NJM2210 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM2210

VIDEO NOISE REDUCER

Japan Radio Corporation  

NJM2210

■ APPLICATION NOTE

The NJM2210 is an integrated circuit of composing variable comb type filter which reduces noise mixed at chroma or

luminance signal of VCR camera or others. Time delay element of comb type filter is fit to CCD delay element, not to

glass delay line. The circuit is the most excellent FB with NULL system. Fig.1 is its basic block diagram and Fig.2 is actual

block diagram of NJM2210.

Fig.3 is one of application examples.

This video noise reducer is composed of NJM2210, three capacitances for combination, one capacitance for signal

bypass and CCD delay elements.The NJM2210 is applicable to both of chroma and luminous signal with each fitted

CCD delay element. The control terminal for switching reduce and enhance operates as enhance (increasing of high

frequency part) with high level input and reduce (decreasing of high frequency part) with low level input. Its threshold level

is about 2.25V at 5V supply voltage. Fig.4 is basic operating characteristics.

Fig.1 Basic Block Diagram

Fig.2 Block Diagram

Fig.3 Application

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Fig.4 Basic Operating Characteristic

Ver.2004-02-17

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