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參數(shù)資料
| 型號： | TFS215A |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | 1 FUNCTIONS, 215.015 MHz, SAW FILTER |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 215K |
| 代理商： | TFS215A |
Filename: tfs 215a.doc
Version 1.3
26.02.2007
VI TELEFILTER
Filter specification
TFS 215A
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
Measurement condition
Ambient temperature:
23
°C
Input power level:
0
dBm
Terminating impedance: *
Input:
530 || -3,28 pF
Output:
530 || -2,58 pF
External Coil:
82 nH
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 215A 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 215 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved 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
typ. value
tolerance / limit
Insertion loss
ae
3,4
dB
max.
5
dB
(reference level)
Nominal frequency
fN
215,0
MHz
Centre frequency
fC
215,015
MHz
-
Passband
PB
fN
± 75,0
kHz
Pass band ripple
0,4
dB
max.
2
dB
Bandwidth
BW
2
dB
280
kHz
min.
150
kHz
Relative attenuation
arel
fN
… fN ±
100
kHz
0,5
dB
max.
3
dB
fN ±
400
kHz
… fN ±
600
kHz
45
dB
min.
25
dB
fN ±
600
kHz
… fN ±
800
kHz
45
dB
min.
35
dB
fN ±
800
kHz
… fN ±
1,6
MHz
51
dB
min.
40
dB
fN ±
1,6
MHz … fN ±
3,0
MHz
52
dB
min.
45
dB
fN ±
3,0
MHz … fN ±
30,0
MHz
55
dB
min.
53
dB
Group delay ripple within PB
0,7
s
max.
1,2
s
Operating temperature range
OTR
-
- 30 °C ... + 85°C
Storage temperature range
-
- 40 °C ... + 85°C
Frequency inversion temperature
+25
°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
2) x (T-T0)2 x fTo(MHz)
Generated:
Checked / Approved:
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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