TFS208H Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs208h.doc
VI TELEFILTER
Filter Specification
version 1.3
TFS 208 H
05.02.2003
1/5
Measurement Condition
Ambient temperature:
23 C
Input power level:
0 dBm
Source impedance:
200 balanced
Load impedance:
50 single ended
Terminating impedances: *) input:
410 // -10,3 pF
output: 264 // -12,7 pF
Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 208H is the attenuation at 208 MHz. Reference for the echo response
attenuation is the main time response lobe, the reference time is defined as t0. The nominal frequency fN is fixed at 208 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
Absolute attenuation within fN 0,1 MHz
Nominal frequency fN
7 dB
-
6 ... 8,5 dB
208 MHz
Pass band ripple
fN .....
fN
fN 0,1 MHz ... fN
fN 0,2 MHz ... fN
1 dB-bandwidth
0,1 MHz
0,2 MHz
0,5 MHz
0,05 dB
0,1 dB
0,6 dB
1180 kHz
max.
max.
max.
0,25 dB
0,5 dB
1 dB
min. 1000 kHz
Relative attenuation
arel
fN
... fN 0,5 MHz
fN 1,2 MHz ... fN 1,8 MHz
fN 1,8 MHz ... fN 6 MHz
fN 6 MHz ... fN 13 MHz
fN - 13 MHz ... fN - 198 MHz
fN + 13 MHz ... fN + 242 MHz
Echo response attenuation arel
t0 + 1 µs
t0 + 2 µs
t0 + 3 µs
t0 + 4 µs
t0 + 5 µs
Group delay
at fN
Group delay ripple within fN 0,5 MHz
-
15 dB
28 dB
50 dB
65 dB
65 dB
35 dB
45 dB
55 dB
70 dB
80 dB
525 ns
100 ns
max. 1 dB
min. 9 dB
min. 25 dB
min. 35 dB
min. 50 dB
min. 50 dB
min. 20 dB
min. 30 dB
min. 40 dB
min. 40 dB
min. 50 dB
max. 750 ns
max. 150 ns
Input power level
-
max. + 10 dBm
VSWR
within fN 0,5 MHz
18 dB
max. 2:1
IP3 **)
65 dBm
min. 60 dBm
Operating temperature range
-
- 10 °C ... + 85 °C
Storage temperature range
-
- 40 °C ... + 125 °C
Temperature coefficient of frequency
TCf ***
-0,036 ppm/K²
-
Frequency inversion temperature
T0
15
°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.
**) fin,1=208MHz; fin,2=208,1MHz; Pin=4dBm+loss @fN; fout,1=207,9MHz; fout,2=208,2MHz; then Pout <-56dBm
***) f(Hz) = TCf(ppm/K²) x (T-T0)² x fTo(MHz)
generated:
checked / approved:
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