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參數(shù)資料
| 型號(hào)： | LA7577N |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Super-Split，PLL-II VIF and SIF IF Signal Processor for TV/VCRs(用于電視機(jī)/VCR應(yīng)用的IF信號(hào)處理（鎖相環(huán)II VIF+SIF）電路) |
| 中文描述： | 超斯普利特，鎖相環(huán)-Ⅱ資料表格及SIF中頻信號(hào)處理器的電視/錄像機(jī)（用于電視機(jī)/錄像機(jī)應(yīng)用的中頻信號(hào)處理（鎖相環(huán)二資料表格強(qiáng)度因子）電路） |
| 文件頁(yè)數(shù)： | 14/16頁(yè) |
| 文件大?。?/td> | 439K |
| 代理商： | LA7577N |
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LA7577N
No. 4037—14/16
1st SIF Output (Pin 22)
The 1st SIF output is an emitter follower with internal
100
series resistor as shown in Figure 27. An additional
series resistor should be used for impedance matching to
the ceramic band-pass filter.
1st SIF AGC Filter (Pin 23)
The 1st SIF amplifier has an AGC range of approximately
30dB. The capacitor on pin 23 is normally 0.01
μ
F, but
may, depending on the situation, be as large as 4.7
μ
F
(4.7
μ
F is recommended when using the filter for NICAM
signal processing).
SIF Input (Pin 24)
The input impedance of the amplifier, shown in Figure 29,
is approximately 1k
. Any interference on pin 24, a video
signal for example, can cause audio buzz or heterodyning.
Good circuit board layout is essential. Examples of both
good and poor layout are shown in Figure 30.
Figure 27. 1st SIF output
Figure 28. 1st SIF AGC filter
Figure 29. SIF stage input circuit
Figure 30. PCB layout examples
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相關(guān)代理商/技術(shù)參數(shù) |
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| LA7578 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA7578N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal Processing (Super PLL-II VIF + SIF) Circuit for TVs and VCRs |
| LA7583 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal Processing Circuit (A2C PLL VIF + SIF) for TVs and VCRs |
| LA7590 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| LA7600 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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