- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382583 > TFS224A (VECTRON INTERNATIONAL) VI SAW濾波器(VI SAW Filter) PDF資料下載
參數(shù)資料
| 型號： | TFS224A |
| 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, 224.88 MHz, SAW FILTER |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 38K |
| 代理商： | TFS224A |
file: A-224A-V2.doc
VI
TELEFILTER
Ltp:tft031
1. General
The filter is driven in an unbalanced way. It is matched to
50
The matching element values given below are theoretical calculations based on measured values for
termination impedance of test fixture (Q-value of matching elements is equal 30 ), given in the
specification and S-parameters of the filters on PCB. If there are parasitics on the customer PCB, the
matching elements have to be optimised regarding the circuit and PCB design.
We have tested on the PCB (tft031) two different versions of matching network (scheme 1 and scheme 2).
2. Theoretical matching
The unbalanced driven source and load termination impedances based on measured values of test fixture
(Q-value of matching elements is equal 30 ), given in the specification of the filter for Scheme 1 are :
Frequency
Source termination impedance [
Z
in
]
224,88 MHz
1000
- 5,0 pF
≡
19,60
+ j 138,75
2.1 Scheme 1.
The values of the matching elements, which are given below, are calculated from the source and load
impedance on test fixture for different Q-value of the matching elements.
The calculation was made without consideration of parasitics.
Input = Output (theor.)
Termination impedance
Z
in
= Z
out
,
Application Note
TFS 224A - 1 / 4
version 2.0
01.11.00
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
Load termination impedance [
Z
out
]
1000
- 5,0 pF
≡
19,60
+ j 138,75
[ if Q =
∞
]
R
p
[
]
C
p
[ pF ]
1400
- 5,30 pF
1305
- 5,26 pF
1000
- 5,00 pF
ILo
[dB]
7,2..8,5
6...6,5
5...5,5
Q-value
30
100
∞
C
1
=
C
2
[pF]
24,2
23
17,6
L
1
=
L
2
[nH]
109
110
115
The values of the matching elements, which are given below, are calculated with consideration of the
different Q-values of the matching elements and based on measured S-parameters of the filter TFS 224A.
We shall not take over any guarantee for achieving the typical and limit values of the specification
parameters as long as termination impedance differs from the stated above.
Based on measured S-parameters we calculated the following theoretical matching components
Q-value
C
1
=
C
2
[pF]
L
1
=
L
2
[nH]
Termination impedance
Z
in
= Z
out
,
∞
24,2
±
2
109
±
2
1400
±
200
- 5,30
±
0,20 pF
∞
24,2 pF
±
8%
109 nH
±
2%
1400
±
14% - 5,30 pF
±
4%
∞
24,2
109
100
24,2
109
30
24,2
109
ILo [dB]
4,5...5,0
4,5...5,0
4,5...5,0
6,0...6,5
7,5...8,5
1400
- 5,30 pF
1300
- 5,30 pF
1200
- 5,30 pF
L
1
1 2 3
6
5
4
10
11
12
9 8 7
C
1
C
2
L
2
Scheme 1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TFS225A | VI SAW濾波器(VI SAW Filter) |
| TFS225B | VI SAW濾波器(VI SAW Filter) |
| TFS225 | VI SAW濾波器(VI SAW Filter) |
| TFS228 | VI SAW濾波器(VI SAW Filter) |
| TFS246D | VI SAW濾波器(VI SAW Filter) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TFS224C | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS225 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:VI TELE FILTER |
| TFS225A | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
| TFS225E | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS228 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。