LA76810 Просмотр технического описания (PDF) - SANYO -> Panasonic
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LA76810
SANYO -> Panasonic
LA76810 Datasheet PDF : 3 Pages
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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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