
Tfs430b.doc
VI
TELEFILTER
version 1.2
26.11.2002
Filter Specification
TFS 430B
1/5
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.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 T
A
:
Input power level:
Terminating Impedance at fc*:
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 430B 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 430 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.
D a t a
23 °C
0
for input:
for output:
dBm.
240
6,7 pF
210
7,7 pF
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae = amin
9,2
dB
max. 10
dB
Nominal frequency
fN
fc
-
430
MHz
Centre frequency
430
MHz
Relative attenuation
arel
2
3,325 MHz
fN
fN ± 2
fN ± 9
fN ± 50
…fN ±
MHz …fN ±
MHz …fN ± 50
MHz …fN ± 100
MHz
-
-
max.
max.
1
1,5
dB
dB
MHz
MHz
37
45
dB
dB
min.
min.
30
40
dB
dB
Phase Linearity
fN ±
2
MHz
0,7
°rms
max.
3
°rms
Operating temperature range
-
- 30
°
C ... + 70
°
C
Storage temperature range
-
- 35
°
C … + 85
°
C
Temperature coefficient of frequency
TC
- 19
ppm/K
Frequency inversion temperature
+ 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.
generated:
checked / approved: