TFS175D Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Tfs175d.doc
VI TELEFILTER
Filter specification
version 1.4
TFS 175 D
29.05.2002
1/5
Measurement condition
Ambient temperature:
23 °C
Input power level:
0 dBm
Terminating impedances at fc *: input:
output:
570 Ω // -5,4 pF
500 Ω // -6,4 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 175 D 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 175,400 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
Centre frequency
fc
6
-
175,4
dB
MHz
max. 8 dB
175,4 MHz
1 dB Passband
PB
770
kHz
fN ± 250 kHz
Amplitude ripple in PB p-p
-
max. 1 dB
Relative Attenuation
arel
fN ± 5,0 MHz ....... fN ± 10,0 MHz
fN + 10,0 MHz ....... fN + 12,0 MHz
fN + 12,0 MHz ....... fN + 75,0 MHz
fN + 75,0 MHz ....... fN + 1,0 GHz
fN – 75,0 MHz ....... fN - 10,0 MHz
fN - 174,4MHz ....... fN - 75,0 MHz
Group delay variation in PB
50
dB
53
dB
60
dB
60
dB
65
dB
70
dB
60
ns
min. 30 dB
min. 50 dB
min. 55 dB
min. 50 dB
min. 55 dB
min. 50 dB
max. 200 ns
Time domain response **
5 µs
10 µs
15 µs
20 µs
40 µs
-62
dBc
-85
dBc
-85
dBc
-85
dBc
-95
dBc
min –30 dBc
min –50 dBc
min –70 dBc
min –80 dBc
min –90 dBc
Input Power Level
Voltage between any two terminals
Temperature coefficient of frequency Tc_f
Operating temperature range
Storage temperature range
-
-
- 0,036 ppm/K²
-
-
max. 20
max 30
dBm***)
V
-10 °C .. + 85 °C
- 40 °C.. + 125 °C
Out of band intermodulation results
max. -56 dBm
input signals at 176 and 176,6 MHz at 4 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.
**) Values are relative to the centre of the main response lob
***) This power level is only allowed for short term operation, the max. input power for continuous operation is only max. 15 dBm
generated:
checked / approved:
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Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
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