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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
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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 adjustment-free technology. · Number of external components reduced by the adoption of circuit technologies. -- S-TRAP, S-BPF The sound trap and sound bandpass filter circuits, which were previously implemented using external components, are now provided on chip. -- Horizontal oscillator element The horizontal oscillator element, which was previously an external component, is now provided on chip. -- Single crystal operation provided by DDS technology The functions of the two or three crystal oscillator elements previously required for color demodulation can now be handled by a single crystal oscillator element due to the adoption of DDS*1 technology. *1: DDS (direct digital synthesizer) technology allows multiple-frequency oscillations to be implemented with the precision provided by normal crystal oscillators with a single crystal element. -- Built-in CCD provided by multi-chip packaging (2 chips in a single package): LA76810 and LA76812 There is now demand for built-in delay lines (CCDs) in PAL system ICs. These products respond to this need by combining 2 chips in a single package: a bipolar chip, which focuses on analog processing, and a CMOS chip that provides the CCD functionality. Product Differentiation Provided by Unique Technologies · Production rationalization provided by an on-chip signal generator. -- These are the industry's first single-chip color TV ICs that include a built-in signal generator. This functionality was proposed by Sanyo to achieve rationalization in the TV manufacturing process. · End product differentiation provided by demodulation ratio and demodulation angle adjustment
SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division
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PRODUCT INFORMATION
function. -- This function was proposed by Sanyo for TV set color creation, in particular, as a means for correcting sample-to-sample variations in the color balance in TV tubes. · Manufacturing rationalization provided by an AKB function. -- The AKB function provided by these ICs allows easy adjustment of the white balance during manufacturing using a microcontroller.
Specifications
Type No. Function Single-chip signalprocessing IC Single-chip signalprocessing IC Single-chip signalprocessing IC Broadcast formats Multi Operating supply voltage 5.0 V ±0.3 V 9.0 V to 12.0 V 5.0 V ±0.3 V 9.0 V to 12.0 V 5.0 V ±0.3 V 9.0 V to 12.0 V Package Notes 2 chips: 1 package 2 chips: 1 package
LA76810
DIP54S
LA76812
PAL/NTSC
DIP54S
LA76814
NTSC
DIP54S
Sample Availability
Samples of the LA76810, LA76812, and LA76814 are available in October, November, and August 1998 each; production quantities will be anticipated in 1999.
JUNE 24, 1998
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
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