參數(shù)資料
型號: TFS471
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, 471.55 MHz, SAW FILTER
文件頁數(shù): 1/3頁
文件大小: 35K
代理商: TFS471
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / 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.
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.com
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance:
23
°
C
0 dBm
310
|| -1,1 pF
Construction and pin connection
see page 2
50
test circuit
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 471 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 fo is the arithmetic mean value of the upper and lower
frequencies at the 3dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 471,55 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 also if the centre
frequency fo 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 fo
D a t a
______________________________________________________________________________________________________
Insertion loss
ae = amax
(Reference level)
______________________________________________________________________________________________________
Nominal frequency
_________________________________________________________-
Centre frequency
______________________________________________________471,55 MHz
3 dB - bandwidth
______________________________________________________________________________________________________
Usable signal bandwidth
______________________________________________________________________________________________________
Relative attenuation
arel
f
+ 910 kHz
______________________________________________________________________________________________________
Temperature coefficient of frequency
______________________________________________________________________________________________________
Frequency inversion temperature
______________________________________________________________________________________________________
Operating temperature range
______________________________________________________________________________________________________
typ. value
Variation/ Limitation
3,5
dB
max.
5
dB
471,55 MHz
-
280
kHz
-
-
min. f
±
10 kHz
min.
52
dB
-0,036 ppm/K
2
-
+ 25 °C
- 20°C ... + 70°C
Generated:
Checked / approved:
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