TFS426 Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter specfication

tfs426.doc
version 1.1
04/99
_____________________________________________________________________________________________________
VI TELEFILTER
Filter specfication
TFS 426 - 1/4
__________________________________________________________________________________________
Measurement condition
Ambient temperature:
23 °C
Input power level:
0 dBm
Terminating impedances
for input: 80 Ω || -2.5 pF.
for output: 80 Ω || -2.5 pF
External coil:
72 nH
Construction
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 426 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 fo 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 on 426,4 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 also if the centre frequency fo 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 fo.
Data
typ. Value
Tolerance / Limit
_____________________________________________________________________________________________________
Nominal Frequency
fN
-
426,4 MHz
_____________________________________________________________________________________________________
Insertion Loss
ae (reference level)
-
max. 5,5 dB
_____________________________________________________________________________________________________
Pass Band Ripple
fN ± 67,5 kHz
-
max. 1,5 dB
_____________________________________________________________________________________________________
Relative Attenuation
arel
fN ± 80 kHz
fN ± 400 kHz ... fN ± 600 kHz
fN ± 600 kHz ... fN ± 800 kHz
fN ± 800 kHz ... fN ± 1600 kHz
fN ± 1600 kHz ... fN ± 3000 kHz
fN ± 3 MHz ... fN ± 100 MHz
-
max. 3 dB
-
min. 15
dB
-
min. 30
dB
-
min. 38
dB
-
min. 42
dB
-
min. 50
dB
2 x fN
-
min. 50
dB
_____________________________________________________________________________________________________
Group Delay Deviation
GDD
fN ± 50 kHz
-
max. 1,2 µs
fN ± 70 kHz
-
max. 1,5 µs
fN ± 100 kHz
-
max. 2,0 µs
_____________________________________________________________________________________________________
Operating Temperature Range
- 10 °C ... + 70 °C
_____________________________________________________________________________________________________
Temperature Coefficient of Frequency TCf
Frequency Inversion Temperature
To
- 0,036 ppm/K²
-
30
°C
-
_____________________________________________________________________________________________________
Generated:
Checked / approved:
_____________________________________________________________________________________________________
VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: [phone] / Fax: [phone]
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
E-Mail: [e-mail]
VI TELEFILTER 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.