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Tele Filter GmbH

TFS77A Datasheet Preview

TFS77A Datasheet

VI TELEFILTER

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Filename: tfs 77a.doc
VI TELEFILTER
Version 1.1
Filter specification
TFS 77A
22.11.2004
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
25 °C
0 dBm
910 || -22.8 pF
760 || -24.0 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 77A 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 1 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 77,55 MHz without any tolerance. The given values for the
relative attenuation arel have to be achieved 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
typ. value
tolerance / limit
Insertion loss
(reference level)
ae 7,7 dB
-
max.
10,0 dB
Nominal frequency
fN -
77,55 MHz
Centre frequency
Passband
fC 77,55 MHz
PB -
-
fC ± 12,5 kHz
Amplitude ripple in PB
p-p 0,4 dB
max.
1 dB
Relative attenuation
fN -
fN +
50
25
MHz ... fN -
MHz ... fN +
Absolute group delay in PB
25
50
arel
MHz
MHz
70 dB
52 dB
615 ns
min.
min.
max.
50 dB
50 dB
0,8 µs
Group delay ripple in PB
p-p 12 ns
max.
20 ns
Operating temperature range
OTR
-
-25 °C ... + 55 °C
Storage temperature range
- -35 °C ... + 85 °C
Temperature coefficient of frequency
TCf **
-22 ppm/K
-
*) 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.
**) fc(Hz) = TCf(ppm/K) x (T - To) 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
www.DaastsauSmhedeaest4a Ures.unlteotf their use or application. No rights under any patent accompany the sale of any such product(s) or information.




Tele Filter GmbH

TFS77A Datasheet Preview

TFS77A Datasheet

VI TELEFILTER

No Preview Available !

Filename: tfs 77a.doc
VI TELEFILTER
Version 1.1
Filter specification
TFS 77A
22.11.2004
2/5
Filter characteristic
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10208.6 38.4 48.2 58
67.8 77.6 87.4 97.2 107 116.8 126.6
frequency in MHz
0 0.89
-1 0.86
-2 0.83
-3 0.8
-4 0.77
-5 0.74
-6 0.71
-7 0.68
-8 0.65
-9 0.62
-1705.6 76 76.4 76.8 77.2 77.6 78 78.4 78.8 79.2 790.6.59
frequency in MHz
Construction and pin connection
(All dimensions in mm)
S 77A
S48
13
7,2 Max.
2,54 ±0,2
1
Date code
0,80
1 Input
2 Input RF Return
3 Ground
4 Ground
5 Ground
6 Ground
7 Output
8 Output RF Return
9 Ground
10 Ground
11 Ground
12 Ground
Date code:
S
T
U
...
Year + week
2004
2005
2006
50 Ohm Test circuit
L1
C1
17
2 SAW 8
3, 4, 5, 6, 9, 10, 11, 12
L2
C2
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.


Part Number TFS77A
Description VI TELEFILTER
Maker Tele Filter GmbH
Total Page 5 Pages
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