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參數資料
| 型號： | TFS378 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | VI SAW濾波器(VI SAW Filter) |
| 中文描述： | 1 FUNCTIONS, 378 MHz, SAW FILTER |
| 文件頁數： | 1/2頁 |
| 文件大小： | 17K |
| 代理商： | TFS378 |
File: A-378-1.doc
VI TELEFILTER
Ltp: tft025
version 1.1
12.05.2000.
Application Note
TFS 378 -
1
/2
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / 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
Phone: (603) 598-0070 Fax: (603) 598-0075
e-mail: vti@vtinh.com
1. General
The filter is balanced driven. It is matched to 50
There are only theoretical values for matching elements available yet. We will start to prepare
a PCB for a matched sample immediately. The value of external coil connected to pin3 of the
filter is a measured value from our fixture.
2. Theoretical matching
The balanced driven source and load impedances of the filter are:
Source impedance:
250
|| -2 pF
Load impedance:
250
|| -2 pF
External Coil:
90 nH
The values of the matching elements, which are given below, are calculated from the source
and load impedance. If the values of the matching elements are not equal to standard values
the best standard values are given in brackets.
1
LB-IN
5
6
2
3,4,8
LB-OUT
SAW
C1
L1
C2
L4
L2
L5
L3
7
L1 = L2 = L3 = L4 = 21 nH
C1 = C2 = 1,37 pF
L5 = 90 nH
(22 nH)
(1,2pF)
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| TFS37 | Filter Specification |
| TFS380 | VI SAW濾波器(VI SAW Filter) |
| TFS38C | Filter specification |
| TFS390 | VI SAW濾波器(VI SAW Filter) |
| TFS400A | Filter specification |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TFS380A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFILTER |
| TFS380B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFILTER |
| TFS380C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VI TELEFILTER Filter specification |
| TFS380E | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
| TFS380G | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
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