TFS174D Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

File:TFS174D.doc
VI TELEFILTER
version 1.4
Filter Specification
Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc: *
25 °C ± 2°C
0 dBm
input:
output:
490 Ω ⎟⎢ -12,9 pF
450 Ω ⎟⎢ -11,9 pF.
TFS 174D
21.12.2006
1/5
Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 174D 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 174,2 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
ae
(reference level)
6,3 dB
max. 8,0 dB
Nominal frequency
f_N
Centre frequency
f_C
Passband
PB
Amplitude ripple in PB p-p
3 dB bandwidth
BW
-
174,21 MHz
-
0,10 dB
750 kHz
174,2
-
fN ± 67
max. 0,25
MHz
kHz
dB
min. 660
kHz
Relative attenuation
arel
f_N
.......
f_N ± 67 kHz
f_N ± 67 kHz ....... f_N ± 125 kHz
f_N ± 125 kHz ....... f_N ± 200 kHz
f_N ± 200 kHz ....... f_N ± 330 kHz
f_N ± 469
f_N ± 600
f_N ± 860
f_N ± 1,2
f_N - 154,2
f_N + 6,0
kHz .......
kHz .......
kHz .......
MHz .......
MHz .......
MHz .......
f_N ± 600
f_N ± 860
f_N ± 1,2
f_N ± 6,0
f_N - 6,0
f_N + 225,8
kHz
kHz
MHz
MHz
MHz
MHz
0,10 dB
0,10 dB
0,25 dB
2,6 dB
7 dB
18 dB
30 dB
46 dB
60 dB
60 dB
max.
max.
max.
max.
0,25 dB
1,00 dB
1,20 dB
3
dB
min. 4
dB
min. 11
dB
min. 20
dB
min. 40
dB
min. 50
dB
min. 50
dB
Absolute group delay in f_N ± 200 kHz
Group delay variation in f_N ± 200 kHz
2,11 µs
100 ns
max. 2,6 µs
max. 260
ns
Input power level
-
max. 22
dBm ***)
Return loss in PB
Operating temperature range
18 dB
-
min. 10
dB
-5 °C ... + 85°C
Storage temperature range
-
- 40 °C ... + 85 °C
Frequency inversion temperature T₀
+ 40 °C
-
Temperature coefficient of frequency Tc_f **
- 0,04 ppm/K²
-
*) 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)² x fTo(MHz).
***) This power level is allowed for short term operation only. The max. input power for continuous operation is max. 15 dBm only.
Generated:
Checked / Approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed as a result
of their use or application. No rights under any patent accompany the sale of any such product(s) or information.