TFS70BA Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 70ba.doc
VI TELEFILTER
Version 1.0
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
External Coil:
23
°C
0
dBm
2900 Ω || -3,8 pF
2900 Ω || -3,8 pF
820 nH
TFS 70BA
18.08.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 70BA 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 70,0 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved 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
Insertion loss
(reference level)
Nominal frequency
Centre frequency at ambient temperature
Passband
Pass band ripple
Relative attenuation
f_N
f_N ± 35
f_N ± 60
f_N ± 90
f_N ± 450
f_N ± 500
… f_N ± 35
kHz … f_N ± 47
kHz … f_N ± 90
kHz … f_N ± 450
kHz … f_N ± 500
kHz … f_N ± 10
Input power level
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
ae
f_N
f_C
PB
arel
kHz
kHz
kHz
kHz
kHz
MHz
OTR
TCf **
typ. value
3,7 dB
-
70,002 MHz
-
0,5 dB
0,5 dB
2,0 dB
2,5 dB
10
dB
45
dB
43
dB
-
-
25
-0.043
°C
ppm/K²
tolerance / limit
max.
6,0 dB
70,0
f_N
max.
70,0 MHz
± 0,015 MHz
± 35 kHz
1,0 dB
max.
max.
min.
min.
min.
min.
1,0 dB
3,0 dB
1,0 dB
3,0 dB
35 dB
40 dB
max.
8 dBm
- 5 °C ... + 70°C
- 30 °C ... + 90°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.
**) ∆fc(Hz) = TC_f(ppm/K²) x (T - T_o)² x f_To (MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.