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參數(shù)資料
| 型號： | TFS38C |
| 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, 38.019 MHz, SAW FILTER |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 149K |
| 代理商： | TFS38C |
TFS 38C.doc
VI TELEFILTER
Version 1.1
TFS 38C
04.07.2002
1/5
Filter specification
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances at fc :
2.
Characteristics :
Remark: Reference level for the relative attenuation
arel
of the
TFS 38C
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
20 dB
filter attenuation level relative to the insertion loss
ae
. The nominal frequency
fN
is fixed on
38 MHz
without tolerance.
The temperature coefficient of frequency
Tc
f
is valid both for the reference frequency
fc
and the frequency response of the filter. All specified
parameters have to be reached in the operating temperature range (
OTR
) .
Data
Insertion loss
(Reference level)
ae
23
0
for input:
for output: 50
0 pF.
°C
dBm.
50
0 pF.
typ. value
22,5
tolerance / limit
max.
25 dB
dB
Nominal frequency : fN
at temperature T
O
= 30°C
38,000 MHz
38 MHz
Centre frequency fc
at ambient temperature T
A
= 23°C (
f
CAT
)
38,019 MHz
Pass band ( PB ) at OTR : 0°C ... 60°C :
f
N
- 2,48 MHz ... f
N
+ 2,48 MHz
Amplitude ripple in PB (p-p) :
0,15
dB
max.
0,4
dB
Bandwidth
0,5 dB
1 dB
3 dB
at ambient temperature T
A
(
f
CAT
)
:
5,78
6,01
6,47
MHz
MHz
MHz
min.
min.
5,14
6,18
MHz
MHz
10 dB
20 dB
30 dB
40 dB
Bandwidth
0,5 dB - band width
3 dB - band width
7,21
7,74
8,10
8,30
MHz
MHz
MHz
MHz
max.
MHz
8,32
at OTR : 0°C ... 60°C
:
5,60
6,29
MHz
MHz
min.
min.
4,96
6,00
MHz
MHz
30 dB - band width
Relative attenuation
f
N
± 2,48
8,28
MHz
max.
8,50
MHz
arel
f
N
..... f
N
±
MHz ... f
N
±
2,48 MHz
3,0 MHz
0,15
2
dB
dB
max.
max.
0,4
3
dB
dB
f
N
± 4,25
f
N
- 26
f
N
+ 6
f
N
+ 20
MHz ... f
N
±
MHz ... f
N
-
MHz ... f
N
+ 20
MHz ... f
N
+ 26
6
6
MHz
MHz
MHz
MHz
40
dB
dB
dB
dB
min.
min.
min.
min.
30
40
40
35
dB
dB
dB
dB
45...50
45...50
42...38
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB (p-p):
1,46
25
1,5
μs
ns
deg
max. 60
ns
Triple transit attenuation compared to main signal
Crosstalk
55
dB
dB
60...70
Temperature coefficient of frequency ( Tc
f
)
Frequency deviation of fc over temperature
Operating temperature ( OTR ) :
Storage temperature range
-75 ppm/K
fc(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CAT
(MHz)
0°C ... + 60 °C
- 25 °C ... + 85 °C
Generated:
Dunzow W.
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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