TDA18252HN/C1,557

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Linear video processing has been improving in strides over the last few decades, and the industry is catching up with the demand for high resolution, motion-sensitive videos. As an innovation in this field, TDA18252HN/C1,557 is an integrated multimedia comb filter for PAL and NTSC analog applications that provides very sharp picture clarity. With its ultra fine resolution, the immensely improved picture quality is unmatched in the industry today.

The TDA18252HN/C1,557 comb filter has a selection of video decilation filters and also offers a choice between PAL 50Hz and NTSC 60Hz. The filter applies a very high quality 6-pole low and high pass channel selection filter with fast response time and highly accurate color correction to eliminate color smear and cross-color (NTSC). Furthermore, the integrated NTSC/PAL decoder eliminates the need for external switching, thereby creating an efficient and inexpensive design. The comb filter also provides automatic gain control, a NTSC auto peak detection, and an NTSC 3.58 video output.

The TDA18252HN/C1,557 also offers a simple and effective way of choosing the desired filter setting. It includes a STAC-LK input, which can be linked to the voltage generated by a microprocessor, with the filter being activated when the voltage transitions from 0V to 5V. The benefit of this is that it allows for a more precise selection of the filter coefficient and can easily be adapted to different applications.

Regarding its working principle, the TDA18252HN/C1,557 applies two very precise filters on the two narrow channels of the input signal. Each filter contains three high-pass, two low-pass and one band-pass sections. These sections are designed to separate luminance (Y) and chrominance (C) on PAL and NTSC systems. In addition, the integrated NTSC/PAL decoder eliminates the need for external switching, providing a faster response time and improved resolution.

In the case of NTSC systems, the 2x comb filter is used to further separate the chrominance signal from the luminance signal. This improves the signal-to-noise ratio and reduces color noise. In addition, it also reduces the amount of cross-color and provides improved color signal accuracy. In the case of PAL systems, a 4x comb filter is used for the same purpose. The comb filter also employs an adaptive peak detection and correction algorithm which eliminates signal interference and reduces color noise.

The TDA18252HN/C1,557 linear video processor has the ability to detect low-level signals in the presence of strong DC signals. This ensures improved signal accuracy and clear picture with minimized artifacts. Furthermore, the adaptive peak detection algorithm means that the system can rapidly detect any changes in signal interference, allowing for improved signal accuracy and improved picture quality.

Overall, the TDA18252HN/C1,557 is an incredibly powerful linear video processing system that can be used in many different applications, ranging from broadcasting to video games. Its high-precision filters ensure a sharp and accurate picture, while its adaptive peak detection algorithm limits interference and improves signal accuracy. This makes it an ideal solution for any application that requires high-quality video processing.

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