TFS254C Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 254c.doc
Vectron International
Version 1.4
Filter specification
TFS 254C
28.10.2008
1/5
Measurement condition
Ambient temperature:
Input power level:
source impedance:
load impedance:
23
0
200 Ω
150 Ω
°C
dBm
Terminating impedance: *
Input:
Output:
146 Ω || -11.8 pF
87 Ω || -15.7 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 254C is the minimum of the pass band attenuation. This value is defined as the insertion
loss ae. The nominal frequency fN is fixed at 254,6 MHz without any tolerance. The values of relative attenuation arel 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
typ. value
tolerance / limit
Insertion loss
ae
(reference level)
Nominal frequency
f_N
Passband
PB
Pass band ripple
p-p
Amlitude ripple wihin any 1MHz PB segment
Relative attenuation
arel
f_N
f_N -
f-
N
f_N -
f±
N
f_N ±
f+
N
f_N +
f+
N
f_N +
253,6
94,0
82,2
16,0
20,0
48,7
64,8
75,0
86,8
… f_N ±
MHz … f_N -
MHz … f_N -
MHz … f_N -
MHz … f ±
N
MHz … f_N ±
MHz … f +
N
MHz … f_N +
MHz … f +
N
MHz … f_N +
11,0
94,0
82,2
48,7
20,0
50,0
64,8
75,0
86,8
500,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Group delay ripple within PB
Group delay ripple within any 1MHz PB segment
Absolute group delay within PB
IIP3
**
Input power level
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
OTR
TCf ***
8,5 dB
25,8 MHz
0,2 dB
0,2 dB
0,7 dB
68
dB
66
dB
51
dB
6
dB
37
dB
47
dB
53
dB
58
dB
65
dB
26
ns
15
ns
435
ns
-84
ppm/K
max.
9,0 dB
f_N ±
max.
max.
254,6
11,0
1,0
0,3
MHz
MHz
dB
dB
max.
min.
min.
min.
min.
min.
min.
min.
min.
min.
max.
max.
1 dB
45 dB
62 dB
40 dB
3 dB
25 dB
40 dB
45 dB
43 dB
25 dB
50 ns
30 ns
max. 450 ns
min.
36 dB
max.
18 dBm
- 35 °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.
**) f_in1= 246.6MHz; f_in2= 250.6MHz; P_in=0dBm, f_measurement = 254.6MHz.
***) ∆f(Hz) = TCf(ppm/K) x (T-T₀) x fcat(MHz).
Generated:
Checked / Approved:
Vectron International GmbH & Co. KG
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International GmbH & Co. KG 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.