TFS172A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 172a.doc
VI TELEFILTER
Version 1.2
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
661 Ω || -10.0 pF
663 Ω || -10.2 pF
TFS 172A
30.04.2004
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 172 A 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 1,5 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 172,800 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
10.5
dB
172,8 MHz
max. 12,5
dB
172,8 MHz
-
Passband
PB
Passband ripple
0.8
dB
fN ±
max.
4,42 MHz
1,5 dB
Relative attenuation
fN
... ^{fN ±}
arel
4,42 MHz
fN ± 8 MHz ... fN ± 11 MHz
fN ± 11 MHz ... fN ± 25 MHz
fN ± 25 MHz ... fN ± 36,8 MHz
fN ± 36,8 MHz ... fN ± 100 MHz
1
dB
30
dB
40
dB
55
dB
65
dB
max. 1,5 dB
min. 27 dB
min. 35 dB
min. 45 dB
min. 55 dB
Group delay ripple within PB
90 ns
max. 200 ns
Temperature coefficient of frequency Tc_f
Frequency deviation of fc over temperature T:
- 18 ppm/K²
-
∆fc(Hz) = Tc_f(ppm/K) x (T - T_A) x f_CAT (MHz)
Operating temperature range
- 10 °C .. + 85 °C
Storage temperature range
- 40 °C .. + 125 °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:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
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.