TFS456F Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 456f.doc
VI TELEFILTER
Version 1.6
Filter specification
Measurement condition
Ambient temperature:
23 °C
Input power level:
0 dBm
Terminating impedance: *
Input:
248 Ω || - 5,3 pF
Output:
220 Ω || - 6,2 pF
TFS 456F
01.09.2005
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 456F 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 f_C is the arithmetic mean value of the upper and lower frequencies at the 1dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 456,0 MHz without tolerance. The given values for the relative
attenuation arel and for the group delay ripple have to be reached at the frequencies given below even if the centre frequency f_C 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 f_C.
Data
typ. value
tolerance / limit
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
1dB bandwidth
ae = amin
f_N
f_C
PB
12
dB
-
456
13,7
0,5
13,7
13,7
MHz
MHz
dB
MHz
MHz
max.
13,0 dB
456,0 MHz
min.
max.
min.
max.
f ± 6,3
N
1,0
12,6
14,6
MHz
dB
MHz
MHz
Relative attenuation
f - 455
N
f - 200
N
f - 104
N
f_N -
47
f_N + 14
f_N + 200
MHz … f - 200
N
MHz … f - 104
N
MHz … f - 47
N
MHz … f_N -
14
MHz … f_N + 200
MHz … f_N + 400
Return loss within PB
arel
MHz
MHz
MHz
MHz
MHz
MHz
55
dB
60
dB
51
dB
43
dB
42
dB
70
dB
15
dB
min.
30 dB
min.
40 dB
min.
50 dB
min.
40 dB
min.
40 dB
min.
30 dB
min.
10 dB
Group delay ripple within PB
40
ns
max. 200 ns
Operating temperature range
OTR
-
- 40 °C ... + 85°C
Storage temperature range
-
- 45 °C ... + 85°C
Frequency inversion temperature
-
Temperature coefficient of frequency
TCf **
-18
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) = TC_f(ppm/K) x (T - T_o) x f_To (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.