TFS549A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 549a.doc
VI TELEFILTER
Version 1.2
Filter specification
TFS 549A
13.07.2004
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
23
°C
0
dBm
for input: 956 Ω || -3,0 pF
for output: 718 Ω || -3,6 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 549A 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 1 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)
Nominal frequency
Passband
Pass band ripple
Relative attenuation
f_N
f_N ±
f_N ±
f_N -
f_N +
4
6,5
548,5
22
MHz ... f_N ±
MHz ... f_N ±
MHz ... f_N ±
MHz ... f_N -
MHz ... f_N +
ae
f_N
within PB
arel
2,5 MHz
6,5
22
22
451,5
MHz
MHz
MHz
MHz
typ. value
13,8 dB
-
-
-
-
0,5 dB
8
dB
44
dB
55
dB
54
dB
tolerance / limit
max.
15
-
549,5
dB
MHz
f_N
max.
± 2,5
0,5
MHz
dB
max.
min.
min.
min.
min.
1 dB
3 dB
39 dB
50 dB
50 dB
Absolute group delay
600
ns
max. 800 ns
Group delay ripple within PB
10
ns
max.
50 ns
Phase linearity (p-p)
at any 2 MHz band width in PB
1,8 deg
max.
2,55 deg
Triple transit response suppression
53
dB
min.
30 dB
VSWR
1,5:1
max.
2:1
Operating temperature range
OTR
-
- 10°C ... + 65°C
Storage temperature range
-
- 25°C ... + 75°C
Turn over temperature
28
°C
-
Temperature coefficient of frequency
TCf **
-0,05 ppm/K²
-
*) 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.
**) ∆f(Hz) = TCf(ppm/K²) x (T-T₀)² x fTo(MHz)
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [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.