TFS35F_08 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 35f.doc
Vectron International
Version 1.2
Filter specification
TFS 35F
15.09.2008
1/5
T Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
25
°C
0
dBm
310 Ω || -25,7 pF
690 Ω || -10,1 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 35F 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 35,42 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
typ. value
tolerance / limit
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
ae
14,8 dB
f_N
f_C
35,42 MHz
PB
-
0,6 dB
max.
max.
17 dB
35,42 MHz
-
f_C ± 0,80 MHz
1,6 dB
Bandwidth
1 dB
3 dB
21 dB
Relative attenuation
34,62 MHz
…
0,1 MHz
…
7
MHz
…
28
MHz
…
31
MHz
…
37,34 MHz
…
39,84 MHz
…
62,42 MHz
…
72,42 MHz
…
Group delay
BW
arel
36,22
7
28
31
33,5
39,84
62,42
72,42
110,42
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
mean value in PB
2,01 MHz
2,44 MHz
3,32 MHz
0,8 dB
55…27 dB
55…50 dB
35 dB
40…30 dB
27…42 dB
45…60 dB
36 dB
70…80 dB
1,6 µs
min.
max.
max.
min.
min.
min.
min.
min.
min.
min
max.
1,7 MHz
-
3,74 MHz
1,6 dB
-
35 dB
30 dB
21 dB
21 dB
35 dB
30 dB
40 dB
1,7 µs
Group delay ripple within PB
200
ns
max. 300 ns
Deviation from linear phase within PB
±2
°
-
Triple transit response suppression
35
dB
-
Crosstalk attenuation compared to main signal
50
dB
-
Operating temperature range
OTR
-
- 20 °C ... + 80°C
Storage temperature range
-
- 40 °C ... + 85°C
Temperature coefficient of frequency
TCf **
-20
ppm/K
-
*) 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:
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.