TFS149 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs149.doc
VI TELEFILTER
Filter specification
Version 1.3
TFS 149
27.02.2003
1/5
1. Measurement condition :
Ambient temperature TA:
Input power level:
23 °C
0 dBm
Terminating impedances in fc * ) : for input:
50
for output:
50
- 20,75 pF.
- 20,75 pF.
(typical value)
(typical value)
2. Characteristics
Remark: Reference level for the relative attenuation arel of the TFS149 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 reference frequency fc is the arithmetic mean value of the upper ( f3dB+ )
and lower (f3dB-) frequencies at the 3 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tcf is
valid both for the reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency shift of the
filter in the operating temperature range is not included in the production tolerance scheme
Data
typ. value
tolerance / limit
Insertion loss (Reference level)
ae
20
dB
max. 23 dB
Centre frequency at ambient temperature
fc
149,05 MHz
149,05 ± 0,1 MHz
Pass band in OTR :
PB
Amplitude ripple in PB (p-p)
0,8 dB
(BW3 – 0,30 ) MHz
max. 1,2 dB
Bandwidth at ambient temperature TA :
BW
1,2 dB
3 dB
3 dB
( BW3 ) in OTR :
20 dB
32 dB
42 dB
22,26 MHz
22,50 MHz
23,24 MHz
23,46 MHz
23,80 MHz
22,50 ± 0,050 MHz
22,50 ± 0,160 MHz
Relative attenuation in OTR :
arel
f3dB- + 0,15 MHz ... f3dB+ - 0,15 MHz
f3dB+ + 0,4 MHz ... f3dB+ + 0,6 MHz
f3dB- - 0,6 MHz ... f3dB- - 0,4 MHz
f3dB+ + 0,6 MHz ... f3dB+ + 1,0 MHz
f3dB- - 1,0 MHz ... f3dB- - 0,6 MHz
f3dB+ + 1
f3dB- - 5
f3dB+ + 5
f3dB- - 25
MHz ... f3dB+ + 5
MHz ... f3dB- - 1
MHz ... f3dB+ + 25
MHz ... f3dB- - 5
MHz
MHz
MHz
MHz
f3dB+ + 25
f3dB- - 35
MHz ... f3dB+ + 35
MHz ... f3dB- - 25
MHz
MHz
f3dB- - 100
f3dB+ + 35
MHz ... f3dB- - 35
MHz ... f3dB+ + 100
MHz
MHz
Group delay (mean value in PB )
Group delay ripple (p-p) in ( BW3 - 0,24 )
Deviation from linear phase in PB
0,8 dB
22
dB
22
dB
42
dB
37
dB
50
dB
50
dB
52
dB
52
dB
48
dB
49
dB
80...55
dB
55...65
dB
2,19 µs
85
ns
( 12° p-p ) / ( 2° r.m.s. )
max.
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
max.
max.
1,2dB
20 dB
20 dB
32 dB
32 dB
42 dB
42 dB
49 dB
49 dB
47 dB
47 dB
52 dB
52 dB
3 µs
150 ns
Input/Output return loss with matching network (S11/S22)
Triple transit attenuation compared to main signal
Crosstalk attenuation compared to main signal
6 / 6 dB
46
dB
65
dB
Temperature coefficient of frequency ( Tcf )
Frequency deviation of fc over temperature
Operating temperature range ( OTR )
Storage temperature range
- 87ppm/K
-94 ppm/K
fc(Hz) = Tcf(ppm/K) x (T - TA) x fCTA (MHz)
- 25 °C ... + 80 °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.
Generated:
Dunzow W.
Checked / approved :
Dr. B.Wall.
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
e-mail: [e-mail]
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