TFS281A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: TFS281A.doc
Vectron International
Version 2.0
Filter specification
TFS 281A
16.05.2011
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
Characteristics
23
°C
0
dBm
510 Ω || -7,86 pF
530 Ω || -7,38 pF
Remark:
The nominal frequency fN is fixed at 281,6 MHz. The insertion loss ae is defined as loss value determined at fN. Reference level for the relative attenuation
arel of the TFS 281A is 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. All specified data are met within the operating temperature range.
Data
typ. value
tolerance / limit
Insertion loss***
(reference level)
ae
8,3
dB
max.
11 dB
Nominal frequency
Centre frequency
f_N
-
f_C
281,6
MHz
281,6 MHz
-
Passband
Amplitude ripple within PB
PB
-
f_N ±
1,0 MHz
0,5
dB
max.
1 dB
Relative attenuation
f_N
f_N ±
f_N -
f_N -
f_N +
3,0
261,6
7,5
5,0
… f_N ±
MHz … f_N ±
MHz … f_N -
MHz … f_N -
MHz … f_N +
Group delay ripple within PB
Return loss within PB
Input power level
arel
1,0 MHz
5,0 MHz
7,5 MHz
5,0 MHz
20,0 MHz
p-p
0,5
dB
37
dB
47
dB
44
dB
45
dB
20
ns
14
dB
-
max.
min.
min.
min.
min.
max.
min.
max.
1 dB
30 dB
40 dB
38 dB
40 dB
75 ns
10 dB
15 dBm
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
OTR
TCf **
-
-
-
-0,04
ppm/K²
- 40 °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/K²) x (T-T₀)² x fcat(MHz).
***) Design target is to improve insertion loss to as near to 8dB as possible.
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.