the frequencies given below even 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
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
Relative attenuation
fN
fN ±
fN -
fN +
13,0
298
40
... fN ±
MHz ... fN ±
MHz ... fN -
MHz ... fN +
Phase linearity within PB
13,0
17,0
30,5
602
Input power level
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
ae
fN
fC
PB
arel
MHz
MHz
MHz
MHz
OTR
TCf **
typ. value
9,7 dB
-
398,0
-
0,8
MHz
dB
0,7
0,8
46
60
1
-
-
-
-87
dB
dB
dB
dB
°rms
ppm / K
tolerance / limit
max.
14,0 dB
398,0 MHz
-
fN ± 17,0 MHz
max.
1,5 dB
max.
max.
min.
min.
1 dB
1,5 dB
40 dB
40 dB
max.
4,0 ° rms
max.
10,0 dBm
- 40 °C ... + 85 °C
- 40 °C ... + 85 °C
-
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as reference
values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.
**) ∆f(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz)
Generated:
Checked / Approved:
Vectron International GmbH & Co. KG
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail: tft@vectron.com
Vectron International GmbH & Co. KG reserves the right to make changes to the product(s) and/or information contained herein without
notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such
product(s) or information.