TFS167E Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs167E.doc
VI TELEFILTER
Filter Specification
version 1.4
TFS 167E
22.05.2003
1/5
Measurement condition
Ambient temperature:
23 C
Input power level:
0 dBm
Terminating impedances at fc *:
input: 984
output: 853
II – 8,9 pF
II – 8,2 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 167E 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 167 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
Limit
Insertion loss
ae
(Reference level)
Nominal frequency
fN
6,3 dB
-
max. 8 dB
167 MHz
Pass band
PB
-
fN
0,1 MHz
Amplitude ripple in PB p-p
-
max. 1,0 dB
Relative attenuation
arel
fN
....... fN ± 0,1
fN ± 0,4 MHz ...... fN ± 0,6
fN ± 0,6 MHz ...... fN ± 1
fN ± 1 MHz ....... fN ± 2
fN ± 2 MHz ....... fN ± 75
MHz
MHz
MHz
MHz
MHz
-
37 dB
38 dB
44 dB
48 dB
max. 1 dB
min. 30 dB
min. 35 dB
min. 40 dB
min. 45 dB
Group delay ( mean value in pass band ):
2,8 µs
max. 3 µs
Group delay ripple in pass band (p-p):
135 ns
max. 200 ns
Temperature coefficient of frequency Tcf
Operating temperature range
Storage temperature range
Turnover temperature To
-0,043 ppm/K²
-
-
28
°C
-
- 20 °C.. + 70 °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.
**) f(Hz) = TCf(ppm/K²) x (T-T0)² x fTo(MHz)
generated:
checked / approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
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