TFS168A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 168a.doc
VI TELEFILTER
Version 1.4
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
121 Ω || -33 pF
133 Ω || -21.6 pF
TFS 168A
02.05.2005
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 168A 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 1 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 168,50 MHz without tolerance. The given values for the relative
attenuation arel and for 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
typ. value
tolerance / limit
Insertion loss
(reference level)
ae
8,7 dB
max.
10 dB
Nominal frequency
Centre frequency
f_N
-
f_C
168.5
MHz
168.5
-
MHz
Passband
Pass band ripple
23,3 MHz
0,3 dB
f_N
± 10
max.
1
MHz
dB
Relative attenuation
arel
f_N
... f_N ± 10
MHz
0,3 dB
max.
1 dB
f_N -
f_N +
f_N +
f_N +
f_N +
167
21,5
81,5
141,5
241,5
MHz ... f_N -
MHz ... f_N +
MHz ... f_N +
MHz ... f_N +
MHz ... f_N +
Group delay ripple within PB
19,5
81,5
141,5
241,5
831,5
MHz
MHz
MHz
MHz
MHz
41
dB
39
dB
60
dB
60
dB
65
dB
35
ns
min.
33 dB
min.
33 dB
min.
50 dB
min.
50 dB
min.
50 dB
max. 100 ns
Input power level ***
max.
20 dBm
Operating temperature range
OTR
-
-20 °C .. + 80 °C
Storage temperature range
-
-40 °C .. + 125 °C
Temperature coefficient of frequency
TCf **
-87
ppm/K
-
*) 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/K) x (T - T_o) x f_CAT (MHz).
***) This power level is allowed for short term operation (<100 hours) only, the max. input power for continuous operation is 5 dBm.
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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