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參數(shù)資料
| 型號： | TFS912 |
| 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, 912.5 MHz, SAW FILTER |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 134K |
| 代理商： | TFS912 |
Tfs912.doc
VI
TELEFILTER
version 1.2
02.07.2002
Filter Specification
TFS 912
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances*
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 912 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 nominal frequency fN is fixed at 912,5 MHz without tolerance. The given
values for the relative attenuation arel and for the group delay ripple 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
23
0
°
C
dBm
for input:
for output:
190
// -0.15 pF
190
// -0.15 pF
typ. value
tolerance/limit
Insertion loss
(Reference level)
ae = amin
3,85
dB
max.
5,0
dB
Nominal frequency
fN
-
912,5
MHz
Centre frequency
fc
912,5
MHz
2 dB Bandwidth
BW
54,3
MHz
-
3 dB Bandwidth
BW
57,7
MHz
min.
45,0
MHz
Pass band ripple
within
±
22,5 MHz
1.8
dB
max.
3,0
dB
Relative attenuation
f
N
– 117,5 MHz .... f
N
– 812,5 MHz 47,0
f
N
+ 117,5 MHz .... f
N
+ 257,5 MHz 50,0
f
N
+ 257,5 MHz .... f
N
+ 302,5 MHz 50,0
f
N
+ 302,5 MHz .... f
N
+ 587,5 MHz 50,0
arel
dB
dB
dB
dB
min.
min.
min.
min.
40,0
30,0
45,0
40,0
dB
dB
dB
dB
Operating temperature range
-
- 25
°
C ... + 75
°
C
Storage temperature range
-
- 30 °C ... + 80 °C
Temperature Coefficient
*) 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.
TC
- 72 ppm / K
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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| TFS912_05 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
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