TFS451A Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – Filter specification

Filename: tfs 451a.doc
VI TELEFILTER
Version 1.4
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Source impedance
Load impedance
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
75
Ω
75
Ω
205 Ω || -2,5 pF
205 Ω || -2,5 pF
TFS 451A
10.08.2005
1/5
Characteristics
Remark:
The minimum attenuation in the pass band is defined as the insertion loss ae. The nominal frequency f_N is fixed at 451,25 MHz without any tolerance or
limit. The values of absolute attenuation aabs are guaranteed for the whole operating temperature range. The frequency shift of the filter in the operating
temperature range is included in the production tolerance scheme.
Data
Insertion loss
ae
Nominal frequency
f_N
Pass band
PB
Amplitude ripple
p-p
Absolute attenuation
f_N -
f_N -
f_N +
f_N +
441,0 MHz ... f_N -
4,25 MHz ... f_N -
1,75 MHz ... f_N +
4,75 MHz ... f_N +
aabs
4,25 MHz
1,25 MHz
4,75 MHz
548,0 MHz
Operating temperature range
Storage temperature range
OTR
Frequency inversion temperature
Temperature coefficient of frequency
TCf **
typ. value
1,8 dB
-
-
-
0,3 dB
49
dB
40
dB
41
dB
42
dB
-
-
28
C°
-0,034 ppm/K²
tolerance / limit
max.
3 dB
f_N
max.
451,25 MHz
±45,5 kHz
1 dB
min.
40 dB
min.
35 dB
min.
20 dB
min.
40 dB
-20°C ... + 70 °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) = Tc_f(ppm/K²) x (T - T_o)² x f_CAT (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.