TFS243A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 243a.doc
Vectron International
Version 2.1
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
External Coil:
23
°C
0
dBm
400 Ω || -3,1 pF
400 Ω || -3,1 pF
116 nH
TFS 243A
29.04.2011
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS243A 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 243 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
tolerance / limit
Insertion loss
ae
(Reference level)
3,2 dB
max. 5
dB
Nominal frequency
fN
Centre frequency
fc
Relative attenuation
arel
f_N
...
fN ± 25 kHz
f_N ±
f_N ±
f_N ±
f_N -
f_N +
f_N +
425
625
825
1,6
1,6
15
kHz ... fN ±
kHz ... fN ±
kHz ... fN ±
MHz ... fN -
MHz ... fN +
MHz fN +
625
825
1,6
25
15
25
kHz
kHz
MHz
MHz
MHz
MHz
Temperature coefficient of frequency
Frequency inversion temperature
Operating temperature range
Storage temperature range
TCf **)
To
-
243,02 MHz
-
30
dB
40
dB
50
dB
57
dB
58
dB
55
dB
- 0,036 ppm/K²
+ 25
°C
-
-
243
MHz
-
max. 3
dB
min. 25
dB
min. 36
dB
min. 36
dB
min. 50
dB
min. 45
dB
min. 50
dB
-
-
- 40 °C + 85 °C
- 54 °C + 100 °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)² x fTo(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.