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參數資料
| 型號： | TFS70H35 |
| 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： | 146K |
| 代理商： | TFS70H35 |
File name: Tfs70H35.doc
VI TELEFILTER
Version 1.0
TFS 70H35
23.07.2002
1/5
Filter specification
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances in fc * ) :
2. Characteristics :
Remark:
Reference level for the relative attenuation
arel
of the
TFS 70H35
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
23
0
for input:
for output:
°C.
dBm.
450
- 26,3 pF
450
- 29,3 pF
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
23,5 dB
max.
25
dB
Centre frequency
fc
at ambient temperature
(f
CTA
)
70,0 MHz
70,00 ± 0,10 MHz
Pass band ( PB ) :
fc ... fc ± 3,0
max.
MHz
Amplitude ripple in :
fc –2,8 MHz ... fc + 2,8 MHz
0,5 dB
1
dB
Bandwidth ( BW ) :
1
dB
3
dB
at ambient temperature T
A
5,85 MHz
6,31 MHz
min.
min.
5,6 MHz
6
MHz
20
45
50
dB
dB
dB
7,0 MHz
8,0 MHz
8,2 MHz
max.
8,4 MHz
Relative attenuation
fc ± 2,8
fc ± 4,2
fc ± 8
arel
fc ... fc ±..2,8 MHz
MHz ... fc ± 3
MHz ... fc ± 8
MHz ... fc ± 40
-
-
max.
max.
1
3
dB
dB
MHz
MHz
MHz
55
dB
dB
min.
min.
45
50
dB
dB
65...70
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB (p-p) :
3,0 μs
max.
max.
ns
80...100
2,7 ° ( r.m.s. 0,6° )
ns
130
6°
Triple transit attenuation compared to main signal
Crosstalk
47
65
dB
dB
Temperature coefficient of frequency ( Tc
f
) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
- 75
ppm/K
fc(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CTA
(MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
*) 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.
Generated:
W. Dunzow
Checked / approved:
Dr. Bert Wall
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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