TFS70Z Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs70z.doc
VI TELEFILTER
Filter Specification
version 1.3
TFS 70 Z
27.03.2003
1/5
Measurement condition
Ambient temperature:
23
Input power level:
0
Terminating impedances at fc *:
C
dBm
input: 1,85 k
output: 1,49 k
// -14,5 pF
// -14,1 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 70Z 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 2 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 70 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)
5,2 dB
max. 8 dB
Nominal frequency
fN
-
70 MHz
Pass band
PB
-
fN
0,15 MHz
Amplitude ripple in PB p-p
-
max. 2 dB
Relative attenuation
fN
.......
fN ± 0,5 MHz ......
fN ± 1 MHz ......
arel
fN ± 0,15
fN ± 1
fN ± 2
MHz
MHz
MHz
1
dB
40
dB
43
dB
max. 2 dB
min. 35 dB
min. 40 dB
Group delay ripple in PB p-p
0,45 µs
max. 2 µs
Temperature coefficient of frequency Tcf
Operating temperature range
-0,036 ppm/K²
-
-
- 25 °C.. + 80 °C
Storage temperature range
-
- 40 °C.. + 85 °C
Turnover temperature To
25
°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(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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