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參數資料
| 型號： | TFS70H24A |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | 1 FUNCTIONS, 70 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大小： | 142K |
| 代理商： | TFS70H24A |
Filename: tfs 70h24a.doc
Version 1.1
26.08.2004
VI TELEFILTER
Filter specification
TFS 70H24A
1/5
Tele Filter GmbH
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.
Measurement condition
Ambient temperature:
25
°C
Input power level:
0
dBm
Terminating impedance: *
Input:
312 || -14,7 pF
Output:
424 || -12,7 pF
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 70H24A 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 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 Tcf is valid for both 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.
D a t a
typ. value
tolerance / limit
Insertion loss
ae
20
dB
max.
24
dB
(reference level)
Centre frequency
fC
70,01
MHz
70,0 ± 0,07 MHz
Passband
fC ± 0,50 MHz
Bandwidth
BW
1
dB
1,12
MHz
min.
0,9
MHz
3
dB
1,33
MHz
min.
1,0
MHz
40
dB
2,18
MHz
max.
2,3
MHz
Relative attenuation
arel
fC
… fC ±
0,40
MHz
0,4
dB
max.
0,7
dB
fC ±
0,40
MHz … fC ±
0,45
MHz
0,7
dB
max.
1
dB
fC ±
0,45
MHz … fC ±
0,50
MHz
1,8
dB
max.
3
dB
fC ±
1,15
MHz … fC ±
2,5
MHz
52
dB
min.
40
dB
fC ±
2,5
MHz … fC ±
30
MHz
60
dB
min
50
dB
Group delay
mean value in PB
3,63
s
max.
4
s
min.
3
s
Group delay ripple within PB
135
ns
max.
150
ns
Deviation from linear phase within PB
2,7
°
max.
4
°
Triple transit response suppression
48
dB
-
Crosstalk attenuation compared to main signal
50
dB
-
Operating temperature range
OTR
-
- 40 °C ... + 85°C
Storage temperature range
-
- 55 °C ... + 85°C
Frequency inversion temperature
30
°C
-
Temperature coefficient of frequency
TCf **
- 0,04
ppm/K
2
-
*) 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(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz).
Generated:
Checked / Approved:
Filter characteristic
66
66.8
67.6
68.4
69.2
70
70.8
71.6
72.4
73.2
74
-80
-72
-64
-56
-48
-40
-32
-24
-16
-8
0
frequency in MHz
m
a
gnit
ude
in
dB
69.25 69.4 69.55 69.7 69.85
70
70.15 70.3 70.45 70.6 70.75
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
frequency in MHz
m
a
gnit
ude
in
dB
69.25 69.4 69.55 69.7 69.85
70
70.15 70.3 70.45 70.6 70.75
3.48
3.57
3.66
3.75
3.84
3.93
4.02
4.11
4.2
4.29
4.38
frequency in MHz
delay
in
s
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