TFS243 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 243.doc
VI TELEFILTER
Version 1.3
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
External Coil:
23
°C
0
dBm
310 Ω || -3,4 pF
310 Ω || -3,4 pF
100 nH
TFS 243
15.12.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 243 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 3 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 243 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
Relative attenuation
f_N ± 100
kHz
f_N ±
f_N ±
f_N ±
f_N -
f_N +
f_N +
400
600
800
1,6
1,6
15
kHz … f_N ±
kHz … f_N ±
kHz … f_N ±
MHz … f_N -
MHz … f_N +
MHz … f_N +
600
800
1,6
25
15
25
Group delay ripple
f_N ± 70
kHz
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
ae
f_N
f_C
arel
kHz
kHz
kHz
MHz
MHz
MHz
OTR
TCf **
typ. value
3,2 dB
-
243,0
MHz
30
dB
40
dB
50
dB
57
dB
48
dB
55
dB
1
µs
-
-
+ 25
-0,036
°C
ppm/K²
tolerance / limit
max.
5,0 dB
243,0
-
MHz
max.
min.
min.
min.
min.
min.
min.
3 dB
25 dB
36 dB
45 dB
50 dB
45 dB
50 dB
max.
1,5 µs
- 25 °C ... + 85°C
- 30 °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/K²) x (T-T₀)² x fTo(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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