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參數資料
| 型號： | TFS70U |
| 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, 70 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大小： | 51K |
| 代理商： | TFS70U |
Tfs70U.doc
VI TELEFILTER
Version 2.0
14.02.2001
Filter Specification
TFS 70U - 1/5
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
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.com
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances in fc:
23
0
for input:
for output:
°C.
dBm.
50
0 pF.
50
0 pF.
2. Characteristics
Remark:
Reference level for the relative attenuation arel of the
TFD 70U
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 reference frequency fc is the arithmetic mean value of the upper and lower frequencies at
the
20 dB
filter attenuation level relative to the insertion loss
ae
. The temperature coefficient of frequency
Tc
f
is valid both for the reference
frequency
fc
and the frequency response of the filter in the operating temperature range. The frequency shift of the filter in the operating temperature
range is not included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
20,5
dB
max.
22
dB
Centre frequency
fc
at ambient temperature
(f
CTA
)
70
MHz
70 ± 0,15
MHz
Pass band ( PB ) :
fc ... fc ± 5,6 MHz
max.
1
Amplitude ripple in PB (p-p):
0,3
dB
dB
Bandwidth :
at ambient temperature T
A
1 dB - band width
3 dB - band width
11,96
13,67
MHz
MHz
min.
min.
11,2
13,0
MHz
MHz
20 dB - band width
40 dB - band width
18,00
20,15
MHz
MHz
max.
22
MHz
Relative attenuation
arel
fc
5,6
...... fc ±
MHz ... fc ±
MHz ... fc ± 30
MHz ... fc -
MHz ... fc + 70
5,6
6,5
MHz
MHz
-
-
max.
max.
1
3
dB
dB
fc ±
fc ± 11
fc - 70
fc + 30
MHz
MHz
MHz
47...55 dB
47...55 dB
37...39 dB
min.
min.
min.
40
40
35
dB
dB
dB
30
Group delay ( mean value in PB ):
Group delay ripple in :
Deviation from linear phase in :
0,720 μs
20
2,5° (r.m.s. 0,6 °)
max.
max.
1
μs
ns
fc ... fc ± 7,5 MHz
fc ... fc ± 7,5 MHz
ns
30
Triple transit attenuation compared to main signal
Crosstalk
50...52 dB
60...70 dB
Temperature coefficient of frequency ( Tc
f
) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
- 72
ppm/K
fc(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CTA
(MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
Generated: Wadim Dunzow
Checked/Approved: Dr. Bert Wall
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