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參數(shù)資料
| 型號(hào)： | TFS70H22 |
| 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(shù)： | 1/5頁 |
| 文件大小： | 59K |
| 代理商： | TFS70H22 |
tfs70H22.doc
VI TELEFILTER
Version 1.1
TFS 70H22
04.03.2002
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 70H22
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
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
25
0
for input:
for output:
°C.
dBm.
180
- 17,6 pF.
240
- 13,7 pF.
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
17
dB
max. 24
dB
Centre frequency
fc
at ambient temperature
(f
CTA
)
70,0 MHz
70,0 ± 0,05 MHz
Pass band :
PB
fc ... fc ± 155
max.
kHz
Amplitude ripple in :
fc - 155 kHz ... fc + 155 kHz
-
1
dB
Bandwidth ( BW ) :
at ambient temperature T
A
1 dB
3 dB
350
595
kHz
min. 310
min. 500
kHz
kHz
10 dB
20 dB
40 dB
50 dB
1020
1360
1735
1880
kHz
kHz
kHz
kHz
max. 1900
kHz
Relative attenuation
arel
fc - 155 kHz ..... fc + 155 kHz
fc ± 155 kHz ..... fc ± 250 kHz
fc ± 950 kHz ..... fc ±
fc ±
3 MHz ..... fc ±
fc ±
9 kHz ..... fc ±
-
-
max.
max.
1
3
dB
dB
3 MHz
9 MHz
30 MHz
55
55
65
dB
dB
dB
min.
min.
min.
40
45
50
dB
dB
dB
Group delay ( mean value in PB ):
Group delay ripple in
Deviation from linear phase in PB :
2,8 μs
100
1,4 °
max. 300
max.
ns
fc ... fc ± 250 kHz
:
ns
3 °
Triple transit attenuation compared to main signal
Crosstalk
48
55
dB
dB
Frequency inversion temperature ( T
o
) :
Temperature coefficient of frequency ( Tc
f
) :
Frequency deviation of fc over temperature:
** )
Operating temperature range
Storage temperature range
30°C...35°C
-0,036
fc(Hz) = Tc
f
(ppm/K) x (T - T
o
)2 x f
To
(MHz)
ppm/K2
- 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.
**)
f
To
is reference frequence fc at frequency inversion temperature (T
o
)
Generated:
Checked/Approved:
W. Dunzow
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
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail:
vti@vtinh.com
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