TFS350D Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 350d.doc
VI TELEFILTER
Version 1.3
Filter specification
TFS 350D
14.05.2004
1/5
Measurement condition
Ambient Temperature: 23
Input Power Level:
0
Terminating Impedance at fc*:
C
dBm
output:
input:
47 // 7,5 pF
47 // 7,2 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 350D is the minimum of the pass band attenuation amin. This minimum is defined as the
insertion loss ae. The nominal frequency fN is fixed at 350 MHz without any tolerance. The given values for the relative attenuation arel and the group
delay ripple have to be reached 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)
ae = amin
typ. Value
16 dB
Limit
max. 20,0 dB
Nominal Frequency
fN
-
350,0 MHz
Pass Band
PB
Amplitude Ripple within PB
-
fN
0,75 MHz
-
max. 0,5 dB p-p
Group Delay Variation within PB
110 ns
max. 180 ns
Return loss in PB
10 dB
-
Relative Attenuation
fN
... fN ±
fN ± 4,45 MHz ... fN ±
fN ± 30 MHz ... fN ±
arel
0,75 MHz
30 MHz
350 MHz
0,5 dB
48 dB
53 dB
max.
min.
min.
0,7 dB
40 dB
50 dB
Operating Temperature Range
Storage Temperature Range
Turnover temperature To
Temperature Coefficient of frequency TCf**
-
-
30 °C
- 0,036 ppm / K²
-40...
-55... +85
-
-
+85° C
°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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