TFS338 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 338.doc
VI TELEFILTER
Version 1.4
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
25
°C
0
dBm
712 Ω || -6,3 pF
770 Ω || -6,0 pF
TFS 338
19.10.2007
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 338 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 338,625 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
ae
(reference level)
Insertion loss variation over OTR
Nominal frequency
f_N
Centre frequency
f_C
Passband
PB
Pass band ripple
(p-p)
Relative attenuation
f_N
f_N ±
f_N ±
f_N ±
… f_N ±
3,15 MHz … f_N ±
3,3 MHz … f_N ±
12
MHz … f_N ±
2,37
3,3
12
50
arel
MHz
MHz
MHz
MHz
Average group delay
Group delay ripple within PB
Triple transit response suppression
Return loss
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
OTR
TCf **
typ. value
11,5 dB
0,8 dB
-
338,625 MHz
-
0,5 dB
0,8 dB
36
dB
39
dB
47
dB
1080
ns
125
ns
45
dB
16
dB
-
-
32
-0,036
°C
ppm/K²
tolerance / limit
max.
16,0 dB
max.
f_N
max.
± 1 dB
338,625 MHz
-
± 2,37 MHz
1,5 dB
max.
min.
min.
min.
1,5 dB
32 dB
36 dB
40 dB
max. 1750 ns
max. 150 ns
min.
40 dB
min.
10 dB
- 20 °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.
**) ∆fc(Hz) = Tc_f(ppm/K²) x (T - T_A)² x f_CAT (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.