TFS75B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 75b.doc
VI TELEFILTER
Version 1.2
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
1430 Ω || -6.3 pF
224 Ω || -6.8 pF
TFS 75B
26.01.2005
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 75B 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 40 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 75 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved 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
Insertion loss
typ. value
11,3 dB
tolerance/limit
max. 13,0 dB
Nominal frequency
fN
75,0 MHz
1 dB Pass band
PB
5,5 MHz
fN± 2,1 MHz
Amplitude ripple in PB
p-p
0,3 dB
max. 1,0 dB
Relative attenuation
arel
fN - 15 MHz ....... fN - 7,15
fN + 7,15 MHz ....... fN + 15,0
fN + 15 MHz ....... fN + 65,0
Group delay ripple within PB p-p
MHz
MHz
MHz
43
dB
40
dB
45
dB
75 ns
min. 40
dB
min. 36
dB
min. 40
dB
max. 200
ns
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
Input power level
TC_f**
-
-
- 87
ppm/K
-
- 40 °C ... + 85 °C
- 40 °C ... + 85 °C
-
max. 10 dBm
*) 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) =TC_f(ppm/K) x(T-T₀) x f_To (MHz)
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.