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TFS246H SAW filter specification
型号:   TFS246H
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描述:   SAW filter specification
文件大小 :   52 K    4 页
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品牌   VECTRON [ Vectron International, Inc ]
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tfs246h.eng
version1.1
06.01.02
______________________________________________________________________________________________________
TELE FILTER tft GmbH
Measurement condition
Ambient temperature:
Input power level:
Source impedance:
Load impedance:
Ext coil:
Construction
see page 2
Characteristics
Remark:
SAW filter specification
TFS 246 H
1/4
______________________________________________________________________________________________________
23
°C
0 dBm
490
|| -2.62 pF (± 10%)
490
|| -2.62 pF (± 10%)
82 nH
Reference level for the relative attenuation arel of the TFS 246 H 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 fo 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 on 246 H 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 also if the centre frequency fo 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 fo.
Data
typ. value
tolerance / limit
______________________________________________________________________________________________________
2,5
dB
max 5
dB
ae = amin
Insertion loss
(Reference level)
______________________________________________________________________________________________________
-
246,000 MHz
fN
Nominal frequency
______________________________________________________________________________________________________
Pass band ripple
fN - 85 kHz ... fN + 93 kHz
-
max 1,5
dB
______________________________________________________________________________________________________
Relative attenuation
arel
246,0 MHz ± 120
kHz
1,5
dB
max
3
dB
246,0 MHz ± 330
kHz ... 246,0 MHz ± 400
kHz
22
dB
min 18
dB
246,0 MHz ± 400
kHz ... 246,0 MHz ± 600
kHz
33
dB
min 25
dB
246,0 MHz ± 600
kHz ... 246,0 MHz ± 800
MHz
50
dB
min 40
dB
246,0 MHz ± 800
kHz ... 246,0 MHz ± 1,6 MHz
55
dB
min 45
dB
246,0 MHz ± 1,6 MHz ... 246,0 MHz ± 3,0 MHz
55
dB
min 45
dB
246,0 MHz ± 3,0 MHz ... 246,0 MHz ± 20
MHz
55
dB
min 46
dB
246,0 MHz ± 20
MHz ...246,0 MHz ± 100
MHz
55
dB
min 45
dB
______________________________________________________________________________________________________
GDD
Group delay distortion
246,0 MHz ± 50
kHz
0,5
µs
max 1,2
µs
246,0 MHz ± 70
kHz
0,8
µs
max 1,5
µs
246,0 MHz ± 100
kHz
1,2
µs
max 2,5
µs
______________________________________________________________________________________________________
Operating temperature range
- 20
°C
... + 70
°C
Storage temperature range
- 30
°C
... + 85
°C
______________________________________________________________________________________________________
- 0,036 ppm/K²
-
Temperature coefficient of frequency
TCf
______________________________________________________________________________________________________
Frequency inversion temperature
+ 25
°C
______________________________________________________________________________________________________
Generated:
Checked / approved:
______________________________________________________________________________________________________
VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: tft@telefilter.com
E-Mail: vti@vtinh.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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