TFS85F Datasheet, PDF (1/5 Pages) Vectron International, Inc – Preliminary specification

Tfs85f.doc
VI TELEFILTER
Preliminary specification
version 1.1
TFS 85 F
21.05.2003
1/5
Measurement condition
Ambient temperature:
23 C
Input power level:
0 dBm
Terminating impedances at fc *: input: 2,76 k
output: 2,33 k
// -10,3 pF (preliminary value)
// -13,1 pF (preliminary value)
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 85 F 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 5 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 85,38 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
Pass band
PB
Pass band ripple (p-p)
8
dB
-
85,38
MHz
-
-
max. 12 dB
85,38 MHz
-
fN
0,3 MHz
max. 0,8 dB
Relative attenuation
arel
fN
....... fN ± 0,3 MHz
fN ± 0,3 MHz ....... fN ± 0,63 MHz
fN ± 0,9 MHz ....... fN ± 1,25 MHz
fN ± 1,25 MHz ....... fN ± 1,7 MHz
fN ± 1,7 MHz ....... fN ± 2,05 MHz
fN ± 2,05 MHz ....... fN ± 9 MHz
fN ± 9 MHz ....... fN ± 20 MHz
0,4 dB
4,5 dB
40
dB
36
dB
36
dB
50
dB
65
dB
max. 0,8 dB
max. 5 dB
min. 33 dB
min. 33 dB
min. 33 dB
min. 33 dB
min. 45 dB
Phase linearity in
fN ± 0,63
MHz
1,8
°rms
max. 3,5
°rm
Operating temperature range
-
- 30 °C .. + 80 °C
Storage temperature range
-
- 40 °C .. + 85 °C
Temperature Coefficient of frequency TCf **
- 0,036 ppm / K2
-
Frequency inversion temperature
t.b.d.
-
*) 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/K²) x (T-T0)² x fTo(MHz)
generated:
checked / approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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