TFS245D Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 245d.doc
VI TELEFILTER
Version 1.0
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
External Coil:
23
°C
0
dBm
530 Ω || -2.4 pF
530 Ω || -2.4 pF
270 nH
TFS 245D
25.07.2007
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 245D is the minimum of the pass band attenuation. This value is defined as the insertion
loss ae. The nominal frequency fN is fixed at 245.76 MHz without any tolerance. The values of relative attenuation arel are guaranteed for the whole
operating temperature range. The frequency shift of the filter in the operating temperature range is included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss
(reference level)
ae
3.0
dB
-
max.
5 dB
-
Nominal frequency
f_N
-
245,76 MHz
Passband
Pass band ripple
PB
-
0,5 dB
f_N
± 89 kHz
max.
1,5 dB
Relative attenuation
f_N
… f_N ±
f_N ±
f_N ±
f_N ±
f_N ±
f_N ±
f_N ±
f_N ±
330
400
600
800
1,6
3,0
20
kHz ... f_N ±
kHz ... f_N ±
kHz ... f_N ±
kHz ... f_N ±
MHz ... f_N ±
MHz ... f_N ±
MHz ... f_N ±
120
400
600
800
1,6
3,0
20
100
arel
kHz
kHz
kHz
MHz
MHz
MHz
MHz
MHz
1,5 dB
22
dB
33
dB
41
dB
47
dB
52
dB
54
dB
55
dB
max.
min.
min.
min.
min.
min.
min.
min.
3 dB
18 dB
25 dB
40 dB
45 dB
45 dB
46 dB
45 dB
Group delay ripple
f_N ± 50
kHz
f_N ± 70
kHz
f_N ± 100
kHz
0,5 µs
0,8 µs
1,2 µs
max.
max.
max.
1,2 µs
1,5 µs
2,5 µs
Input power level
-
max.
10 dBm
Operating temperature range
OTR
-
- 40 °C ... + 85 °C
Storage temperature range
-
- 40 °C ... + 85 °C
Frequency inversion temperature
25
°C
-
Temperature coefficient of frequency
TCf **
-0,036 ppm/K²
-
*) 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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assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.