TFS48A Datasheet, PDF (1/5 Pages) Vectron International, Inc – VI TELEFILTER Filter specification

Filename: tfs 48a.doc
VI TELEFILTER
Version 1.2
Filter specification
TFS 48A
19.03.2007
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
95 || -12,2 pF
2000 || 3 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 48A 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 48,0 MHz without any tolerance. The given values for both the relative
attenuation arel and the group delay ripple 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
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
Bandwidth
1 dB
3 dB
35 dB
ae
fN
fC
PB
(p-p)
BW
Relative attenuation
fN
fC ±
fC ±
fC ±
fC +
5,5
7,75
10,0
15,0
… fN ±
MHz … fC ±
MHz … fC ±
MHz … fC ±
MHz … fC +
4,25
7,75
10,0
15,0
25,0
arel
MHz
MHz
MHz
MHz
MHz
Group delay variation at PB
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
OTR
TCf **
typ. value
13,5
-
48,0 MHz
-
0,5 dB
9,3 MHz
9,9 MHz
11,6 MHz
0,5
12
39
44
46
40
-
-
-72
dB
dB
dB
dB
dB
ns
ppm/K
tolerance / limit
max.
15,0 dB
fN
max.
48,0 MHz
± 50
kHz
± 4,25 MHz
1,0 dB
min.
min.
max.
8,5 MHz
9,2 MHz
15,5 MHz
max.
min.
min.
min.
min.
1 dB
10 dB
35 dB
40 dB
40 dB
max. 100 ns
- 40 °C ... + 85 °C
- 40 °C ... + 85 °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.
**) ∆fc(Hz) = Tcf(ppm/K) x (T - TA) x fCAT (MHz)
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail:
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.