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TFS44M Filter specification
型号:   TFS44M
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描述:   Filter specification
文件大小 :   174 K    5 页
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品牌   VECTRON [ Vectron International, Inc ]
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Filename: tfs 44m.doc
Version 1.2
19.04.2005
VI
TELEFILTER
Measurement condition
Filter specification
TFS 44M
1/5
Ambient temperature:
23
°C
Input power level:
0
dBm
Terminating impedances at fc * ) :
Input:
205
|| 0,85 pF
Output:
2000
|| 3 pF and matching network
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 44M is the insertion loss. The insertion loss ae is defined as the insertion loss at the nominal
frequency fN . The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 1 dB filter attenuation level relative to the
insertion loss ae. The temperature coefficient of frequency Tc
f
is valid for both the reference frequency fc and the frequency response of the filter in
operating temperature.
Data
Insertion loss
Nominal frequency
Centre frequency
Passband
Pass band ripple (within 80% of PB)
1 dB Bandwidth
40 dB Bandwidth
Relative attenuation
f
N
±
12
MHz … f
N
Group delay ripple within PB
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
TCf **
±
33
BW
1dB
BW
40dB
arel
MHz
OTR
ae
f
N
f
C
PB
typ. value
14,4
-
44
-
0,4
14,34
20,02
dB
MHz
MHz
MHz
f
C
dB
tolerance / limit
max.
25
44
-
±
7
0,7
14
24
MHz
dB
MHz
MHz
dB
MHz
max.
min.
max.
43
45
-
-
-72
dB
ns
min.
max.
40
60
dB
ns
°C
°C
- 33 °C ... + 55
- 40 °C ... + 85
ppm/K
-
*) The terminating impedances depend on parasites 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
c(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CTA
(MHz)
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 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.
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