TFS70H26 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

tfs70H26.doc
VI TELEFILTER
Filter specification
Version 1.1
TFS 70H26
22.07.2002
1/5
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances in fc * ) :
25 °C.
0 dBm.
for input:
for output:
610 Ω  - 8,08 pF.
510 Ω  - 9,54 pF.
2. Characteristics :
Remark:
Reference level for the relative attenuation arel of the TFS 70H26 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 3 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tc_f is valid both for the
reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency shift of the filter in the
operating temperature range is not included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss (Reference level) ae
Centre frequency fc at ambient temperature (f_CTA)
23 dB
70,0 MHz
max. 26 dB
70,0 ± 0,08 MHz
Pass band :
PB
Amplitude ripple in : fc – 0,8 MHz ... fc + 0,8 MHz
Bandwidth ( BW ) :
1 dB
3 dB
at ambient temperature T_A
10 dB
20 dB
40 dB
45 dB
0,2 dB
1,90 MHz
2,31 MHz
2,78 MHz
3,13 MHz
3,60 MHz
3,75 MHz
fc ... fc ± 1 MHz
max. 0,7 dB
min. 1,8 MHz
min. 2,0 MHz
max. 3,8 MHz
Relative attenuation
arel
fc ..... fc ± 0,8 MHz
fc ± 0,8 MHz ..... fc ± 0,9 MHz
fc ± 0,9 MHz ..... fc ± 1,0 MHz
fc ± 1,9 MHz ..... fc ± 7 MHz
fc ± 7 MHz ..... fc ± 30 MHz
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p) :
Deviation from linear phase in PB (p-p) :
-
-
-
49 dB
55 dB
2,85 µs
45 ns
2,2 ° ( r.m.s. 0,6° )
max.
max.
max.
0,7 dB
1 dB
3 dB
min. 40 dB
min. 45 dB
max. 90 ns
max. 4 °
Triple transit attenuation compared to main signal
Crosstalk
56 dB
50 dB
Frequency inversion temperature ( T_o ) :
Temperature coefficient of frequency ( Tc_f ) :
Frequency deviation of fc over temperature: ** )
Operating temperature range
Storage temperature range
30°C...35°C
- 0,036 ppm/K²
∆fc(Hz) = Tc_f(ppm/K) x (T - T_o)² x f_To (MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 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.
**) f_To is reference frequence fc at frequency inversion temperature (T_o )
Generated:
Checked / approved:
Chilla
Dr. Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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