TFH70F Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

TFH70F.doc
VI TELEFILTER
Measurement condition
Ambient temperature:
25 °C
Input power level:
10 dBm
Terminating impedances *): for input:
for output:
version 1.2
Filter Specification
330 Ω ⎟⎢ -13,7 pF
250 Ω ⎟⎢ -15,7 pF
20.06.2001
TFH 70F 1/5
Remark:
Reference level for the relative attenuation arel of the TFH 70F is the insertion loss. The insertion loss ae is defined as the insertion loss at the
nominal frequency fN . 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 given values for the insertion loss, the relative attenuation arel and 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
ae
(Reference level)
20,6 dB
max. 24,0 dB
Nominal frequency
f_N
Passband
PB
Passband variation
p-p
-
0,25 dB
70,0 MHz
fN ± 0,40 MHz
0,65 dB
3 dB bandwidth
BW
40 dB bandwidth
BW
1,338 MHz
1,988 MHz
min. 1,156 MHz
max. 2,180 MHz
Relative attenuation
f_N ± 0,578 MHz .......
f_N - 1,09
f_N + 1,09
f_N ± 1,50
f_N ± 4,00
MHz .......
MHz .......
MHz .......
MHz .......
arel
f_N - 1,50
f_N + 1,50
f_N ± 4,00
f_N ± 20
MHz
MHz
MHz
MHz
Phase linearity in
Group delay variation in
Absolute group delay
fN ± 0,578 MHz
fN ± 0,578 MHz
43
dB
45
dB
48
dB
54
dB
3,3 °
105
ns
3,1 µs
max. 3
dB
min. 40
dB
min. 40
dB
min. 45
dB
min. 50
dB
max. 5,5 °
max. 175
ns
max. 4,0 µs
Temperature coefficient of frequency Tc_f **)
Operating temperature range
- 0,036 ppm/K²
- 20..+ 80
°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.
**) ∆fc(Hz) = Tc_f(ppm/K²) x (T - T_A)² x f_CAT (MHz)
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]
E-Mail: [e-mail]
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