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參數資料
| 型號： | TFS448 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | Filter Specification |
| 中文描述： | 1 FUNCTIONS, 448.02 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大?。?/td> | 125K |
| 代理商： | TFS448 |
Filename: 448.doc
VI
TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances *
Input:
Output:
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS448 is the maximum of the pass band attenuation amax. The maximum of the
attenuation within the usable signal bandwidth 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 nominal frequency fN is fixed at 448,0125
MHz without tolerance. The given values for the relative attenuation have to be reached at the frequencies given below even if the centre
frequency fc 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 fc.
D a t a
version 1.1
16.05.2002
Filter Specification
TFS 448
1/5
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
598-0075
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.
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603)
23
°
C
0 dBm
340
|| -1,05 pF
340
|| -1,05 pF
typ. value
Variation / Limitation
Insertion loss
(Reference level)
ae = amax
-
max.
5
dB
Nominal frequency
f
N
-
448,0125 MHz
-
Centre frequency
f
c
448,02 MHz
3 dB - bandwidth
BW
255
kHz
-
Usable signal bandwidth
-
min. f
N
±
10
kHz
Relative attenuation
f
N
+ 910 kHz
arel
min.
60
dB
52
dB
Temperature coefficient of frequency
TC
f
**
-0,036 ppm/K
2
-
Frequency inversion temperature
T
0
+10
°C
-
Operating temperature range
-
- 10°C ... + 50°C
Storage temperature range
-
- 30°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.
**)
f(Hz) = TCf(ppm/K2) x (T-T
0
)2 x fTo(MHz)
generated:
checked / approved:
E-Mail:
vti@vtinh.com
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| TFS44E | Filter specification |
| TFS450 | Filter Specification |
| TFS453 | Filter specification |
| TFS454 | Filter specification |
| TFS455A1 | Filter specification |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TFS448B | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS44E | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS44M | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS44N | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS450 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
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