TFS248C1_06 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 248c1.doc
VI TELEFILTER
Version 1.6
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
Source:
Load:
23
°C
0
dBm
63 Ω || -1,7 pF
63 Ω || -1,7 pF
50 Ω
200 Ω
TFS 248C1
25.07.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 248C1 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 3 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 248,6 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
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
Bandwidth
3 dB
Relative attenuation
f_N -
f_N +
f_N +
@ f_N
@ f_N
@ f_N
@ f_N
@ f_N
248,5
10
21
+ 22,8
+ 52,0
+ 74,8
+ 104,0
+ 126,8
MHz ... f_N -
MHz … f_N +
MHz … f_N +
MHz
MHz
MHz
MHz
MHz
12
21
251,4
Group delay
Group delay ripple within PB
Input power level
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
ae
f_N
f_C
PB
BW
arel
MHz
MHz
MHz
OTR
TCf **
typ. value
3,0 dB
-
248,6
MHz
0,1 dB
6,6 MHz
57
dB
19
dB
67
dB
56
dB
56
dB
56
dB
56
dB
56
dB
150
ns
20
ns
-
-
-
- 36
ppm/K
tolerance / limit
max.
3,5 dB
f_N ±
max.
248,6
-
120
0,5
MHz
kHz
dB
min.
5,0 MHz
min.
25 dB
min.
10 dB
min.
25 dB
min.
50 dB
min.
50 dB
min.
50 dB
min.
50 dB
min.
50 dB
max. 300 ns
max. 100 ns
max.
20 dBm
- 25 °C ... + 75 °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(Hz) = TCf(ppm/K) x (T-T₀) x fTo(MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.