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| 型號(hào)： | TFS70H44 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類(lèi)： | 聲表面波濾波器 |
| 英文描述： | Filter Specification |
| 中文描述： | 1 FUNCTIONS, 70 MHz, SAW FILTER |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 126K |
| 代理商： | TFS70H44 |
File name: Tfs70H44.doc
VI TELEFILTER
version 1.2
TFS 70H44
30.07.2002
Filter Specification
1/5
Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances in fc *) :
Characteristics :
Remark:
Reference level for the relative attenuation
arel
of the
TFS 70H44
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
3 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 frequency shift of the filter in the
operating temperature range is not included in the production tolerance scheme.
Data
23
0
for input:
for output:
°C
dBm
486
- 10,2 pF
337
- 12,2 pF
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
fc
25
dB
max.
27,5 dB
Centre frequency
at ambient temperature
(f
CTA
)
70,0
MHz
70,0 ± 0,15 MHz
Pass band :
PB
fc
max.
± 12,8 MHz
Amplitude ripple in PB :
0,6
dB
1
dB
Bandwidth
at ambient temperature T
A
:
BW
1
3
dB
dB
27,25
28,97
MHz
MHz
min.
min.
25,6 MHz
28,0 MHz
10
20
40
dB
dB
dB
31,76
34,05
36,90
MHz
MHz
MHz
max.
37,7 MHz
Relative attenuation :
arel
fc
fc ± 12,8 MHz ... fc ± 14,0 MHz
fc ± 18,85 MHz ... fc ± 25
fc ± 25
MHz ... fc ± 60
... fc ± 12,8 MHz
-
-
max.
max.
1
3
dB
dB
MHz
MHz
47
53
dB
dB
min.
min.
40
45
dB
dB
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB :
0,90
38
5,8
μs
ns
°
max.
max.
ns
°
50
8
Triple transit attenuation compared to main signal
Crosstalk
56
60
dB
dB
Temperature coefficient of frequency ( Tc
f
) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
- 75
fc(Hz) = Tc
f
(ppm/K) x (T - T
o
) x f
CTA
(MHz)
ppm/K
- 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:
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
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
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