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參數(shù)資料
| 型號(hào)： | 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(jī)/VCR應(yīng)用的IF信號(hào)處理（自動(dòng)調(diào)整控制 鎖相環(huán) VIF+SIF）電路) |
| 中文描述： | 中頻信號(hào)處理電路（2葷鎖相環(huán)資料表格應(yīng)力強(qiáng)度因子）的電視和錄像機(jī)（用于電視機(jī)/錄像機(jī)應(yīng)用的中頻信號(hào)處理（自動(dòng)調(diào)整控制鎖相環(huán)資料表格強(qiáng)度因子）電路） |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 200K |
| 代理商： | LA7583 |
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Equivalent Circuit Block Diagram
Multinetwork PLL (Automatic Adjustment Control)
The LA7583’s PIF detector uses a multinetwork PLL and a buzz canceller. The multinetwork PLL is a PLL detector that was
developed in order to eliminate the need for adjustments in video detection.
This PLL detector offers the following features:
(1) Eliminates the need for adjustments in video detection.
(2) The PLL detection characteristics are unaltered.
a. Offers better waveform response characteristics in comparison with the quasi-synchronous detection method.
b. The harmonic wave component of the video signal (demodulated output) is reduced.
c. The 1/2 IF signal suppression ratio is improved.
(3) Audio buzz is greatly reduced by the buzz canceller.
A typical PLL detector consists of the blocks shown below.
In these blocks, if the VCO coil is not adjusted to the IF frequency, a phase difference will appear in the control loop. As a result,
the PLL detector detection axis will shift from the ideal 180°. The group delay, DP characteristics, etc., deteriorate as a result.
LA7583
No.5177-5/16
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相關(guān)代理商/技術(shù)參數(shù) |
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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 |
| LA7600 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA7601 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| 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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