Design and application of OM8361/TDA8362 single-chip microcomputer OM8361/TDA8362 is a single-chip integrated circuit developed by Philips to complete the processing of all small signals. OM8361/TDA8362 has a high degree of integration and can complete the processing of small signals such as intermediate frequency video chrominance and line field scanning. It has a PAL/NTSC automatic identification color decoding circuit. If an external TDA8395 is connected, SECAM decoding can be easily realized. The integrated block is connected to a line of baseband delay processing dedicated chip TDA4665 that does not require adjustment. Because the color decoding adopts the current popular PAL-S color decoding method, the color brightness and vividness of PAL images have been greatly improved. The block also integrates chroma notch filter, color bandpass filter, brightness delay line, etc., which reduces the number of peripheral adjustable components and facilitates production and maintenance.
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