LA7851 Sanyo Semiconductor Corporation, LA7851 Datasheet

LA7851

Manufacturer Part Number

LA7851

Description

CTR display synchronization deflection circuit

Manufacturer

Sanyo Semiconductor Corporation

Datasheet

1.LA7851.pdf (4 pages)

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Ordering number : EN1775B

LA7851

Overview

Features

On-Chip Functions

[Horizontal Block]

The LA7851 is a sync deflection circuit IC dedicated to CRT display use. It can be connected to the LA7832, 7833 (for

vertical output use) to form a sync deflection circuit that meets every requirement for CRT display use.

So far, ICs for color TV use have been applied to the sync deflection circuit for CRT display use and general-purpose ICs

such as one-shot multivibrator, inverter and a lot of transistors have been used to form the peripherals such as sync input

interface, horizontal phase shifter. The LA7851 contains these peripherals on chip, has a wide vertical pull-in range of

20Hz, and adopts a stable circuit for horizontal oscillation from 15kHz to 100kHz aiming at improving the characteristics

required for CRT display use.

• The vertical pull-in range 20Hz permits non-adjusting at vertical sync 50Hz/60Hz.

• The horizontal oscillation frequency can be adjusted stably from 15kHz to 100kHz.

• The horizontal display can be shifted right/left.

• The horizontal/vertical sync input can be used intact regardless of the difference in pulse polarity and pulse width.

• The AFC feedback sawtooth wave can be obtained by simply applying a flyback pulse to the IC as a trigger pulse.

• Any duty of the horizontal pulse can be set.

• Good linearity because DC bias at vertical output stage is subject to sampling control within retrace time.

• AFC

• Horizontal OSC

• X-ray protector

• Horizontal phase shift

• AFC sawtooth wave generator

• Horizontal pulse duty setting

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

Monolithic Linear IC

CRT Display Synchronization

Deflection Circuit

[Vertical Block]

• Vertical OSC

• Vertical sawtooth wave generator

• Sampling type DC voltage control

52808 MS JK/O2500TN (KT)/N218TA/4015MW/6114KI, TS No.1775-1/4

s products or

Related parts for LA7851

LA7851 Summary of contents

Page 1

... LA7851 Overview The LA7851 is a sync deflection circuit IC dedicated to CRT display use. It can be connected to the LA7832, 7833 (for vertical output use) to form a sync deflection circuit that meets every requirement for CRT display use. So far, ICs for color TV use have been applied to the sync deflection circuit for CRT display use and general-purpose ICs such as one-shot multivibrator, inverter and a lot of transistors have been used to form the peripherals such as sync input interface, horizontal phase shifter ...

Page 2

... AFC phase comparison center time Increased/reduced voltage characteristic of AFC phase comparison center time Temperature characteristic of AFC phase comparison center time Comparison waveform generating input operation voltage pin 13 voltage at hold-down operation start LA7851 Symbol Conditions max Ta ≤ 65°C Pd max Topr Tstg Symbol ...

Page 3

... Package Dimensions unit : mm (typ) 3021C Block Diagram LA7851 1000 800 780 600 400 200 0 - Ambient Temperature °C Pd max -- Ta 520 100 No. 1775-3/4 ...

Page 4

... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of May, 2008. Specifications and information herein are subject to change without notice. LA7851 :14”Color Monitor 60Hz 15.734kHz vertical drive 1 ...

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