TFS374D Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs374d.doc
VI TELEFILTER
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances *)
for input:
for output:
23 C
5 dBm
277 || -3.5 pF
177 || -4.9 pF
version 1.2
TFS 374D
08.10.2003
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS374D is the minimum of the pass band attenuation amin. This value 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 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
ae
(Reference level)
Nominal frequency
f_N
Centre frequency
f_C
3 dB bandwidth
BW
Relative attenuation
f_N
f_N ± 7
... f_N ±
MHz ... f_N ±
arel
7 MHz
8,5 MHz
f_N - 100
f_N - 33
f_N - 22
f_N + 16,5
f_N + 22
f_N + 43
MHz ... f_N -
MHz ... f_N -
MHz ... f_N -
MHz ... f_N +
MHz ... f_N +
MHz ... f_N +
33
22
16,5
22
43
100
MHz
MHz
MHz
MHz
MHz
MHz
Group delay ripple in fN ± 7 MHz
typ. value
8,7 dB
-
374,000 MHz
23
MHz
0,8 dB
-
54
dB
53
dB
40
dB
44
dB
48
dB
49
dB
40
ns
tolerance/limit
max. 10
dB
374,000 MHz
-
min. 17
MHz
max. 1
dB
max. 3
dB
min. 45
dB
min. 40
dB
min. 30
dB
min. 30
dB
min. 35
dB
min. 40
dB
max. 100
ns
Triple transit suppression
40
dB
min. 30
dB
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
Input power level
TCf **)
-
-
-87
ppm/K
-
- 10 °C ... + 85 °C
- 40 °C ... + 85 °C
-
max. 10 dBm
*) 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/K) x (T-T0) 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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