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File name LA76810 serie.pdf

PRODUCT INFORMATION Vol. 62 Single-Chip Color TV IC Series Developed IC product series provides support for both low cost and global products. LA76810 Series Overview As generation after generation of color TV signal-processing IC is developed, and as rationalization progresses in the design of these ICs, the companies that produce these ICs find themselves in a battle not just for market share, but for their very survival. TV manufacturers, who are facing the rapid collapse of prices in consumer products, now strongly desire both support for global products and reduced total costs in the ICs for these products. To respond to these needs, Sanyo has developed the LA76810 Series of single-chip color TV signal-processing ICs. To provide reduced design costs in application products, the LA76810 Series are designed to support end products with common printed circuit boards across the product line, and also to support global products by supporting a variety of TV standard combinations, including NTSC, PAL/NTSC, and multi-format. To reduce total costs, these ICs are based on the concept of reducing adjustments in external components by using an I2C bus, and furthermore aim at reducing the number of adjustments by adopting adjustment-free technology (e.g., the IF circuit is adjustment free), and by using circuit technologies (such as S-BPF/TRAP, DDS, and CCD) to reduce the number of components. Additionally, these products support end product differentiation by the adoption of unique technologies, such as built-in SG circuits, demodulation ratio and demodulation angle adjustment functions, and an AKB function. Features Global Product Support (Pin to Pin Structure) There are now three formats used for color TV broadcasts: PAL, NTSC, and SECAM. Since the signal processing required for these formats differs, it has been necessary to design printed circuit boards using different ICs for these different signal formats. However, since the LA76810 Series ICs are formed with a pin to pin structure as the pin arrangement, these products allow sharing of the printed circuit board circuit constants and layout, the items that make up the customer's design know-how. · LA76810: Multi-format support (PAL, NTSC, and SECAM) · LA76812: PAL and NTSC support SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division TOKYO OFFICE: Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 1 PRODUCT INFORMATION · LA76814: NTSC support Reductions in Total Costs · Number of external component adjustments reduced by the use of an I2C bus and by reducing the number of on-board rheostats. An I2C bus is used for controlling this IC, and this allows the number of adjustment points that require trimmers on the printed circuit board to be reduced. · Number of adjustments reduced by the adoption of adjustment-free technology. -- Adjustment-free IF (VCO and AFT circuits) The VCO coil adjustment and the AFT coil adjustment are now handled by adjus