TFS243E Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 243e.doc
VI TELEFILTER
Version 1.5
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
350 Ω || -3,8 pF
350 Ω || -3,8 pF
TFS 243E
21.02.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 243E 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 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 243,0 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
typ. value
tolerance / limit
Insertion loss
(reference level)
Nominal frequency
Passband
Pass band ripple
Bandwidth
0,5 dB
3 dB
ae
1,35 dB
f_N
-
PB
0,15 dB
BW
-
440
KHz
max.
2,5 dB
243,0
f ± 25
N
max.
±0,5
MHz
kHz
dB
min. ± 25 kHz
-
Relative attenuation
f_N ±
f_N ±
f±
N
f±
N
f±
N
0,50
1,00
3,00
5,00
8,00
MHz … f_N ±
MHz … f_N ±
MHz … f ±
N
MHz … f ±
N
MHz … f ±
N
Input power level
1,00
3,00
5,00
8,00
20,00
arel
MHz
MHz
MHz
MHz
MHz
15
dB
30
dB
37
dB
43
dB
48
dB
-
min.
min.
min.
min.
min.
max.
7 dB
25 dB
25 dB
25 dB
40 dB
15 dBm
Operating temperature range
OTR
-
- 40 °C ... + 85°C
Storage temperature range
Temperature coefficient of frequency
TCf **
-
-0,032 ppm/K²
- 45 °C ... + 90°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/K²) x (T-T₀)² x fcat(MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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