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Tfs282a.doc
version 1.5
12.02.2001
VI TELEFILTER
Filter Specification
TFS 282 A
1/5
VI TELEFILTER
Vectron International, Inc.
Potsdamer Strae 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: tft@telefilter.com
E-Mail: vti@vtinh.com
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.
Measurement condition
Ambient temperature:
23
°C
Input power level:
0 dBm
Terminating impedances
for input:
420
// - 1,3 pF
for output: 420
// - 1,3 pF
External coil:
89 nH
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 282 A 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 on 282 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 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.
D a t a
typ. value
tolerance/limit
_________________________________________________________________________________________________________
Insertion loss
ae = amin
3,7
dB
max
5
dB
(Reference level)
_________________________________________________________________________________________________________
Nominal frequency
fN
-
282,000 MHz
_________________________________________________________________________________________________________
Pass band ripple
282,0 MHz ± 65
kHz
-
max
1,5
dB
_________________________________________________________________________________________________________
Relative attenuation
arel
282,0 MHz ± 90
kHz
1,5
dB
max
3
dB
282,0 MHz ± 400
kHz ... 282,0 MHz ± 600
kHz
30
dB
min
25
dB
282,0 MHz ± 600
kHz ... 282,0 MHz ± 800
MHz
45
dB
min
40
dB
282,0 MHz + 800
kHz ... 282,0 MHz +
1,4 MHz
60
dB
min
50
dB
282,0 MHz +
1,4 kHz ... 282,0 MHz +
3,0 MHz
55
dB
min
45
dB
282,0 MHz +
3,0 MHz ... 282,0 MHz + 30,0 MHz
60
dB
min
50
dB
282,0 MHz - 800
kHz ... 282,0 MHz - 30,0 MHz
60
dB
min
50
dB
_________________________________________________________________________________________________________
Group delay distortion
GDD
282,0 MHz ± 100
kHz
0,7
s
max
2,0
s
_________________________________________________________________________________________________________
Input power
max
0
dBm
DC voltage
max
5
V
_________________________________________________________________________________________________________
Operating temperature range
- 20
°C ... + 70 °C
Storage temperature range
- 30
°C ... + 85 °C
Temperature coefficient of frequency
TCf
- 0,036 ppm/K
-
Frequency inversion temperature
+ 25
°C
_________________________________________________________________________________________________________
Generated:
Checked / approved: