Filename: tfs 75f.doc
Version 1.1
26.04.2005
VI
TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
0
°C
dBm
Filter specification
TFS 75F
1/5
50
Ω
|| 0 pF
50
Ω
|| 0 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 75F is the minimum of the pass band attenuation amin. This value is defined as the insertion loss
ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 20 dB filter attenuation level relative to the insertion loss
ae. The given values for the relative attenuation arel and 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
Insertion loss
(reference level)
Centre frequency at temperature 70°C
Centre frequency at ambient temperature
1 (TFS65 at 23°C )
2 (TFS87E at 23°C )
Passband
Pass band ripple (p-p)
Bandwidth
1
3
40
f
C
f
C
dB
dB
dB
arel
±
±
2,8
3,0
MHz
MHz
... f
C
MHz ... f
C
PB
nd
st
typ. value
ae
f
COT
f
C
65,9 ±0,1 MHz
87,1 ±0,1 MHz
22,8
75,3
75,6
9,4
11,8
-
0,7
dB
dB
MHz
MHz
MHz
MHz
max.
max.
± 20
± 20
kHz
kHz
MHz
dB
max.
75,3
26,0
± 0,10
dB
MHz
Relative frequency distance of f
C
within one set of 3 filters at 70 °C
f
C
… f
C
± 2,8
max.
1
5,98
6,11
6,55
0,7
1,5
MHz
MHz
MHz
dB
dB
min.
min.
max.
max.
max.
min.
min.
min.
min.
max.
max.
5,6
6,0
6,6
1
3
40
45
50
50
5
300
MHz
MHz
MHz
dB
dB
dB
dB
dB
dB
µs
ns
°C
°C
Relative attenuation
±
2,8
3,3
MHz
48
dB
f
C
±
in the frequency range f
C
± 3,3 MHz … f
C
± 20 MHz the limit line is of type SLOPING LINE
f
C
±
20
MHz
55
dB
in the frequency range f
C
± 20 MHz … f
C
± 25 MHz the limit line is of type SLOPING LINE
25
MHz
60
dB
f
C
±
25
MHz ... f
C
±
50
MHz
60
dB
f
C
±
Group delay
Group delay ripple (p-p) in f
C
… f
C
+ 3 MHz
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
OTR
TCf **)
mean value in PB
4,75
160
-
-
-84
µs
ns
ppm/K
- 25 °C ... + 80
- 40 °C ... + 85
-
*) 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(Hz)
= TCf(ppm/K) x (T-T
0
) x fTo(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.
VECTRON [ Vectron International, Inc ]
