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參數(shù)資料
| 型號： | TFS174D |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | 1 FUNCTIONS, 174.21 MHz, SAW FILTER |
| 封裝： | ROHS COMPLIANT PACKAGE-10 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 119K |
| 代理商： | TFS174D |
File:TFS174D.doc
version 1.4
21.12.2006
VI TELEFILTER
Filter Specification
TFS 174D
1/5
TELEFILTER 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
TA:
25 °C ± 2°C
Input power level:
0 dBm
Terminating impedances at fc: *
input:
490
-12,9 pF
output:
450
-11,9 pF.
Characteristics
Remark:
Reference level for the relative attenuation
arel of the TFS 174D 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 174,2 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
typ. value
tolerance / limit
Insertion loss
ae
6,3
dB
max.
8,0
dB
(reference level)
Nominal frequency
fN
-
174,2
MHz
Centre frequency
fC
174,21 MHz
-
Passband
PB
-
fN ±
67
kHz
Amplitude ripple in PB
p-p
0,10 dB
max.
0,25
dB
3
dB bandwidth
BW
750
kHz
min. 660
kHz
Relative attenuation
arel
fN
.......
fN ± 67
kHz
0,10 dB
max.
0,25
dB
fN ± 67
kHz .......
fN ± 125
kHz
0,10 dB
max.
1,00
dB
fN ± 125
kHz .......
fN ± 200
kHz
0,25 dB
max.
1,20
dB
fN ± 200
kHz .......
fN ± 330
kHz
2,6
dB
max.
3
dB
fN ± 469
kHz .......
fN ± 600
kHz
7
dB
min.
4
dB
fN ± 600
kHz .......
fN ± 860
kHz
18
dB
min.
11
dB
fN ± 860
kHz .......
fN ±
1,2
MHz
30
dB
min.
20
dB
fN ±
1,2
MHz .......
fN ±
6,0
MHz
46
dB
min.
40
dB
fN - 154,2 MHz ....... fN -
6,0
MHz
60
dB
min.
50
dB
fN +
6,0
MHz .......
fN + 225,8 MHz
60
dB
min.
50
dB
Absolute group delay in f
N ± 200
kHz
2,11 s
max.
2,6
s
Group delay variation in f
N ± 200 kHz
100
ns
max. 260
ns
Input power level
-
max.
22
dBm ***)
Return loss in PB
18
dB
min.
10
dB
Operating temperature range
-
-5 °C ... + 85°C
Storage temperature range
-
- 40 °C ... + 85 °C
Frequency inversion temperature T
0
+ 40
°C
-
Temperature coefficient of frequency Tcf **
- 0,04 ppm/K
-
*) 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) x (T-T0) x fTo(MHz).
***) This power level is allowed for short term operation only. The max. input power for continuous operation is max. 15 dBm only.
Generated:
Checked / Approved:
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