TFS149B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs149B.doc
VI TELEFILTER
version 1.0
Filter specification
Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc * ) :
23 °C
0 dBm.
for input:
for output:
24 Ω // -13,2 pF
41 Ω // - 0,8 pF
TFS 149B
27.05.2004
1/5
Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 149B 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 and lower frequencies at the
33 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tc_f is valid both for the reference frequency fc and the
frequency response of the filter in the operating temperature range. The bandwidth shift of the filter in the operating temperature range is included in the
production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss (reference level)
ae = amin
Centre frequency at ambient temperature T_A fc
25,5 dB
149,9 MHz
max. 26
dB
149,9 ± 0,1 MHz
Pass band
PB
Pass band ripple ( p–p ) :
Bandwidth within operating temperature range
1,5 dB
3 dB
33 dB
43 dB
48 dB
Relative attenuation
arel
f_C
... ^fC ^{± 7,05 MHz}
f_C ± 7,05 MHz ... f_C ± 7,2 MHz
f_C + 7,6
f_C + 7,9
f_C + 8,5
f_C +11
f_C - 22,9
f_C - 14
f_C - 13
f_C - 8,5
f_C - 7,8
f_C ±22,9
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
... f_C +
... f_C +
... f_C +
... f_C +
... f_C -
... f_C -
... f_C -
... f_C -
... f_C -
... f_C ±
7,9
8,5
11
22,9
14
13
8,5
7,8
7,6
95
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Group delay ( mean value in PB )
Group delay ripple in PB:
-
1,1 dB
-
-
15,186 MHz
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2,9 µs
150
ns
f_C ± 7,1
max. 1,5
MHz
dB
min. 14,1
min. 14,4
max. 15,2
max. 15,3
max. 17
MHz
MHz
MHz
MHz
MHz
max. 1,5 dB
max. 3
dB
min. 33
dB
min. 43
dB
min. 42
dB
min. 48
dB
min. 48
dB
min. 46
dB
min. 48
dB
min. 43
dB
min. 33
dB
min. 50
dB
max. 4
µs
max. 200
ns
Temperature coefficient of frequency
Tc_f
Frequency deviation of fc over temperature
Operating temperature range
Storage temperature range
- 87
ppm/K
-
∆fc(Hz) = Tc_f(ppm/K) x (T - T_A) x f_CTA (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:
checked / approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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of their use or application. No rights under any patent accompany the sale of any such product(s) or information.