TFS70H21 Datasheet, PDF (1/6 Pages) Vectron International, Inc – Filter Specification

TFS70H21.doc
VI TELEFILTER
Filter Specification
Measurement condition
Ambient temperature:
25 C
Input power level:
10 dBm
Terminating impedances *:
for input:
for output:
53,5 // -8,3 pF
53,5 // -8,4 pF
version 1.3
27.11.01
TFS 70H21 1/5
Remark:
Reference level for the relative attenuation arel of the TFS 70H21 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 reference frequency fc is the arithmetic mean value of the upper and lower
frequencies at the 1 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tcf is valid both for the
reference frequency fc and the frequency response of the filter at the operating temperature. The frequency shift of the filter at the operating
temperature not included in the production tolerance scheme.
Data
Insertion loss
ae
(Reference level)
Centre frequency
fc
typ. value
17,5 dB
70,0 MHz
tolerance/limit
max. 20,0 dB
70,0 ± 0,04 MHz
1 dB bandwidth
BW
40 dB bandwidth
BW
Relative attenuation
arel
fc - 0,08 MHz .......fc + 0,08 MHz
fc ± 0,50 MHz ....... fc ± 0,75 MHz
fc ± 0,75 MHz ....... fc ±10,00 MHz
Phase linearity in PB
Group delay in PB
Group delay variation in PB
0,17 MHz
0,93 MHz
-
70
dB
0,7 °
3,0 µs
150
ns
min. 0,16 MHz
max. 1,00 MHz
max. 1
dB
min. 40
dB
min. 50
dB
max. 3
°
-
max. 300
ns
Temperature coefficient of frequency ( Tcf )
Frequency deviation of fc over temperature T:
Operating temperature
- 0.036
ppm/K²
fc(Hz) = Tcf(ppm/K²) x (T - TA)² x fCAT (MHz)
- 20..... + 70
°C
Storage temperature range
- 25..... + 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:
VI TELEFILTER
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Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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