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參數(shù)資料

型號(hào)：	LA7583
元件分類：	接收器
英文描述：	AUDIO/VIDEO DEMODULATOR, PDIP24
封裝：	SDIP-24
文件頁(yè)數(shù)：	12/16頁(yè)
文件大小：	201K
代理商：	LA7583

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)	參數(shù)描述
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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