TFS249B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 249b.doc
Vectron International
Version 3.1
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
73 Ω || -13 pF
122 Ω || -9.5 pF
TFS 249B
15.12.2010
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 249B is the minimum of the pass band attenuation. This value is defined as the insertion
loss ae. The nominal frequency fN is fixed at 249,5 MHz without any tolerance. The values of relative attenuation arel 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 1
Passband 2
Pass band ripple PB1 and PB2 p-p
Relative attenuation
f_N -
f-
N
f-
N
f_N +
f_N +
f_N +
150
90
62
54,5
62
90
MHz … f_N -
MHz … f -
N
MHz … f -
N
MHz … f_N +
MHz … f_N +
MHz … f_N +
90
62
54,5
62
90
140
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
ae
f_N
PB 1
PB 2
arel
MHz
MHz
MHz
MHz
MHz
MHz
OTR
TCf **
typ. value
14,6 dB
15,9 MHz
21,9 MHz
0,4 dB
54
dB
50
dB
48
dB
36
dB
40
dB
46
dB
-
-
-90
ppm/K
tolerance / limit
max.
20 dB
249,5 MHz
205 MHz … 216 MHz
276 MHz … 294 MHz
max.
1 dB
min.
40 dB
min.
35 dB
min.
30 dB
min.
30 dB
min.
35 dB
min.
40 dB
- 33 °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 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.