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參數(shù)資料
| 型號： | TFS421A |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | 1 FUNCTIONS, 421 MHz, SAW FILTER |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 170K |
| 代理商： | TFS421A |
Filename: tfs 421a.doc
Version 1.0
25.10.2004
VI TELEFILTER
Filter specification
TFS 421A
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:
23
°C
Input power level:
0
dBm
Terminating impedance:
Input:
50
Output:
50
Characteristics
Remark:
The maximum of the pass band attenuation is defined as the insertion loss ae. The nominal frequency fN is fixed at 421 MHz without tolerance. The given
values for the absolute attenuation ae have to be reached at the frequencies given below even if the centre frequency fN is shifted due to the temperature
coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre frequency fN.
D a t a
typ. value
Variation/ Limitation
Insertion loss
ae
2,36
dB
max.
4,8
dB
Nominal frequency
fN
-
421
MHz
Passband
PB
9,11
MHz
fN ±
2,5
MHz
Absolute attenuation in OTR
fN - 420
MHz ....... fN -
12,5 MHz
55
dB
min.
43
dB
fN -
12,5 MHz ....... fN -
7,5 MHz
47
dB
min.
33
dB
fN +
20
MHz ....... fN + 735
MHz
62
dB
min.
40
dB
fN + 735
MHz ....... fN + 1235
MHz
40
dB
min.
30
dB
fN + 1235
MHz ....... fN + 1535
MHz
35
dB
min.
15
dB
Temperature coefficient of frequency
TCf*
- 32
ppm/K
-
Operating temperature range OTR
-10 °C ... + 85 °C
Storage temperature range
-30 °C ... + 85 °C
*)
fc(Hz) = Tcf(ppm/K) x (T - TA) x fC (MHz)
Generated:
Checked / Approved:
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