TFS300C Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Tfs300C.doc
VI TELEFILTER
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances at fc *) :
Filter specification
25 °C
0 dBm
for input:
for output:
176 Ω  - 6,19 pF.
775 Ω  - 3,52 pF.
version 1.1
TFS 300 C
08.04.2002
1/5
2. Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 300C 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 on 300 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 also 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
Nominal frequency
Centre frequency
fN
fc at ambient temperature (f_CTA)
17
dB
-
300,02 MHz
max. 20
300
dB
MHz
Pass band ( PB ) :
Amplitude ripple in PB (p-p) :
0,8 dB
f_N - 2,05 MHz ... f_N + 2,05 MHz
max. 1
dB
Bandwidth :
1 dB
3 dB
3 dB
20 dB
40 dB
4,55 MHz
5,25 MHz
5,25 MHz
6,96 MHz
9,30 MHz
min. 4,1
min. 5,0
max. 5,5
max. 10
MHz
MHz
MHz
MHz
Relative attenuation
arel
fN ...... fN ± 2,05 MHz
fN ± 2,05 MHz .... fN ±
2,5 MHz
fN ± 2,75 MHz .... fN ±
5
fN ± 5
MHz .... fN ±
7
fN - 25
MHz .... fN -
7
fN + 7
MHz .... fN + 25
fN ± 25
MHz .... fN ± 100
fN - 290
MHz .... fN - 100
fN +100
MHz .... fN + 700
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-
-
-
43...45 dB
49...54 dB
49...54 dB
55...70 dB
90 dB
90 dB
max. 1
dB
max. 3
dB
min. 3
dB
min. 40
dB
min. 45
dB
min. 43
dB
min. 50
dB
Group delay ( mean value in PB ):
Group delay ripple (p-p) in :
fN ... fN ± 2,2 MHz
Deviation from linear phase (p-p) fN ... fN ± 1,8 (2,5) MHz
1,1 µs
60 ns
2° (2,6°)
max. 1,5 µs
max. 100
ns
Triple transit attenuation compared to main signal
Crosstalk
Substrate material
Frequency inversion temperature ( T_o )
Temperature coefficient of frequency ( Tc_f )
Frequency deviation of fc over temperature: ** )
39 dB
60...65 dB
Quartz
30 °C
-0,030 ppm/K²
∆fc(Hz) = Tc_f(ppm/K) x (T - T_o)² x f_To (MHz)
Operating temperature range
Storage temperature range
- 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_O = f_To is reference frequence fc at frequency inversion temperature (T_o )
Generated:
Checked / approved:
Dunzow W.
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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