TFS171A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

File name: Tfs171A.doc
VI TELEFILTER
version 1.4
Filter Specification
26.04.2002
TFS 171A
1/5
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances in fc *) :
23 °C
0 dBm
for input:
for output:
960 Ω  -8,3. pF.
1,17 KΩ  -7,5. pF.
2. Characteristics :
Remark: Reference level for the relative attenuation arel of the TFS 171A 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 nominal frequency f_N is fixed to 171,20 MHz. The centre frequency fc is
the arithmetic mean value of the upper and lower frequencies at the 20 dB filter attenuation level relative to the insertion loss ae. All specified
parameters have to be reached in the operating temperature range.
Data
Insertion loss at ambient temperature :
Nominal frequency
f_N
Centre frequency at ambient temperature fc
Bandwidth
1 dB - band width
3 dB - band width
20 dB - band width
Relative attenuation
arel
f_N
.... f_N ± 0,2 MHz
f_N ± 0,2 MHz .... f_N ± 0,45 MHz
typ. value
5,5 dB
-
171,22 MHz
870 kHz
1350 kHz
2680 KHz
-
-
tolerance / limit
9,5
dB
171,2
MHz
171,2 ± 0,1 MHz
min. 400
kHz
min. 900
kHz
max. 3300 kHz
max. 1
dB
max. 3
dB
f_N ± 1,65 MHz .... f_N ± 5
f_N ± 5 MHz .... f_N ± 40
f_N ± 40 MHz .... f_N ± 100
MHz
MHz
MHz
33 dB
46 dB
55 dB
min. 20
dB
min. 35
dB
min. 45
dB
Group delay ( mean value)
Group delay ripple in
Phase ripple in
Input power level
f_N ± 200 kHz
f_N ± 200 kHz (p-p)
f_N ± 200 kHz (p-p)
740 ns
50 ns
4°
-
max. 1
µs
max. 400
ns
max. 10
dBm
Frequency inversion temperature ( T_o ) :
Temperature coefficient of frequency ( Tc_f ) :
Frequency deviation of fc over temperature: ** )
20..25 °C
- 0,036 ppm/K²
∆fc(Hz) = Tc_f(ppm/K) x (T - T_o)² x f_O (MHz)
Operating temperature range ( OTR ) :
- 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.
Generated:
Checked/Approved:
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Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
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