TFS248M Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 248m.doc
Vectron International
Measurement condition
Ambient temperature:
23
Input power level:
0
Terminating impedance: *
Input:
200
Output:
169
Source impedance:
200
Load impedance:
800
Version 1.1
Filter specification
°C
dBm
Ω
Ω || -0,43 pF
Ω
Ω
TFS 248M
23.10.2008
1/5
Characteristics
Remark:
The maximum attenuation in the pass band is defined as the insertion loss ae. The nominal frequency f_N is fixed at 248,6 MHz without any tolerance or
limit. The values of absolute attenuation aabs are guaranteed for the whole operating temperature range. The frequency shift of the filter in the operating
temperature range is included in the production tolerance scheme.
Data
Insertion loss
(reference level)
Nominal frequency
Passband
Pass band ripple
Absolute attenuation
0,3 MHz … 220,6
270,6 MHz … 500,0
MHz
MHz
Group delay ripple within PB
Group delay within PB
Return loss
Input power level
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
ae
f_N
PB
aabs
OTR
TCf **
typ. value
1,4 dB
-
-
0,22 dB
30
dB
27
dB
8
ns
65
ns
14
dB
-
-
-
-38
ppm/K
tolerance / limit
max.
1,7 dB
248,6
f
± 0,5
N
max.
0,5
MHz
MHz
dB
min.
20 dB
min.
20 dB
max.
80 ns
max. 100 ns
min.
10 dB
max.
10 dBm
- 20 °C ... + 85°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 fcat(MHz).
Generated:
Checked / Approved:
Vectron International GmbH & Co. KG
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International GmbH & Co. KG 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.