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參數(shù)資料
| 型號： | LA7583 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | IF Signal Processing Circuit (A 2 C PLL VIF + SIF) for TVs and VCRs(用于電視機/VCR應(yīng)用的IF信號處理（自動調(diào)整控制 鎖相環(huán) VIF+SIF）電路) |
| 中文描述： | 中頻信號處理電路（2葷鎖相環(huán)資料表格應(yīng)力強度因子）的電視和錄像機（用于電視機/錄像機應(yīng)用的中頻信號處理（自動調(diào)整控制鎖相環(huán)資料表格強度因子）電路） |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 200K |
| 代理商： | LA7583 |
Notes on Sanyo SAW Filters
There are two types of filters, depending on the piezoelectric substrate material.
(1) LiTaO
3
(lithium tantalate) SAW filters: .......TSF1xxx
TSF2xxx
While the LiTaO
3
SAW filters offer excellent stability with a low temperature coefficient of –18 ppm/°C, the insertion
loss is high. However, by using a coil, etc., to obtain proper matching on the SAW filter output side (which does increase
the number of external components), it is possible to suppress the insertion loss while at the same time making the level
of the characteristics variable, which provides additional design freedom. (Refer to Fig. 13.) In addition, because the SAW
(surface wave) reflection is small, ripple within the band can be kept low.
(2) LiNbO
3
(lithium niobate) SAW filter: ......TSF5xxx
While the LiNbO
3
SAW filter has a high temperature coefficient of –72 ppm/°C, it has a lower insertion loss by about 10
dB compared to the LiTaO
3
SAW filters. Therefore, matching on the output side of the SAW filter is not necessary. (Refer
to the diagram below.) In addition, because the insertion loss is low (although the ripple within the band is somewhat
higher than in the case of the LiTaO
3
SAW filter), the low impedance and small feedthrough diminish the effects of
peripheral circuit components and the pattern layout, and make it possible to stabilize the trap characteristics outside of
the band.
From the above, it is clear that the LiTaO
3
SAW filter is suitable for Japan and U.S. bands where the IF frequency is
high, while the LiNbO
3
SAW filter is suitable for PAL and U.S. bands where the IF frequency is low.
(a) Picture wide BAND SAW Filter
Japan
TSF1137U
U.S.
TSF1241U(with IS-31 Trap)
(b) INTER Carrier SAW Filter
Japan
U.S.
TSF1138P
TSF1220P
LiTaO
3
SAW Filter
LiNbO
3
SAW Filter
LA7583
No.5177-14/16
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| LA7590 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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| LA7601W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| LA7605 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述: |
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