TFS70H23 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name : Tfs70H23.doc
VI TELEFILTER
Filter specification
Version 1.1
TFS 70H23
26.06.2002
1/5
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances at fc * ) :
Source impedance:
Load impedance:
23 °C
0 dBm.
for input:
for output:
50 Ω
50 Ω
217 Ω  - 17,77 pF.
343 Ω  - 14,66 pF.
2. Characteristics :
Remark: Reference level for the relative attenuation arel of the TFS 70H23 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
typical values
tolerance / limit
Insertion loss (Reference level)
ae
18
dB
max. 23
dB
Centre frequency fc at ambient temperature T_A (f_CAT)
70,01 MHz
70 ± 0,07
MHz
Pass band at ambient temperature T_A :
PB
f_C - 0,365 MHz ... f_C + 0,375 MHz
Amplitude ripple (p-p) in : f_C ... f_C ± 0,2 MHz
Bandwidth
0,5 dB
1 dB
3 dB
at ambient temperature:
10 dB
20 dB
40 dB
50 dB
60 dB
0,25 dB
0,52 MHz
0,65 MHz
0,87 MHz
1,22 MHz
1,47 MHz
1,78 MHz
1,88 MHz
2,00 MHz
-
min.
min.
max.
-
0,58 MHz
0,75 MHz
-
-
2,00 MHz
-
-
Relative attenuation
arel
f_C
... ^fC ^{± 0,29 MHz}
f_C ± 0,29 MHz ... f_C ± 0,375 MHz
f_C ± 1
f_C ± 2
f_C - 65
f_C + 7
MHz ... f_C ± 2
MHz ... f_C ± 7
MHz ... f_C - 7
MHz ... f_C + 35
MHz
MHz
MHz
MHz
Group delay ( mean value in PB ) :
Group delay ripple in PB (p-p) :
Phase ripple in PB (p-p) :
0,7 dB
1,8 dB
50
dB
47...50
dB
70
dB
55...65
dB
3,46 µs
120
ns
1,1...1,3° ( r.m.s. 0,6° )
max. 1
dB
max. 3
dB
min. 40
dB
min. 45
dB
min. 50
dB
min. 50
dB
max. 4
µs
max. 250
ns
max. 4
deg
Triple transit attenuation compared to main signal
45
dB
-
Crosstalk
60
dB
-
Frequency inversion temperature :
T_o
Temperature coefficient of frequency :
Tc_f
Frequency deviation of fc over temperature : ** )
Operating temperature range
Storage temperature range
20...40
°C
-
-0,04 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 frequency at frequency inversion temperature (T_o )
Generated:
Checked/Approved:
Dunzow W.
Dr. Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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