TFS246H5 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Filename: tfs246h5.doc
version 1.1
VI TELEFILTER
Filter Specification
Measurement condition
Ambient temperature:
23 °C
Input power level:
0 dBm
Terminating impedances *)
Input:
400 Ohm ║ -2,4 pF
Output:
400 Ohm ║ -2,4 pF
External coil:
82 nH
08.05.2002
TFS 246 H5
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS246H5 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 246 MHz without any 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
(Reference level)
ae = amin
3
dB
max 5
dB
Nominal frequency
fN
Pass band ripple
fN - 85 kHz ... fN + 93 kHz
-
0,5 dB
246,000 MHz
max 1,5 dB
Relative attenuation
arel
fN
fN ± 120
fN ± 330 kHz ... fN ± 400
fN ± 400 kHz ... fN ± 600
fN ± 600 kHz ... fN ± 800
fN ± 800 kHz ... fN ± 1,6
fN ±
1,6 MHz ... fN ± 3,0
fN ±
3,0 MHz ... fN ± 20
fN ± 20 MHz ... fN ± 100
kHz
kHz
kHz
MHz
MHz
MHz
MHz
MHz
1,5 dB
22
dB
33
dB
50
dB
55
dB
55
dB
55
dB
55
dB
max 3
dB
min 18
dB
min 25
dB
min 40
dB
min 45
dB
min 45
dB
min 46
dB
min 45
dB
Group delay distortion GDD
fN ± 50 kHz
fN ± 70 kHz
fN ± 100 kHz
0,5 µs
0,8 µs
1,2 µs
max 1,2 µs
max 1,5 µs
max 2,5 µs
Operating temperature range
-
- 25 °C ... + 85 °C
Storage temperature range
-
- 30 °C ... + 85 °C
Temperature coefficient of frequency TCf **)
- 0,036 ppm/K²
-
Frequency inversion temperature T₀
+ 25
°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)² x fTo(MHz)
Generated:
Checked / approved:
VI TELEFILTER
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D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [e-mail]
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