TFS70H25 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

TFS70H25.doc
VI TELEFILTER
Filter Specification
Measurement condition
Ambient temperature:
25 C
Input power level:
10 dBm
Terminating impedances *:
for input: 385 // -13,4 pF
for output: 524 // -11,6 pF
version 1.3
03.01.02
TFS 70H25 1/5
Remark:
Reference level for the relative attenuation arel of the TFS 70H25 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 temperature coefficient of frequency Tcf is valid for both the reference frequency fc and the frequency
response of the filter on the operating temperature.
Data
Insertion loss
ae
(Reference level)
Nominal frequency
fn
typ. value
21,8 dB
-
tolerance/limit
max. 25,0 dB
70,0 MHz
Passband
PB
Passband variation
p-p
1 dB bandwidth
BW
3 dB bandwidth
BW
40 dB bandwidth
BW
Relative attenuation
arel
fn ± 0,75 MHz .......
fn ± 1,40 MHz ....... fn ± 2,50 MHz
fn ± 2,50 MHz ....... fn ± 30 MHz
Phase linearity in PB
Group delay variation in PB
0,45 dB
1,55 MHz
1,72 MHz
2,55 MHz
45
dB
52
dB
3
°
160
ns
fn
0,65 MHz
0,60 dB
min. 1,30 MHz
min. 1,50 MHz
max. 2,80 MHz
max. 3
dB
min. 40
dB
min. 50
dB
max. 6
°
max. 200
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)
25
°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
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.